Abstract: In order to obtain a film having a low electric resistance and a good selective absorption property of solar radiation, good rust proofing and good weldability, a stainless steel is dipped in a chemical conversion bath, in which sodium bichromate or potassium bichromate is mixed with sulfuric acid at a predetermined proportion to one another, in accordance with the method of the present invention. The product film of the present invention comprises metal oxides or metal hydroxides with metal (Fe+Cr) finely dispersed therein.

Abstract: Excessive heat-generating current levels produced in semiconductive materials by electrostatically assisted coating apparatus employed to, for example, improve the uniformity of a coating applied to such materials are avoided by passing an auxiliary current through said semiconductive materials in the same region and in a direction opposite to that of the current produced by said electrostatically assisted coating apparatus such that the difference between the said current produced by said electrostatically assisted coating apparatus and the said auxiliary current is less than or equal to a predetermined value.

Abstract: A seal of controlled detachability between a propylene polymer, such as polypropylene, heat sealed to an enamel coated surface comprised of an epoxy resin, an aminoplant resin and an adhesion promoting amount of a carboxylated polypropylene resin, is obtained by incorporating a butene polymer such as polybutene in the enamel coating composition prior to its application to a metal surface.

Abstract: A multiple-layer process for applying, in alternate, successive molecular layers, a protein material, and a ligand extender material to a surface to modify the properties of the surface and to the multiple-layer product so prepared.

Abstract: The emission of formaldehyde from particle board bound with carbamide resin is reduced by coating the boards, during their manufacture and subsequent to pressing the same, with at least one ammonium compound which decomposes thermally at the temperature of the boards during the conditioning period, whereafter the boards are stacked and stored for conditioning.

Abstract: A method for constructing an activity surface comprising a plurality of binder coatings interspersed with layers of particulate rubber. The first two binder coatings are of diluted emulsified asphaltic material to establish a good bond to the underlying foundation material. Subsequent binder coatings are of a styrene butadiene and water mixture with a small quantity of surfactant added to enhance the penetration of the coating. A sealing coat is applied to seal the upper surface and to mechanically screen the harmful effects of sunlight. Each coating of diluted styrene butadiene is permitted to dry before applying a subsequent layer of rubber particles.

Abstract: A cutting tool or a wear-resistant mechanical part comprises: a substrate of WC, Co, TiC, and TaC with or without an inner coating layer of TiC, TiN or TiCN; an intermediate layer of a titanium oxycarbide formed on the surface of the substrate or the inner coating layer by carrying out a reaction thereon at a temperature of 800.degree. to 1,200.degree. C. of a halide of titanium, hydrogen, and carbon monoxide or carbon dioxide or a mixture thereof; and an outer coating layer of aluminum oxide formed on the outer surface of the intermediate layer. The thicknesses of the inner layer, the intermediate layer, and the outer coating layer are of the order of 0.5 to 20 microns, 0.5 to 20 microns, and 0.5 to 10 microns, respectively.

Abstract: Improved electrostatically assisted coating apparatus for placing an electrostatic dipole-type charge, of a predetermined magnitude, on material to be coated before and/or remote from the location where the coating is actually applied to said material by a coating applicator.

Abstract: An inorganic titanium coating, such as a hot end coating for glass containers, is applied to a glass surface by contacting the glass surface, which is at an elevated temperature, for example at least 371.degree. C., with a solution of a tetraalkyl titanate such as tetraisopropyl titanium, in a vehicle comprising a normally liquid ester of a fatty acid or a silicone fluid.

Abstract: Crimping of fishing nets, particularly of the codends of fishing nets of synthetic filamentary yarn, to be subjected to severe mechanical stressing, can be considerably avoided by impregnating the nets with finish consisting of a mixture of a vinyl pyridine copolymer latex, a formaldehyde resin precondensate, formaldehyde, water and, optionally, a dye, drying the nets thus impregnated and subsequently subjecting the nets to a heat treatment at 130.degree. C. to 180.degree. C.

Abstract: Coating a thin film of magnesium hydroxide on the radiant section of the furnace walls of boilers prevents slagging and controls ash buildup.

Abstract: An apparatus for electrostatically coating an object using electrostatically charged powder grains. The invention improves upon the spray bell sprayer by having a fixed hollow shaft providing a central supply line for the powder grains, the spray bell rotates about the hollow shaft and a plurality of compressed air nozzles pass radially into the hollow shaft.

Abstract: A process for producing electronic-grade silicon bodies is disclosed wherein continuously-pulled slim rods which can be formed in situ from the reaction of a seed crystal and a molten silicon source, are pulled into and through a chemical vapor deposition chamber, having in combination different gas curtains along the chamber inner wall, the slim rod surfaces being preheated before entry into the deposition chamber where the rods are simultaneously exposed to heating and thermally decomposable gaseous silicon compounds in order to provide suitable surface reaction conditions on the slim rods for the decomposition of the gaseous silicon compounds resulting in deposition growth upon the surfaces of the rods.

Abstract: A method of accurately terminating the coating of a substrate in an aqueous coating solution is disclosed. The method comprises removing the substrate into an organic displacement liquid which overlies the aqueous coating solution.

Abstract: Method is provided for improving performance alloy structures improved in corrosion and erosion and wear resistance characteristics by the incorporation of an interdispersed phase and a ternary or quaternhary alloy of platinum, rhodium or palladium, the alloy base metal and an alloying element such as aluminum in the structure surface with the use of relatively less of the precious metals for a given depth of case by virtue of the conjoint incorporation of the interdispersed phase.

Abstract: A method of forming a clinically unbreakable composite structure between a noble based metal and a ceramic comprising depositing a thin layer of a bonding material including finely divided particles of a noble metal halide alone or in combination with particles of a noble metal; sintering the layer at a predetermined temperature between 1775.degree. F. and 1975.degree. F. and firing a ceramic over the sintered coating.

Abstract: The invention is a method for diffusing phosphorus into the surface of a silicon substrate using borophosphosilicate glass as the phosphorus source.

Abstract: A method for the deposition of aluminum on a solid body of pyrolysis of tri-isobutyl aluminum vapor diluted with an inert carrier gas.

Abstract: Molybdenum thin films deposited by pyrolytic decomposition of Mo(CO).sub.6 attain, after anneal in a reducing atmosphere at temperatures greater than 700.degree. C., infrared reflectance values greater than reflectance of supersmooth bulk molybdenum. Black molybdenum films deposited under oxidizing conditions and annealed, when covered with an anti-reflecting coating, approach the ideal solar collector characteristic of visible light absorber and infrared energy reflector.

Abstract: According to the process by which the textile material is made, the titanium dioxide pigment having a particle size of at least about 0.18 micron is exhausted from a dispersion of same onto the textile material at a pH below approximately 7.5. Subsequent heat setting of the polyester textile material improves retention of the titanium dioxide pigment.