Abstract: A thin plate made of an Fe--Ni alloy for electronic parts, which has excellent softening property. The alloy consists essentially of, by weight, 32 to 40% Ni, not more than 0.1% Si, not more than 0.5% Mn and 5 to 50 ppm boron, and balance of Fe and unavoidable impurities. It comprises also trace elements which fulfill the following requirements: "S+O".ltoreq.150 ppm, Al.ltoreq.400 ppm, N.ltoreq.50 ppm, P.ltoreq.100 ppm, an element of IVa, Va and VIa Groups defined in the periodic table being not more than 2000 ppm in amount, and an atomic ratio of "B(atom. %)/N(atom. %)" being not less than 0.8, preferably more than 1.0. The invention also relates to a shadow mask made of the alloy and a cathode-ray tube comprising the shadow mask.

Abstract: A polycrystalline alloy is composed essentially of, by weight %: 15% to 30% Mo, 3% to 10% Al, up to 10% Cr, up to 10% Fe, up to 2% Si, 0.01% to 0.2% C, 0.01% to 0.04% B, balance Ni.

Abstract: Specific alloys, in particular Ni-based alloys, that can be biaxially textured, with a well-developed, single component texture are disclosed. These alloys have a significantly reduced Curie point, which is very desirable from the point of view of superconductivity applications. The biaxially textured alloy substrates also possess greatly enhanced mechanical properties (yield strength, ultimate tensile strength) which are essential for most applications, in particular, superconductors. A method is disclosed for producing complex multicomponent alloys which have the ideal physical properties for specific applications, such as lattice parameter, degree of magnetism and mechanical strength, and which cannot be fabricated in textured form. In addition, a method for making ultra thin biaxially textured substrates with complex compositions is disclosed.

Abstract: An intermetallic nickel-aluminum base alloy has a microstructure which predominantly includes the binary phase NiAl and further contains the elements chromium and tantalum. The content of the elements chromium and tantalum is in total at most 12 atom %. Preferred contents ranges are 0.3 to 3.8 atom % tantalum and 1.0 to 9.0 atom % chromium. The intermetallic nickel-aluminum base alloy is distinguished in particular by high oxidation resistance at high temperatures, such as for example 1350.degree. C. It is therefore suitable for producing components which are exposed to a high long term temperature stress such as, for example, gas turbine blades. Depending on requirements, additional layers protecting against oxidation can be dispensed with due to the high oxidation resistance.

Abstract: A superalloy having more excellent hot corrosion resistance than conventional single crystal alloys, oxidation resistance levels as high as that of conventional single crystal alloys, high strength, and creep rupture strength; single crystal members used for a blade or a nozzle produced by utilizing such an alloy; and a combined cycle power generation system produced by utilizing such members. A highly hot corrosion resistant and high-strength superalloy consisting essentially of, by weight, 6-12% Cr, 4.5-6.5% Al, 2-12% W, 2.5-10% Ta, not more than 5.8% Mo, 0.1-3% Co, 0.2-3% Nb, 0.1-4% Re, not more than 0.3% Hf, and the balance being Ni and unavoidable impurities; single crystal members used for a blade or a nozzle produced utilizing such an alloy; and a combined cycle power generation system produced by utilizing such members.

Abstract: Described is a material handling apparatus for processing heated formed ferrous metal products and/or glass products comprising a face centered cubic crystal intermetallic alloy of a metal aluminide having the property of withstanding repeated thermal cycling from ambient temperature to about 1600.degree. F. wherein the metal is selected from the group consisting of a group VIII metal of the Periodic Table. Also described is an aluminide roll that also is characterized as retaining its ultimate tensile strength at 1600.degree. F. of at least 75% of the tensile strength the roll had at ambient room temperature.

