Abstract: A conversion coating solution for treating metallic surfaces has a pH value in the range of 3 to 6 and contains 1 g/l to 50 g/l of an acid alkali phosphate as phosphate ions, 0.2 g/l to 20 g/l of one or more of chlorates and bromates, and 0.01 g/l to 0.5 g/l of tin ions, with a weight ratio of chlorine ions to tin ions being between 0.6 and 6. The solution provides a continuous and uniform conversion coating having high anti-corrosion performance.

Abstract: An improvement is disclosed for the nonelectrolytic deposition of gold by autocatalytic chemical reduction of a deposition bath containing a soluble gold salt in a strongly alkaline medium by initially adding to the deposition bath an effective amount of a metal from Group III, IV or V of the periodic classification of elements in the form of a soluble salt.

Abstract: A printed circuit is formed by a coating the entire region of at least one main surface of an insulating substrate with a resin type adhesive layer containing a solid solution consisting of titanium oxide, nickel oxide and antimony oxide, followed by selectively forming a mask on the adhesive layer to provide the non-masked region as a circuit-forming region. Further, the circuit-forming region is treated with a solution of an oxidizing agent and, then, subjected to an activation treatment. Finally, the mask is removed and a desired conductive layer pattern is formed on the activated surface region by means of electroless plating.

Abstract: An improved process for modifying the properties of membranes, particularly ion exchange membranes, and novel membranes characterized by a unique combination of low gas permeability and low electrical resistivity. The process comprises the steps of modifying the morphology of a pre-membrane by subjecting it to a chemical reaction, advantageously with a reactive macromolecular solute in an organic solvent.

Abstract: Corrosion resistant coatings are applied to metal tubing while substantially continuously moving the metal tubing through a series of stations. The process comprises the sequential steps of flowing by gravity a zinc-rich thermosetting coating suspended in a volatile carrier onto the tubing, the viscosity of the coating composition being such that it flows around and completely covers the external surface of the tubing, removing excess coating by means of an air blower arranged circumferentially around the tubing and sequentially heating the coated tubing first to volatize off the carrier and then more rapidly to crosslink the thermosetting coating composition.

Abstract: A method is provided for removing the harmful material from electrical products such as capacitors prior to their disposal. Poly-chlorinated-biphenyl is removed from electrical products such as capacitors by thermal decomposition.

Abstract: A remotely controlled tool for marking the location of defective tubes in a heat exchanger tube sheet, comprising an axially extensible pilot which is extended into and retracted from the defective tube to be marked by means of an internally threaded captive nut, which is attached to the pilot and is in threaded engagement with an externally threaded drive screw. The drive screw is driven by a reversible drive motor. Marking of a tube is accomplished by means of a paint-saturated annular felt marking pad carried in a cylindrical sleeve which surrounds and is axially slideable with respect to the pilot. The marking pad is driven outwardly along the pilot to engage the tube sheet surrounding the defective tube and is retracted after the marking function has been performed by means of a solenoid.

Abstract: A method of applying a ceramic coating to a metallic workpiece is proposed in which the workpiece is heated in a range of 500.degree. C. to 950.degree. C. and the coating directly plasma sprayed thereon in an atmosphere of air before the workpiece has formed any considerable oxide skin thereon. In this way the use of the conventional bond coat is avoided, while the amount of tensile stress on the ceramic at working temperature is reduced by the pre-stressing effect thus induced.

Abstract: A composition for the abhesive coating of metallic cooking surfaces composed of a heat-curable polysiloxane resin, based on the silicone resin, and 0.05 to 4 weight percent of a compound having the formula ##STR1## in which R.sup.1 and R.sup.2 are the same or different and represent a methyl or phenyl residue, with the proviso that at least 80 mole percent of these residues are methyl residues,R.sup.3 are the same or different and represent a residue or several residues of the group(a) alkyl residues with 1 to 4 carbon atoms,(b) phenyl residues,(c) residues which are capable of reaction with the condensable groups of the curable polysiloxane resin,wherein at least one residue R.sup.3 has the meaning of (c), x is 0 or a number greater than 0.The composition forms coatings which are durably abhesive and possess excellent mechanical resistance under conditions of use.

Abstract: A method in integrated circuit technology of depositing an adherent aluminum film that does not develop significant protrusions, such as "hillocks" and "whiskers", during or following annealing. The aluminum is deposited by evaporation or sputtering techniques while sufficient dry oxygen is introduced periodically into the deposition chamber to form alernating layers of aluminum and oxygen-doped aluminum consisting of no more than 10 atomic percent oxygen. Photolithographically patterning such a laminated film into the appropriate configuration of conducting lines and bond pads, and subsequently annealing such as a laminated film at temperatures from 450.degree. C. to 560.degree. C. in forming gas, results in aluminum surfaces that are free of protrusions with heights above 0.5 .mu.m and in films that have relatively low resistivity, i.e., resistivity that is less than 1.8 times the resistivity of bulk aluminum. The laminated films range in thickness between 8000 to 25,000 angstroms.

