Patent ID: 7511000
Filing Date: 2009-03-31
Classification: C10M,C10N,F16H,Y10T

Abstract:
1. A gear part, comprising: a lubrication coating formed on a surface of the gear part, the lubrication coating formed by adhering an aqueous lubricant composition to the surface of the gear part and evaporating water, the lubricant composition consisting of: (a) an alkylphosphonate derivative expressed by Formula I as an organic phosphorous compound, wherein R (b) at least one type of inorganic salt selected from a group consisting of inorganic phosphate, inorganic borate, and inorganic silicate; (c) a sulfurized fatty acid; (d) an organic acid; (e) an organic amine; (f) an emulsifier; and (g) the water; wherein when a tooth surface of the gear part is engaged with a tooth surface of a counter member, the organic phosphorous compound is transferred to the tooth surface of the counter member and another lubrication coating containing the organic phosphorous compound is formed on the tooth surface of the counter member.