Abstract: Improved biocompatible liquid delivery compositions, which are useful for the formation of sustained release delivery systems for active agents, are provided. The compositions include liquid formulations of a biocompatible polymer or prepolymer in combination with a controlled release component. The controlled release component includes an active agent. These compositions may be introduced into the body of a subject in liquid form which then solidify or cure in situ to form a controlled release implant or a film dressing. The liquid delivery compositions may also be employed ex situ to produce a controlled release implant. Methods of forming a controlled release implant and employing the liquid formulations in the treatment of a subject are also provided.

Abstract: A filler metal alloy used as a filler for welding east nickel aluminide alloys contains from about 15 to about 17 wt. % chromium, from about 4 to about 5 wt. % aluminum, equal to or less than about 1.5 wt. % molybdenum, from about 1 to about 4.5 wt. % zirconium, equal to or less than about 0.01 wt. % yttrium, equal to or less than about 0.01 wt. % boron and the balance nickel. The filler metal alloy is made by melting and casting techniques such as are melting the components of the filler metal alloy and east in copper chill molds.

Abstract: The improved intermetallic compounds represented by xNiAl+X (x=50.5-63.5), with dopant element X being selected from among Ti, Fe, V, W, Cr, Cu, Mo, Nb, Ta, Hf, Zr and B, are lightweight and have satisfactory oxidation resistance and high-temperature strength and, hence, are useful as structural materials in aerospace (as in space shuttles) and nuclear fields (for use in reprocessing facilities). A representative intermetallic compound having the formula NiAl+x(Mo/Re)+cB, wherein the ratio of Ni:Al is 56.5:43.5, the ratio of Mo:Re is either 1:1 or 1:0.5, x is between 0.1 and 1 at. %, and c is from 0 to 0.2 at. %, is disclosed.

Abstract: An arrangement for interconnecting groups of users into collision domains in a Local Area Network such as an Ethernet comprises a plurality of repeater groups, with each repeater group being connected to a group of user stations. The arrangement also comprises an electronically reconfigurable switch matrix. The switch matrix comprises a plurality of segment lines (or other transmission media) each of which is used to form one collision domain or Ethernet segment. Switch elements under the control of a microcontroller selectively connect particular repeater groups (and the associated user groups) to particular segment lines to form Ethernet segments, each Ethernet segment being a single collision domain. Internetworking devices such as bridges and routers may also be connected to the switch matrix to interconnect particular collision domains.

Abstract: A nickel-base superalloy article has a coating having a composition, in weight percent, of from about 10 to about 20 percent cobalt, from about 14 to about 25 percent chromium, from about 2 to about 12 percent aluminum, from 0 to about 0.2 percent yttrium, from about 0.001 to about 3 percent boron, from about 1 to about 10 percent silicon, balance nickel and incidental impurities. The coating is preferably applied by mixing together two powders, one with a higher solidus temperature and one with a lower solidus temperature, whose net composition is that of the coating. The powder mixture is compacted with a binder, applied to a surface of the article, and heated to a temperature above the lower solidus temperature.

Abstract: A protective coating resistant to corrosion at medium and high temperatures is applied on a nickel-based or cobalt-based superalloy component. The protective coating essentially consists of the following elements (in percent by weight): 25 to 40% nickel, 28 to 32% chromium, 7 to 9% aluminum, 1 to 2% silicon, 0.3 to 1% of at least one reactive element of the rare earths, at least 5% cobalt; and impurities, as well as selectively from 0 to 15% of at least one of the elements of the group consisting of rhenium, platinum, palladium, zirconium, manganese, tungsten, titanium, molybdenum, niobium, iron, hafnium, and tantalum. The total share of the elements of the group is from 0 to a maximum of 15% and a remainder of at least 5% cobalt. The component and the coating applied thereon have a ductile brittle transition temperature below 500.degree. C.

