Abstract: Disclosed is a method of heat treatment of a low melting-point metal for production of spheroidal bodies formed of a low melting-point metal or alloy or heat treatment of the low-melting point metal coated on the surface of an electrode of a chip part.

Abstract: Corrosion and wear resistant metallic compositions containing nickel, cobalt, boron and thallium and articles coated therewith are described. Preferred electroless coatings contain nickel and cobalt in a ratio of about 45:1 to about 4:1 and are deposited as hard, amorphous alloy nodules of high nickel content dispersed or rooted in a softer alloy of high cobalt content. The coatings are preferably deposited on catalytically active substrates from an electroless coating bath containing nickel ions, cobalt ions, thallium ions, metal ion complexing agents and a borohydride reducing agent at pH about 12 to about 14. With post-coating heat treatment coated surfaces exhibit hardness levels as high as about 1300 Knoop.

Abstract: A fine iron powder, being a carbonyl iron powder is electrolessly plated with an oxidatively resistant metallic coating. The coating is obtained from a bath containing nickel and copper salts. Oxidation resistance is improved at temperatures greater than 100.degree. C. Products containing these fine powders include liquids to provide increased oxidation resistance for coating a substrate, and articles formed by such powdered metals with or without other materials, such as ceramic or refractory materials.

Abstract: A platinum article, especially an article of jewellery, has its surface region modified to improve its scratch resistance by the addition of at least one element which forms an intermetallic compound with platinum, especially aluminum and chromium. The surface region may be formed by the pack cementation chemical vapor deposition process.

Abstract: A conventional solder composition of Sn--Bi--Pb which is improved so that, when soldering job at a lower temperature, adequate adhesion strength and a resilient bond is obtained by virtue of additional incorporation of 0.005 to 1% GA and/or 0.01 to 0.1% Ni. The inventive solder is useful in assembly work in the electronic industry wherein thermally weak parts are subjected to soldering.

Abstract: Fume generated by roasting speiss is contacted with an oxygen-containing gas at an elevated temperature for a sufficient time to produce arsenic and antimony products which may be separated from each other by means such as condensation. Further, in the roasting of antimony-containing phases (such as speiss) the presence of arsenic can enhance the volatility of the antimony.

Abstract: A fine amorphous metal wire with a circular cross section that has improved toughness and a composition represented by the formula:Fe.sub.a Co.sub.b Cr.sub.c Si.sub.x Bywhereina+b is from about 53 to 80 atomic %;c is from about 3 to 20 atomic %;x is from about 5 to 15 atomic %; andy is from about 5 to 15 atomic %;provided that ##EQU1## is in a range from about c.times.0.025+0.25 to c.times.0.012+0.73; and x+y is from about 17 to 27 atomic %. Having improved toughness, this fine amorphous metal wire can be drawn or otherwise worked efficiently on an industrial scale with minimum breakage. In addition, this wire has good fatigue characteristics and high corrosion resistance, as well as high tensile breaking strengths, high heat resistance and superior electromagnetic performance. Therefore, the wire is very useful in a broad range of applications including a variety of mechanical members, industrial reinforcements, and electromagnetic materials.

Abstract: Hydrogenated boron-silicon alloy films having unexpected properties permitting in one embodiment the bonding together of metal and ceramic substrates by coating the surfaces to be bonded with the film mating the surfaces and heat treating the mated surfaces to expell hydrogen therefrom and to react to resulting boron-silicon alloy film with the substrates to form a liquid reaction product which forms a surface bond with the substrates or is at least partially absorbed in the substrates. In another embodiment, at least one surface of an intermetallic compound formed from elements selected from groups III and V of the periodic table is sealed against structural degradation by forming on the surface a solid boron-silicon-hydrogen alloy film. In still another embodiment, metal and organic resin substrates are protected against attack by water vapor, dissociated oxygen and molecular oxygen by forming a solid boron-silicon-hydrogen alloy film on the substrates.

Abstract: A graded material system comprising: a refractory metal alloy base having a major metal selected from the group consisting of Group V-B metals (columbium, tantalum and vanadium), and having at least one alloy metal selected from the group consisting of Group IV-B metals (titanium, zirconium and hafnium), Group VI-B metals (molybdenum, tungsten and chromium) and mixtures thereof. The base has a surface containing non-metallic pick-ups in concentration of at least 1 mg/cm.sup.2 at said surface and decreasing inwardly from said surface. The non-metallic pick-ups are selected from the group consisting essentially of: oxygen and carbon; oxygen, carbon and nitrogen; oxygen, carbon and boron; and oxygen, carbon, nitrogen and boron.

Abstract: A compound containing ferric ferrous salt and a producing method thereof are provided in the present invention. Said compound comprises ferric ferrous salt and a salt of alkaline metals or a compound containing a metal which belongs to zinc family, and said producing method of said compound comprises adding ferric ferrous salt into an aqueous solution of strong acid and then adding a salt of alkaline metals or a compound containing a metal which belongs to zinc family. Said compound containing ferric ferrous salt may be very useful in a wide variety of fields, such as water cleaning, keeping freshness of vegetation, antisepsis, antifungi, antibacteria, rust preventing, effluent treatment, soil improvement, ionization control, feed enriching, petroleum improvement, antistatic technique, and the like.

Abstract: A method of injecting burning resistant fuel into a blast furnace, which includes the steps of supplying a hot blast air having a temperature of at least 810.degree. C. into a blast furnace, injecting the burning resistant fuel into the hot blast air, and injecting a gas fuel into the hot blast air independently of injection of the burning resistant fuel. The gas fuel is supplied to an outer peripheral area of the burning resistant fuel. The injection of the gas fuel is in a proportion of at least 2% of the injection of the burning resistant fuel in terms of calorific value.

