Slide member
AssigneeNihon Parkerizing Co., Ltd.
InventorsMasaaki Beppu, Eiji Hirai, Seiki Mori
Life of this patent
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Abstract
A slide member having a highly lubricative and highly abrasion-resistant plating layer formed on the sliding surface thereof. The plating layer contains fine particles of graphite selected from flake graphite, vein graphite and/or amorphous graphite in its metallic matrix. The plating layer has a hardness of not less than 550 in terms of Hv and is produced by using a plating solution containing naphthalene sulfanate of formalin condensate as surface active agent. The matrix is preferable to be a Ni—P type metallic matrix and the dispersed fine particles of graphite are preferable having a size of 0.1 to 20 μm and are contained by 0.1 to 10 wt % relative to the matrix.
Claims2
A slide member having a highly lubricative and highly abrasion-resistant plating layer formed on the sliding surface thereof comprising:
- a sliding member having a sliding surface, said sliding surface being plated with a plating layer comprising a Ni—P metallic matrix of a hardness of not less than 550 Hv, said metallic matrix comprising 0.1 to 10 wt. %, relative to the metallic matrix, of fine particles of graphite selected from the group consisting of flake graphite, vein graphite, amorphous graphite, or mixtures thereof, said particles having a size of 0.1 to 20 μm, wherein said plating layer is formed in a plating solution containing naphthalene sulfonate of formalin condensate as active surface agent.
Dependencies are inferred from the claim text.