Abstract: A family of environmentally-resistant alloys is provided which are suitable for forming a blade tip for a turbine blade of a gas turbine engine. The blade tip alloys preferably have a chemical composition of, in weight percent, about 14 to about 18 percent chromium, about 6.45 to about 6.95 percent aluminum, about 9.75 to about 11.45 percent cobalt, about 5.95 to about 6.55 percent tantalum, about 1.85 to about 2.35 percent rhenium, about 0.05 to about 1.75 percent hafnium, about 0.006 to about 0.03 percent zirconium, about 0.02 to about 0.11 percent carbon, up to about 1.1 percent silicon, up to about percent 0.01 percent boron, with the balance being nickel and typical impurities.

Abstract: A protective coating resistant to corrosion at medium and high temperatures is applied on a nickel-based or cobalt-based superalloy component. The protective coating essentially consists of the following elements (in percent by weight): 25 to 40% nickel, 28 to 32% chromium, 7 to 9% aluminum, 1 to 2% silicon, 0.3 to 1% of at least one reactive element of the rare earths, at least 5% cobalt; and impurities, as well as selectively from 0 to 15% of at least one of the elements of the group consisting of rhenium, platinum, palladium, zirconium, manganese, tungsten, titanium, molybdenum, niobium, iron, hafnium, and tantalum. The total share of the elements of the group is from 0 to a maximum of 15% and a remainder of at least 5% cobalt. The component and the coating applied thereon have a ductile brittle transition temperature below 500.degree. C.

Abstract: A nickel-based alloy which is excellent not only in anti-corrosion properties but also in workability is disclosed. The alloy contains 15 to 35 weight % of chromium; 6 to 24 weight % of molybdenum; wherein the sum of chromium plus molybdenum is no greater than 43 weight %; 1.1 to 8 weight % of tantalum; and balance nickel and unavoidable impurities. The alloy may optionally include no greater than 0.1 weight % of nitrogen; no greater than 0.3 weight % of magnesium, no greater than 3 weight % of manganese, no greater than 0.3 weight % of silicon, no greater than 0.1 weight % of carbon, no greater than 6 weight % of iron, no greater than 0.1 weight % of zirconium, no greater than 0.01 weight % of calcium, no greater than 1 weight % of niobium, no greater than 4 weight % of tungsten, no greater than 4 weight % of copper, no greater than 0.8 weight % of titanium, no greater than 0.8 weight % of aluminum, no greater than 5 weight % of cobalt, no greater than 0.

Abstract: To improve high-temperature strength, as well as increased resistance to wear due to sparking, a Ni-based alloy sparking plug electrode material for use in an internal combustion engine is provided. Such a Ni-based alloy sparking plug electrode material contain, by weight, from 3.1 to 4.3 of Al, from 0.5 to 1.5% of Si, from 0.45 to 0.65% of Mn, from 0.002 to 0.01% of C, from 0.005 to 0.05% of at least one of Mg and Ca, and, as necessitated, from to 2% of Cr, with the balance substantially Ni and inevitable impurities.

Abstract: A nickel base superalloy capable of being made into a single crystal article is provided with high temperature strength and improved stability by limiting the presence of an undesirable SRZ constituent. Significant to the control of formation of such undesirable constituents is the control of the amount of Re in the alloy in combination with elements such as Al, Cr, Ta, Mo, Co and W. A solution heat treatment is provided for additional control.

Abstract: The invention relates to an austenitic nickel-chromium-molybdenum alloy having high resistance to general corrosion, crevice, pitting and stress crack corrosion and also intercrystalline corrosion, consisting of (in % by weight):carbon: up to 0.01%silicon: up to 0.05%manganese: up to 0.50%phosphorus: up to 0.020%sulphur: up to 0.010%chromium: 14.0 to 18.0%molybdenum: 14.0 to 18.0%cobalt: up to 2.0%tungsten: up to 0.5%calcium 0.001 to 0.010%magnesium: 0.001 to 0.020%aluminium: 0.05 to 0.30%nitrogen: up to 0.02%iron: up to 3.0%copper: up to 0.5%titanium: up to 0.01%residue nickel and usual impurities due to melting, the sum of the contents (carbon+silicon+titanium) being limited to 0.05% at the most, and the sum of the elements (calcium+magnesium+aluminium) being adjusted within the limits 0.055 to 0.33%.