Abstract: The invention relates to austenitic stainless steels, which resist swelling under irradiation.These steels contain at least one additional element chosen from among tin, germanium and antimony and having a total content from 0.05 to 1% by weight.The presence of one or more of these elements chosen from among germanium, tin and antimony makes it possible to limit the swelling phenomenon. Therefore these steels can be used in nuclear reactors.

Abstract: A composite material is made from alumina-silica type short fibers embedded in a matrix of metal. The matrix metal is an alloy consisting essentially of from approximately 2% to approximately 6% of copper, from approximately 0.5% to approximately 3.5% of magnesium, and remainder substantially aluminum. The short fibers have a composition of from about 35% to about 80% of Al.sub.2 O.sub.3 and from about 65% to about 20% of SiO.sub.2 with less than about 10% of other included constituents, and may be either amorphous or crystalline, in the latter case optionally containing a proportion of the mullite crystalline form. The fiber volume proportion of the alumina-silica type short fibers is between approximately 5% and approximately 50%, and may more desirably be between approximately 5% and approximately 40%. If the alumina-silica short fibers are formed from amorphous alumina-silica material, the magnesium content of the aluminum alloy matrix metal may desirably be between approximately 0.

Abstract: Lead with a low alpha particle emission is produced by selecting an orebody wherein lead mineral is present in a coarsely disseminated form and substantially free of impurities. The ore is selected from a host rock that is relatively low in alpha emitters, such as a carbonate rock. The ore is mined and is milled such that the lead mineral can be separated from the host rock and any other minerals. The ground ore may be screened into one or more fractions having a narrow range of particle sizes. Each fraction is formed into a fluid suspension, and each suspension is subjected to gravity separation to remove the host rock and any other minerals which substantially contain the alpha particle-emitting substances, and to recover the lead mineral as a concentrate with a low alpha count. The lead concentrate is subjected to a suitable smelting operation, without the introduction of alpha emitters for the recovery of a low alpha lead.

Abstract: A method for manufacturing a low-alloy steel product having a very high hardenability in relation to its alloying content is disclosed. The method includes the steps of melting the steel; adding thereto a micro-alloying ingredient selected from group consisting of aluminum, titanium, and aluminum and titanium together; superheating the melt to a temperature of at least 1625.degree. C., holding the melt at the temperature level for at least two minutes; teeming and casting the melt to form ingots and hot-working the ingots to form a low alloy steel product of the following composition:______________________________________ Element Wt % ______________________________________ C 0.3-0.55 Mn 0.3-1.5 Si trace-1.0 Cr .75-1.8 Ni trace-2.0 Mo 0.05-0.4 V 0.05-0.15 P 0.03 Max S trace-0.05 Al 0.04-0.1 or Ti 0.015-0.08 or Al + Ti 0.04-0.

Abstract: An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearing material, the alkaline earth metal compound; forming, at a first temperature, an alloy containing impurities in the slag; removing the alloy containing the impurities from the slag; and then heating the slag to a higher temperature to form the alkaline earth metal aluminide. The alkaline earth metal compound used in the process may comprise calcium carbide. Alternatively, both the alkaline earth metal compound and the aluminum-bearing material may be obtained using a calcium aluminate slag such as a byproduct from the steel industry. The calcium aluminate slag is purified in a preliminary step to remove silicon by alloying it with iron and then removing a ferrosilicon alloy formed in this step.

Abstract: Novel amorphous metal alloy electrodes have the formulaePt.sub.p A.sub.a D.sub.dwhereA is Ir, Pd, Rh, Ru and mixtures thereof;D is B, Al, As, P, Sb, Ge, Sn, Si and mixtures thereof;p is from about 40 to 92 percent;a is from about 1 to 40 percent;d is from about 8 to 40 percent; and p+a+d=100; andNi.sub.n E.sub.e F.sub.f G.sub.gwhereE is Mo, W and mixtures thereof;F is Pt, Pd, Rh, Ir, Cr and mixtures thereof;G is Al, Ga and mixtures thereof;n is from about 30 to 90 percent;e is from about 10 to 50 percent;f is from about 0 to 25 percent;g is from about 10 to 40 percent; and n+e+f+g=100.These electrodes are useful for hydrogen formation and oxidation and operate at lower potentials than existing electrodes.

Abstract: An apparatus for separating a gas from a liquid but truly suited for use in a zero gravity environment. The apparatus includes first and second closed vessels each of which are separated into a gas and liquid zone. The first vessel is separated by gas de-entrainment means and the second vessel by a plurality of elongated passageways for capillary containment of a body of liquid. The passageways provide the sole source of fluid communication between the gas and liquid zones. The gas zones of the first and second vessels are in fluid communication with one another as are the liquid zones of the first and second vessels.

Abstract: A chromium based corrosion resistant alloy consisting of by weight percent: Cr-45-60; Ni-25-44; Mo-6.5-12; Cb-2.0-4.5; C-1.5-2.8; and Si-0.4-1.2. The alloy is suitable for weld deposition as a hard-facing on mechanical face seals in contact with sea water and subject to accelerating factors such as galvanic effects.

Abstract: A development is described for removing metallic impurities from alkali metals by employing an extraction process wherein the metallic impurities are extracted from a molten alkali metal into molten lithium metal due to the immiscibility of the alkali metals in lithium and the miscibility of the metallic contaminants or impurities in the lithium. The purified alkali metal may be readily separated from the contaminant-containing lithium metal by simple decanting due to the differences in densities and melting temperatures of the alkali metals as compared to lithium.