发明名称 |
Porous copper powder modified friction material |
摘要 |
Friction material pads for use in a brake system with an aluminum-metal matrix composite rotor wherein a brake application can create operational temperatures that approach 450C. The formulation of the composition for the friction pads is generically a basic non-asbestos organic formula modified to include a high abrasive content, solid lubricant package, and a porous copper powder. The porous copper powder which makes up from 2-18 percent by weight the friction pads has a nominal diameter of 0.20 mm. The porous copper powder proportionally responds to temperature and mechanical forces generated during a brake application by deforming and smearing to aid in the formation of a glaze between the engaging surfaces of the friction pads and aluminum-metal matrix composite rotor. This glaze prevents scoring of the aluminum-based rotor while at the same time maintaining a substantial stable coefficient of friction of approximately 0.4 during brake applications over a wide range of speeds and deceleration rates.
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申请公布号 |
US5339931(A) |
申请公布日期 |
1994.08.23 |
申请号 |
US19930057932 |
申请日期 |
1993.05.07 |
申请人 |
ALLIED-SIGNAL INC. |
发明人 |
JACKO, MICHAEL G.;TSANG, PETER H.;RHEE, SEONG K. |
分类号 |
C08J5/14;C09K3/14;F16D65/12;F16D65/14;F16D69/00;F16D69/02;(IPC1-7):F16D69/00 |
主分类号 |
C08J5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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