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Research Of Gradual Copper-Graphite Self-lubrication Materials And Its Tribology Property

Posted on:2007-08-15Degree:DoctorType:Dissertation
Country:ChinaCandidate:C H LiFull Text:PDF
GTID:1101360212968303Subject:Vehicle Engineering
Abstract/Summary:PDF Full Text Request
Along the main line that FGM is introduced into Cu-graphite self-lubrication composite material, this dissertation has studied some key technological problems about design, manufacture, property and friction of Cu-graphite self-lubrication composite. Research process and results are following.1. Plating film with gradual distribution of Nickel and phosphor component on the surface of graphite powder is studiedNi-P electroless plating film is plated on the surface of graphite powder, and it combines well with graphite. In sintering procedure, Ni-P electroless plating film does not melt and reunite, and it does not damage either. Copper forms good soakage and extension on Ni-P electroless plating film which combines well with matrix. Gradual plating technology is designed, which realizes gradual distribution of Nickel and phosphor component in electroless plating film. It solves the contradiction that different part of Ni-P electroless plating film needs different phosphor content for different purpose. At the same time, it avoids invalidation of plating bath owing to huge specific surface area of graphite powder in the process of electroless plating.2. Gradual distribution in Cu-Graphite self-lubrication composite material is realizedFor wear and tear property of Cu-Graphite self-lubrication composite material, a view realizing gradual property distribution in friction materials is put forward. Directional melting gradual techniques making copper graphite self-lubrication composite material form gradual component distribution has been designed and accomplished. The directional melting...
Keywords/Search Tags:Cu-Graphite Composite Material, Self-lubrication, FGM, Friction, abrasion, powder metallurgy, activated sintering, Electroless plating
PDF Full Text Request
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