发明名称 |
Gating means for metal matrix composite manufacture |
摘要 |
The present invention relates to the use of a gating means in combination with a spontaneous infiltration process to produce a metal matrix composite body. Particularly, a permeable mass of filler material or a preform is spontaneously infiltrated by molten matrix metal to form a metal matrix composite body. A gating means is provided which controls or limits the areal contact between molten matrix metal and the filler material or preform. The use of a gating means provides for control of the amount of matrix metal which can contact the preform or filler material, which may result in less machining of a formed metal matrix composite body compared with a similar metal matrix composite body made without a gating mean. Moreover, the use of a gating means ameliorates the tendency of a formed metal matrix composite body to warp due to the contact between the formed composite body and matrix metal carcass. In a preferred embodiment, the gating means may comprise a porous material or a precursor to a porous material, which may optionally function as a separation facilitator. Alternatively, the separation facilitator may be provided independent of the gating means.
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申请公布号 |
US5553657(A) |
申请公布日期 |
1996.09.10 |
申请号 |
US19940261694 |
申请日期 |
1994.05.31 |
申请人 |
LANXIDE TECHNOLOGY COMPANY, LP |
发明人 |
AGHAJANIAN, MICHAEL K.;LANGENSIEPEN, RALPH A.;KENNEDY, CHRISTOPHER R.;ROCAZELLA, MICHAEL A.;WIENER, ROBERT J.;HANON, GREGORY E.;CROWTHER, JOHN J.;MCCORMICK, ALLYN L. |
分类号 |
C04B35/622;C04B41/51;C04B41/88;C22C1/10;(IPC1-7):B22D19/14;B22D19/02 |
主分类号 |
C04B35/622 |
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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