Abstract: Weldable nickel aluminide alloys which are essentially free, if not entirely free, of weld hot cracking are provided by employing zirconium concentrations in these alloys of greater than 2.6 wt. % or sufficient to provide a substantial presence of Ni--Zr eutectic phase in the weld so as to prevent weld hot cracking. Weld filler metals formed from these so modified nickel aluminide alloys provide for crack-free welds in previously known nickel aluminide alloys.

Abstract: A nickel base superalloy capable of being made into a single crystal article is provided with high temperature strength and improved stability by limiting the Presence of an undesirable SRZ constituent. Significant to the control of formation of such undesirable constituents is the control of the amount of Re in the alloy in combination with elements such as Al, Cr, Ta, Mo, Co and W. A solution heat treatment is provided for additional control.

Abstract: An Ni base alloy for use in spark plug electrodes for internal combustion engines which consists essentially of, on a weight percent basis,0.1 to 1.5% Si,0.1 to 0.65% Mn,3.1 to 5% Al,0 to 2% Cr,0 to 0.5% of one or more elements selected from the group consisting of Y and rare earth elements,0 to 5% Co,0 to 0.5% of Hf and/or Re, andthe remainder Ni and incidental impurities.

Abstract: One form of an improved cast, hollow, columnar grain nickel base alloy article is provided with outstanding elevated temperature stability as represented by oxidation resistance, an improved combination of longitudinal and transverse stress rupture properties, and a thin wall of less than about 0.035 inch, substantially free of cracks. Described is a heat treatment in combination with an alloy for providing such an article.

Abstract: A nickel-based superalloy consisting essentially of, in weight percent, from about 4 to about 5 percent chromium, from about 11 to about 14 percent cobalt, from about 4 to about 8 percent tungsten, from about 6 to about 10 percent tantalum, from about 5 to about 7 percent aluminum, from about 5.5 to about 8 percent rhenium, from about 0 to about 0.50 percent hafnium, from about 0 to about 0.07 percent carbon, from 0 to about 0.01 percent boron, from 0 to about 0.030 percent yttrium, from 0 to about 6 percent ruthenium, from 0 to about 1 percent molybdenum, from 0 to about 1 percent niobium, and the balance essentially nickel. Articles made from the superalloy of the invention are especially useful when cast as single crystal airfoils for use in advanced gas turbine engines.

Abstract: A nickel-chromium-molybdenum-niobium alloy affords high resistance to aggressive corrosives, including chlorides which cause crevice corrosion and oxidizing acids which promote intergranular corrosion, the alloy also being readily weldable and possessing structural stability at very low as well as elevated temperatures. The alloy consists essentially of, (by weight), 19-23% Cr, 12-15% Mo, 2.25-4% W, 0.65-2% Nb, 2-8% Fe, balance Ni.

Abstract: A NiAl nickel aluminide alloyed with yttrium, optionally gallium, and an element selected from the group consisting of chromium, molybdenum and combinations thereof, having improved room temperature ductility and plastic strain. NiAl nickel aluminide intermetallics alloyed with no more than about 5 atomic percent of additional elements have significantly improved room temperature ductility over conventional unalloyed beta phase nickel aluminides or beta phase nickel aluminides alloyed with higher percentages of additional elements. The NiAl nickel aluminide comprises, in atomic percent, at least 50% nickel, about 0.01% to about 0.25% yttrium, about 0 to about 0.15% gallium, about 0.05% to about 4% of an element selected from the group consisting of chromium, molybdenum and combinations thereof, and balance from about 40% to about 49.85% aluminum and trace impurities.

Abstract: The specification discloses nickel aluminide alloys which include as a component from about 0.5 to about 4 at. % of one or more of the elements selected from the group consisting of molybdenum or niobium to substantially improve the mechanical properties of the alloys in the cast condition.

