Abstract: Rod and wire or other ferrous material is annealed, normalized, spherodized, etc. in a furnace under nitrogen based atmospheres to which is added a mixture of methylacetylene and propadiene. This latter mixture reacts with decarburizing substances such as carbon dioxide in the furnace at relatively low temperatures of about 1000.degree.-1100.degree. F. to substantially preclude decarburization of the ferrous material. The use of a mixture of methylacetylene and propadiene in the amount of approximately 0.1-10% by volume of the furnace atmosphere also results in a relatively high CO level, reduces decarburization and oxidation of the ferrous material.

Abstract: A heat-resistant shift member is disclosed which comprises (i) a fundamental body having substantially a desired configuration and formed of one or more of compressed heat-resistant materials such as expanded graphite with entangled wires being firmly embedded therein, and (ii) a shifting surface layer member integrally covering the shifting surface of the fundamental body which is formed of other compressed sheet-like heat-resistant materials such as asbestos, a heat-resistant sheet material made of fibers of asbestos, etc.

Abstract: A fiber-reinforced metal composite material comprising a metal or alloy as the matrix and an inorganic fiber as the reinforcing material, characterized in that at least one element selected from the group consisting of elements belonging to the fourth or higher periods of the group (IA) in the periodic table, elements belonging to the fifth or higher periods of the group (IIA) in the periodic table, and Bi and In in the form of simple substance or organic or inorganic compound is incorporated into either one or both of the matrix metal or the reinforcing material in an amount of 0.0005 to 10% by weight (calculated in terms of the element) so as to enhance the mechanical strength of the composite material.

Abstract: Directed to a corrosion resistant alloy particularly designed for use in power plant exhaust gas scrubbers which contains about 0.015% to about 0.025% carbon, not more than about 1% manganese, not more than about 0.3% silicon, about 19% to about 22% chromium, about 8.5% to about 9.5% molybdenum, about 30% to about 42% nickel, up to about 0.2% nitrogen, with the nickel and nitrogen contents being so related that at about 30% nickel, the nitrogen content is at least about 0.15%, while at a nickel content of at least about 40%, the nitrogen content does not exceed about 0.03%, the balance being essentially iron, with the iron content in the range of about 28% to about 40%.

Abstract: This application disclosed a method and apparatus for conducting various metal treatment processes including nitriding, carbonitriding, nitrocarburizing, surface activation, and selective oxidation in any desired sequence in the same fluidized bed furnace. The apparatus comprises a fluidized bed furnace having a humidifier system including a humidifier and superheater and the method involves exposing a metal workpiece sequentially to at least two separate metal treatment atmospheres in a fluidized bed furnace.

Abstract: An ornamental composite material has a covering of an Ni-, Au-, Ag- or Cu-base alloy, and a core of a mineral powder aggregate. A layer of a metal different from the metals of the alloy of the covering can be clad on the inner surface of the covering as needed. The ornamental composite material is preferably used for various parts of a spectacle frame.

Abstract: This specification is directed to a new article of manufacture. In particular, the article is a glass sheet having first and second sides spaced apart in generally parallel planes with a multilayer coating on one of the sides of the glass sheet. The side of the glass sheet having the multilayer coating thereon is designated as the film side of the glass sheet while the other side is designated as the glass side of the glass sheet. The multilayer coating film is a film selected from the group of films consisting of a copper, stainless steel, titanium dioxide multilayer film; a copper, titanium, titanium dioxide multilayer film; and a copper, titanium, titanium nitride multilayer film. The multilayer coating film is characterized, when applied to 6 mm thick clear glass, as having: (1) a film side Y-x-y chromaticity value of reflective color falling within area A of the graph of FIG. 1 of this specification; (2) a glass side Y-x-y chromaticity value of reflective color falling within area B of the graph of FIG.

Abstract: A silicon carbide electrical insulator material of low dielectric constant comprising an electrically insulating sintered body containing silicon carbide as a main constituent and an element providing electrical insulating properties in sintered state, wherein the sintered body comprises an element selected from V family in the periodic table and the carrier concentration within the crystal grain of silicon carbide is 5.times.10.sup.17 cm.sup.-3 or less.

Abstract: A magnetic recording medium having a non-magnetic substrate on which a first bismuth Bi under layer, a first magnetic metal layer, a compound layer made of the magnetic metal, a second bismuth Bi under layer and a second magnetic metal layer are sequentially formed in this order.

