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초고진공중에 있어서 Tribo-Coating 막의 윤활특성
김형자,加藤康司,전태욱 釜山工業大學校 1993 論文集 Vol.35 No.-
In order to find out the optimum conditions for the thickness of in film and the matrix of lubri-cation material and the surface roughness of material to chance lubricating life and low friction coe-fficient, the relationship between the surface roughness of material and the thickness of In film and their tribological behavior was investigated several soft metals in pin-on-disk tests under repeated rubbing conditions. Base in thought that lubrication for space machine is very important and go developing over the world, in this study we suggest new lubricating, that is tribo-coating, that is able to prove to be powerful that has minimum friction coefficient 0.02 over the world from selec-ting optimum matrix of lubrication material between friction surface.
李亨資,萱場孝雄,加藤康司 釜山工業大學校 1984 論文集 Vol.26 No.-
Lubrication properties of grease in sliding friction were examined in detail in Vacuum(10??Pa 1.3×10??Pa). Frictional specimens were made of stainless steel(SUS304) and their contact surface were finished by emery paper. The roughness of the surface was 0.04㎛. The mass of grease supplied at the interface was changed in various degrees, and the change of frictional force was observed in sliding process. The change of coefficient of friction was observed in atmospheric pressure and sliding velocity and change of friction force.
金亨資,全泰玉,加藤康司 釜山工業大學校 1994 論文集 Vol.36 No.-
Sliding friction between spherical pin of 8mm in diameter and flat(disk) substrates coated with vacuum-deposited thin film was measured under on ultra high vacuum pressure for various materials, rate of film supply(8∼210nm/min), sliding velocity(1.5∼67.0nm/s), flash temperature. It was found that the most effective lubrication is obtained when the adhesion between pin of Si₃N₄ and disk of SUS440C is high and that between pin of Si₃N₄ and disk of Si₃N₄ is low. When In film is used as a lubricant between pin of Si₃N₄ and disk of stainless steel, the friction coefficient has a value as low as 0.04. In this case, the normal load W and the sliding velocity V are expressed as 1ON and 24mm/s for 10??Pa. The dependence of μon the thickness h of the Ag film, which is used as a lubricant between Si₃N₄pin and SUS440C(Q) disk is expressed as μ=0.12 for W=10N and V=24mm/s when the film is thicker than 100nm. A brief discussion on these relations is presented from the viewpoint of the real contact area.