Abstract: A metallic coating is applied to a metallic substrate by directing a laser beam on to the substrate and simultaneously directing a gas stream containing entrained particles of the coating material on to the area of laser impingement on the substrate. The particles are melted by the laser beam to form a pool of molten coating metal. Relative movement is effected between the laser beam and substrate so that a pool of molten coating metal traverses the substrate to form a solidified metallic coating which is fused to the metallic substrate.

Abstract: Brass coated steel tire cord is treated with vaporized benzotriazole and/or other treatment agents to promote corrosion resistance and cord to rubber adhesion retention.

Abstract: An improved baked-hardenable solution and method is disclosed for painting an electrical bridge within a cathode ray tube during its manufacture. The solution is particularly valuable in providing a permanent electrically conductive bridge between the high-voltage charged shadow mask of a color picture tube and the aluminum film deposited on the faceplate to ensure that the aluminum film is charged with the same high voltage present on the shadow mask. The solution according to the invention essentially comprises a mixture of substantially equal parts of glass frit particles and graphite particles each consisting of about 14 to 21 percent weight percent of said solution and in the size range of 0.5 to 10 microns. The particles are in solution in an evaporable solvent consisting of about 14 to 21 weight percent and including a thickening agent in an amount sufficient to provide a paintable viscosity.

Abstract: A device for dipping plates (40) in a liquid (70) includes a plurality of elements (20) which form a number of disc-like devices secured at a certain distance from each other on a rotatable shaft (30). Each element is provided with several evenly spaced recesses for receiving the plates and each plate received rests in at least two recesses. The elements are partially immersed in the liquid. The drive mechanism rotates the shaft in steps and the recesses, together with the plates contained in them, then pass through the liquid. During the pauses between the elements rotating, a feeder device (51) pushes the plates into the recesses (21') in the elements from a feeder table (52), whereas the dipped plates are moved by an ejector device (61) to a receiving device (62. The receiving device has a number of compartments (64) with surfaces (60) located above one another, and these compartments are gradually moved into position for receiving the dipped plates.

Abstract: Substrates, especially those having plated metal surfaces, and subjected to passivation treatments in baths that incorporate one or more film-forming agents at least one of which does not require chromium and includes anions or cations of elements other than chromium. Typically, the anions or cations are introduced as bath-soluble salts which react with the plated surface of the substrate to form an adherent, coherent passivation surface film. Also present within these baths are a source of hydrogen ions and a bath-soluble carboxylic acid or derivative activator for enhancing the rate of the passivation reaction. Articles passivated in baths incorporating these film-forming agents have a hydrophobic surface that exhibits corrosion resistance and that typically has a bright finish.

Abstract: This invention relates to a process and composition for producing an iron phosphate conversion coating on a ferrous metal surface at ambient temperatures of from about 50.degree. F. to about 100.degree. F. The ferrous metal surface is contacted with an aqueous acidic phosphating solution having a pH within the range of 3 to 6 and consisting essentially of orthophosphate ions at a concentration of at least about 2.0 grams per liter and an ambient temperature activator comprising nitrite ions at a concentration of at least 0.08 grams per liter.

Abstract: Steel strip is dipped in a molten metal bath (e.g. Al-Zn) maintained at above 500.degree. C., cooled to solidify the metal coating, and then cooled to below 475.degree. C. by an intense and rapid cooling operation which does not impair the flatness of the strip, e.g. immersion in a hot aqueous bath or spraying a mist. Before hot-dipping, the steel strip is preferably recrystallisation annealed and cooled to a temperature not lower than that of the molten metal bath.

Abstract: This case relates to a process for forming protective metal oxide films on metal or alloy substrate surfaces susceptible to coking, corrosion or catalytic activity. The process comprises first preoxidizing the substrate surface and then depositing on the pre-oxidized surface a metal oxide of Ca, Mg, Al, Ga, Ti, Zr, Hf, Ta, Nb or Cr by vapor phase decomposition of a volatile compound of the metal which has at least one metal-oxygen bond. Nitrogen, helium, argon, carbon dioxide, air or steam may be used as carrier gases for the metal compound.

Abstract: A plated member and method of producing the member. The plated member includes a chrome plating over a tin zinc sprayed coating on a prepared surface. The member is produced by acid stripping, cleaning, baking and re-cleaning the member to prepare the surface thereof, subsequently spray coating the prepared surface with a tin zinc material, abrading the surface of the tin zinc coated member to the desired form, and plating the cleaned, coated and abraded surface with two copper, two nickel and one chromium layers.

Abstract: A composition and process are useful for imparting a coating to an iron or steel surface which exhibits decorative and improved electrical and corrosion resistance properties. The composition contains an alkali silicate water-glass, an alkali polyphosphate and insoluble chromic oxide pigment. The composition is applied to the surface by conventional techniques and baked in place.