PLAIN BEARING MULTILAYER COATING STRUCTURE AND PLAIN BEARING MULTILAYER COATING STRUCTURE MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide a multilayer coating structure of a sliding member such as a plain bearing in an internal combustion engine, for example, exhibiting one of a plurality of excellent fatigue resistance and excellent abrasion resistance, appropriate seizure resistance, and other necessary properties for current various internal combustion engine applications.SOLUTION: A plain bearing according to the present invention includes a back metal layer 11; a bearing metal layer 12; an arbitrary intermediate layer 13; and a coat 14 The coat 14 includes a plurality of layers disposed to be stacked. The plurality of layers include two or more relatively soft, soft layers 14a, and one or a plurality of relatively hard, hard layers 14b. The soft layers and the hard layers are alternately disposed, each soft layer contains a metal or an alloy, and each hard layer contains one or a plurality of types of intermetallic compounds. The present invention also concerns a manufacturing process for this sliding coat.SELECTED DRAWING: Figure 1 【課題】優れた耐疲労性及び耐摩耗性、良好な耐焼き付き性、並びに現代の様々な内燃機関用途に必要な他の特性、のうちの１つ又は複数を有する、例えば内燃機関の平軸受などの滑り部材の多層被覆構造の提供。【解決手段】本発明に係る平軸受は、裏金層１１、軸受メタル層１２、任意の中間層１３、及び被覆１４を含み、被覆が、積層配置された複数の層を含み、複数の層が、２層以上の相対的に軟質の軟質層１４ａと、１層又は複数層の相対的に硬質の硬質層１４ｂとを含み、軟質層及び硬質層が交互に配置され、各軟質層が金属又は合金を含み、各硬質層が１種類又は複数種類の金属間化合物を含む。本発明は、この滑り被覆の製造工程にも関する。【選択図】図１