Composite construction and manufacturing method thereof

作者: Tatsuyuki Nakaoka , Hiromi Fujioka , Daisuke Shibata

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摘要: A composite construction 1 is obtained by coating the outer periphery of a core material 2 with shell layer 3. The composed first sintered body that bonding, binder metal, hard particle one or more carbides, nitrides and carbonitrides metals Groups 4a, 5a 6a Periodic Table, ceramics sintering additive, ceramic at least oxides, selected from group consisting Al, Si Zn. 3 second having different composition body. ratio residual free carbon amount Cin in to Cout 3, Cin/Cout, 0.5 2. This prevents shrinkage during time also strength lowering due poor sintering.

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