Abstract: An article exhibiting superior mechical properties and resistance to oxidation corrosion at elevated temperatures as described. The article has particular utility in gas turbine engines and is comprised of a nickel base superalloy consisting essentially of 3-10% Cr, 12.1-16% Co, 1.0-1.9% Mo, 3-10% W, 0-5% Re, 4-7% Al, 0-1.5% Ti, 0-8% Ta, 0.5-3% Hf, 0-2% Cb, 0-1% V, 0.02-0.12% Zr, 0.03-0.2% C, 0.005-0.25% B, 0-0.15% of an oxygen active element such as yttrium, balance essentially nickel. This composition is melted and directionally solidified in columnar grain form to provide useful articles.

Abstract: Disclosed is a nickel-base alloy for use under "super oxidizing" environments, for example, concentrated sulfuric acid, fuming nitric acid, chromium acid and mixtures containing chromic acid. The alloy has good strength and may be precipitation hardened. Its thermal stability and weldability are excellent. The alloy has a high degree of resistance to pitting. A nominal composition contains, in percent by weight, about 20 chromium, about 2 copper, about 2 iron, about 2 molybdenum, about 5 silicon and the balance nickel plus normal impurities.

Abstract: There is provided by the present invention yttrium and yttrium-silicon bearing alloys which are chemically and mechanically compatible with advanced nickel-base superalloys and nickel-base eutectic superalloys and which posses excellent resistance to high temperature oxidation. The alloys of the invention are, therefore, particularly useful as a protective environmental coatings for the external surfaces of hot-stage aircraft gas turbine engine components, e.g., rotating blades and stationary vanes, made from such advanced superalloys.

Abstract: There is provided by the present invention an alloy which is mechanically and chemically compatible with advanced nickel-base superalloys and nickel-base eutectic superalloys and which possesses excellent resistance to high temperature oxidation. The alloy of the invention is, therefore, particularly useful as a protective environmental coating for the external surfaces of hot-stage aircraft gas turbine engine components, e.g., rotating blades and stationary vanes, made from such advanced superalloys.

Abstract: A novel, nickel-base, high temperature alloy body preferably containing about 20% chromium, 6 to 7% aluminum to provide phase, 1.5 to 2.5% molybdenum, 3 to 4.5% tungsten, additional strengthening elements and oxidic yttrium in finely dispersed form. The alloy body has an elongated crystal structure and is characterized by high strength along with excellent hot corrosion and oxidation resistance.

Abstract: The specification discloses nickel aluminide alloys including nickel, aluminum, chromium, zirconium and boron wherein the concentration of zirconium is maintained in the range of from about 0.05 to about 0.35 atomic percent to improve the ductility, strength and fabricability of the alloys at 1200.degree. C. Titanium may be added in an amount equal to about 0.2 to about 0.5 atomic percent to improve the mechanical properties of the alloys and the addition of a small amount of carbon further improves hot fabricability.

Abstract: Alloy compositions for nickel-base superalloys having the qualities of weldability, castability and forge-ability together with improved high temperature strength and rupture properties are disclosed. The weldability is improved by varying the Al, Ti, Nb and Ta content so as to insure that only the favorable .gamma." precipitates are formed in the alloy. The high temperature properties of the alloy compositions are optimized by controlling the content of the major alloying elements Co and Cr. Preferably the alloy is substantially free of Fe.

Abstract: The addition of small amounts of rhenium, technitium and their mixtures and, optionally erbium, to a nickel-based superalloy in which the ratio of nickel to chromium is approximately 3-4 to 1, provides enhanced mechanical properties particularly suitable for applications in the manufacture of gas turbine engine components, airframe skins and combustion chambers.

Abstract: An alloy for coating austenitic super alloy materials for high-temperature service is provided. It comprises a nickel, chromium, aluminum alloy with at least one metal of Group IV and/or one transition metal of Group V of the periodic table as additives and yttrium, and/or hafnium included to improve adhesion of the alloy coating and of the aluminum oxide film formed thereon during heat treatment and intended high-temperature service.