Abstract: This invention provides a tin-free steel sheet, having superior lacquer adhesion, comprising metallic chromium and chromium oxide coatings on a steel sheet, characterized in that the chromium oxide coating is controlled such that I.sub.Cr.sup.580 /(I.sub.Cr.sup.580 +I.sub.Cr.sup.660) has a value of 0.5 or more provided that I.sub.Cr.sup.580 is the percent transmission corresponding to ol linkage and I.sub.Cr.sup.660 is the percent transmission corresponding to oxo linkage in the infrared absorption spectrum of said chromium oxide coating as measured by Fourier transform infra-red spectroscopy.

Abstract: The invention relates to molded pieces of plastic having at least a partial metal coating of their surfaces. The surfaces to be coated are roughened up by means of suitable pretreatment so that a good adhesion of the metal coating on the molded pieces is provided. For the support of this metal coating additionally a cover layer is applied. The molded pieces can also consist of shrinkable material which e.g. are also designed in the form of enveloping objects such as cable fittings.

Abstract: There is provided a nonaqueous powdered metal paste composition and a vehicle therefor, characterized by resistance to slumping upon heating to the fusion point of the metal, fusion point being above 500.degree. C., including the powdered metal, and an organic material having a surface tension of from 43 to 65 or higher dynes/cm. at 20.degree. C.

Abstract: An aluminum substrate for magnetic recording media such as magnetic disks, etc., is composed of an aluminum alloy plate containing 2 to 6% by weight magnesium and impurities in only limited amounts and having on the surface an anodic oxidation film with thickness more than 3 .mu.m formed by a chromic acid process. In the thus-anodized aluminum substrate, the occurrence of black spot defects is greatly reduced and the formation of cracks upon heating the substrate to high temperatures is prevented in spite of the thicker anodic oxidation film.

Abstract: A bearing element having an adherent score-resistant coating on its surface comprising a carbonized layer of an organic resin in which the layer is carbonized by ion implantation. The ion implantation is controlled to not only provide graphite-like and diamond-like structures in the carbonized coating but to also produce chemical bonding between carbon atoms of the resultant coating and atoms of the bearing surface.

Abstract: A pack composition is disclosed for case hardening a ferrous metal to initially diffuse boron into the surface thereof and subsequently diffuse boron and silicon into the surface thereof. The pack composition comprises an amorphous boron, a silicon material, an alkyli earth, and a carbon bearing compound with the last named compound including a barium carbonate, a calcium carbonate and a hardwood charcoal and coke mixture.

Abstract: High-temperature protection layer of an alloy with a base of aluminum, chromium and nickel, particularly for structural gas-turbine elements of an austenitic material. The base material of the alloy contains at least 8 to 12 atom % aluminum and 28 to 28 atom % chromium with the remainder nickel, and at least silicon and titanium are admixed to the base material as additives such that at a temperature below 900.degree. C., a passive cover layer of chromium oxide, and at a temperature above 900.degree. C., a passive cover layer of aluminum oxide is developed on the applied alloy.

Abstract: A coating composite provides extended corrosion resistance for substrate metals. The thin metallic undercoat of the composite contains combined metals. The heat curable and substantially resin free topcoat is established from composition containing chromium in non-elemental form, which topcoat composition may further contain particulate metal, all in liquid medium. In addition to outstanding corrosion resistance, the composite can retain substrate weldability as well as achieving formability, while further enhancing paintability and weatherability.

Abstract: A hot strip mill having a final reducing stand and runout cooling means downstream of the reducing stand includes an incubator capable of coiling and decoiling the hot strip. The incubator is located intermediate the runout cooling means. In a preferred form the final reducing stand is a hot reversing mill. A second incubator and/or a temper mill and/or a slitter may be positioned downstream of the first incubator. The method of rolling includes isothermally treating the strip within a predetermined time and temperature range in the incubator prior to subsequent processing. The subsequent processing may include any one or more of the following: further deformation by cold rolling, temper rolling or cooling at a desired heat loss rate.

Abstract: Black-metallized substrate surfaces which are characterized by the fact that they reflect at most 20% of electromagnetic radiation within the wavelength range from 200 to 5,000 nm and at least 50% within the wavelength range from 7,000 to 24,000 nm, the percentages being relative to the mean value over the entire wavelength range in each case, and which can be used as sunlight collectors are obtained by metallizing activated substrate surfaces without current in metallizing baths which contain a polymeric surface-active compound.

Abstract: An oxide thermal barrier coating comprises ZrO.sub.3 --Yb.sub.2 O.sub.3 that is plasma sprayed onto a previously applied bond coating. The zirconia is partially stabilized with about 12.4 w/o ytterbia to insure cubic, monoclinic, and tetragonal phases.