Abstract:
PROBLEM TO BE SOLVED: To clarify chemical instability that occurs when a refrigerant HFO-1234yf with a double bond in a molecule contacts with metal, and to provide a member for forming a refrigerating circuit with a metal surface taking measures for eliminating the chemical instability based on the clarification. SOLUTION: The member for forming the refrigerating circuit with the metal surface is used for the refrigerating circuit using the specific refrigerant HF-1234yf formed of the molecule with the double bond. The metal surface contacted with the HFO-1234yf is coated by a coating layer substantially unreactive to the HFO-1234yf within a use temperature range. The coating layer is formed of one of a coating fixed on the metal surface, a coating layer formed by the adhesion of a specific component added in a lubricating oil, and a coating layer in which a metal surface layer forming the metal surface itself is modified. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electrical contact member which has wear resistance under a relatively high load of about 1 N or more, and is excellent in sliding characteristics and excellent in heat resistance, and moreover has corrosion resistance; and to provide a method for producing the electrical contact member having such characteristics, and an electrical contact using the electrical contact member. SOLUTION: The electrical contact member has a surface layer composed of a noble metal or an alloy 1 mainly containing the noble metal. The electrical contact member has a heat-resistant organic coating film 2 made from an organic compound having an ether linkage group on the surface of the surface layer. This electrical contact is excellent in corrosion resistance and sliding characteristics. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PCT No. PCT/DE96/00344 Sec. 371 Date Aug. 25, 1997 Sec. 102(e) Date Aug. 25, 1997 PCT Filed Feb. 23, 1996 PCT Pub. No. WO96/26793 PCT Pub. Date Sep. 6, 1996In accordance with the method according to the invention, for the production of the plastics overlay, first of all a paste is made of a plastics dispersion and fillers. This paste is free of organic solvents and is applied to a sintered porous metal layer. The multilayer material thus produced is then sintered. Since the use of organic solvents is dispensed with, health risks and the risk of fire are reduced. Moreover, the composite materials produced according to the invention exhibit excellent cavitation resistance. In addition to conventional lubricant-free applications, such as bearings, these composite materials may consequently be used in particular in gear pumps and shock absorbers.
Abstract:
Lubrication and friction reduction improves fuel efficiency and reduces energy consumption. Effective and controllable material removal results in superior surface finishing and planarization. Nanosheets are developed with specific functionalization that can be used to reduce friction and wear, improve the fluidic property, and rheological performance.. The nanosheets can be from the graphite family, transition metal dichalcogenides, transition metal trichalcogenides, semiconducting chalcogenides, metal oxides, layered hydroxides, clays, ternary transition metal carbides and nitrides, and zirconium phosphates and phosphonates, and their corresponding dopants. Tribological, rheological, and polishing applications include lubricants, viscosity modification, and chemical-mechanical planarization. The nanosheets are useful in improving efficiency and lifetime of machinery, saving energy for mechanical operations, and optimizing manufacturing processes in surface engineering.