Abstract: Nickel base superalloy single crystal articles, preferably aircraft gas turbine blades and vanes, and a process for preparation thereof, wherein phase stability after extended elevated temperature exposure is enhanced by controlling the content of heavy refractory elements and gamma prime phase forming elements. The nominal alloy composition range in weight percent is 4-6 percent chromium, 8-12 percent cobalt, 1-2.5 percent molybdenum, 3-6 percent tungsten, 1.8-3.2 percent rhenium, 0-2.5 percent ruthenium, 5-6 percent aluminum, 0.5-1.5 percent titanium, 7-10 percent tantalum, 0.08-0.12 percent hafnium, balance nickel. The sum of the heavy refractory elements molybdenum plus tungsten plus rhenium is 8.4-10.4 percent, and the sum of the gamma prime forming elements aluminum plus titanium plus tantalum is 13.8-15.7 percent.

Abstract: A high temperature protective coating formed by an alloy on the basis of nickel, cobalt, chromium, aluminum and also frequently of yttrium. There is improved adherence of the metallic oxide covering layer which forms on the protective coating and increased the oxidation and corrosion resistance. Silicon may be admixed to the alloy as a first addition. The amount of the silicon to be admixed to the alloy lies between 1 and 3% by weight. The oxidation and corrosion resistance can be increased by means of a further addition of zirconium in an amount of 1% by weight. The same results can be obtained by a further addition of tantalum, also in the amount of 1% by weight.

Abstract: Nickel-base, high chromium alloys characterized by good sulfidation and oxidation resistance consisting essentially of about 27 to 35% chromium, about 2.5 to 5% aluminum, about 2.5 to about 6% iron, 0.5 to 2.5% columbium, up to 0.1% carbon, up to 1% each of titanium and zirconium, up to 0.05% cerium, up to 0.05% yttrium, up to 1% silicon, up to 1% manganese, balance nickel.

Abstract: A mechanically alloyed composition of matter or alloy containing 30-40% chromium, 5-25% cobalt, 0.5-10% iron, 0.2-0.6% aluminum, 0.3-1.2% titanium, up to 0.15% carbon, about 0.2-1% yttria, up to about 0.3% nitrogen, the % titanium being at least about 1.4 times the % nitrogen, minor amounts of optional elements, the balance being essentially nickel. The consolidated and hot worked alloy with coarse grains produced by heat treatment at about 1300.degree. C. is useful in service requiring hot strength along with extraordinary resistance to oxidation, sulfidation and hot corrosive media. Specific utilization of the alloy of the invention is contemplated in handling molten glass and in utensils adapted to be used in contact with molten glass, e.g. spinners.

Abstract: The invention relates to a Ni-base alloy which contains Mo, Al and Fe, and further, as required, one or more of the following: a group consisting of one or more of V, W, Cr and Cu; one or both of B and Ca; and Co. The alloy of the invention has excellent resistance to stress corrosion cracking even after being subjected to thermal processing such as welding without need for solution treatment thereafter.

Abstract: The addition of small amounts of rhenium, technitium and their mixtures and, optionally erbium, to a nickel based superalloy consisting essentially of 19.3-19.7 weight percent chromium, about 0.5% carbon, about 2.5% iron, the balance essentially nickel, provides enhanced mechanical properties particularly suitable for applications in gas turbine engine components.

Abstract: An improved nickel-iron aluminide containing chromium and molybdenum additions to improve resistance to sulfur attack.

Abstract: Disclosed is a nickel-base alloy having a low coefficient of thermal expansion and a high degree of corrosion and oxidation resistance for use without a coating. The high strength alloy is not notch sensitive under impact and has very short term ordering to A.sub.2 B structure in aging. The alloy nominally contains, in weight percent, 8 chromium, 25 molybdenum, about 0.003 boron, about 1 iron, about 0.5 manganese, about 0.4 silicon and the balance nickel plus normal impurities.

Abstract: Nickel-chromium alloys consisting essentially of from 30-75 nickel, 12-30% chromium, up to 10% molybdenum, up to 8% tungsten, up to 15% cobalt, up to 5% of niobium and/or tantalum, titanium plus aluminum up to 5%, and carbon nitrogen and silicon in correlated percentages to thereby improve low cycle and thermal fatigue strength, the balance being from 0 to 50% iron.

Abstract: A carburization-resistant alloy comprising in weight percent about 50 to about 55% nickel, about 16 to 22% chromium, about 3 to about 4.5% aluminum, up to about 5% cobalt, up to about 5% molybdenum, up to about 2% tungsten, about 0.03 to about 0.3% carbon, up to about 0.2% rare earth element, balance essentially iron. The alloy is useful for structures, objects, parts etc. which are exposed in use to carburizing atmospheres and which, periodically are subjected to oxidizing atmospheres. For example the alloys are useful for pyrolysis tubes used in the petrochemical industry which must periodically be subjected to oxidizing atmospheres to burn-out carbon deposits and which, during pyrolysis are in contact with atmospheres having log Po.sub.2 spanning at least the range of -17 to -26 and which exist at various temperatures.

Abstract: A material for storage of hydrogen, consisting essentially of an alloy represented by the following general formula:LmNiawhere Lm signifies rare earth metals which contain 40 to 70% by weight of lanthanum, 0.1 to 20% by weight of cerium and other metals such as neodymium, praseodymium, and/or samarium; and a signifies a range of 4.8<a<5.5. Thus, improved hydrogen absorption under relatively low pressure at room temperatures and also improved hydrogen absorption pressure and release equilibrium pressure can be provided.

Abstract: A coating for protecting the surfaces of gas turbine components such as single crystal turbine blades and vanes, wherein the coating has a composition (in weight percent) consisting essentially of chromium, 15-35; aluminum, 8-20; tantalum, 0-10; tantalum plus niobium, 0-10; silicon, 0.1-1.5; hafnium, 0.1-1.5; yttrium, 0-1; cobalt, 0-10; and nickel, balance totalling 100 percent. A preferred coating, which is particularly desirable for use with single-crystal turbine blades and vanes, has a composition consisting essentially of chromium, 17-23; aluminum, 10-13; tantalum plus niobium, 3-8; silicon, 0.1-1.5; hafnium, 0.1-1.5; yttrium, 0-0.8; cobalt, 0-trace; and nickel, balance totalling 100 percent. A process for preparing the coated component is also described.

Abstract: Nickel aluminides and nickel-iron aluminides treated with hafnium or zirconium, boron and cerium to which have been added chromium to significantly improve high temperature ductility, creep resistance and oxidation properties in oxidizing environments.

Abstract: A superalloy composition and single crystal articles of the composition are described. The broad range is 3-12% Cr, 0-3% Mo, 3-10% W, 0-5% Re, 6-12% Ta, 4-7% Al, 0-15% Co, 0-0.045% C, 0-0.02% B, 0-0.1% Zr, 0-0.8% Hf, 0-2% Nb, 0-1% V, 0-0.7% Ti, 0-10% (Ru+Rh+Pd+Os+Ir+Pt), balance essentially Ni. An equation is presented to select the most useful specific compositions from within this range. An exemplary preferred composition is 5.0% Cr, 10.0% Co, 2.0% Mo, 6.0% W, 3.1% Re, 5.6% Al, 9.0% Ta, 0.1% Hf, balance essentially Ni.

Abstract: A corrosion and wear resistant nickel based alloy having unique high molybdenum content with additions of bismuth and tin or bismuth, tin and antimony dispersed as second phase particles. The resulting alloy is particularly suited for wear ring applications in pumps for corrosive fluids.