TiB<SUB>2</SUB>-5%TaB<SUB>2</SUB>-1%CoBおよびTiB<SUB>2</SUB>-5%W<SUB>2</SUB>B<SUB>5</SUB>-1%CoB焼結体の強化機構
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TiB<SUB>2</SUB>-5%TaB<SUB>2</SUB>-CoB and TiB<SUB>2</SUB>-5%W<SUB>2</SUB>B<SUB>5</SUB>-1%CoB materials have higher transverse rupture strength, hardness and density than those of TiB<SUB>2</SUB>-1%CoB materials. The strengthening mechanism of both types materials, TiB<SUB>2</SUB>-5%TaB<SUB>2</SUB>-1%CoB and TiB<SUB>2</SUB>-5%W<SUB>2</SUB>B<SUB>5</SUB>-1%CoB, has been discussed. The higher transverse rupture strength of the both materials has been caused mainly by suppressing grain growth of TiB<SUB>2</SUB> with the solid solution between TiB<SUB>2</SUB> and TaB<SUB>2</SUB>, or between TiB<SUB>2</SUB> and W<SUB>2</SUB>B<SUB>5</SUB>, and caused secondarily by the lattice strain of TiB<SUB>2</SUB>, and reduction of residual pores.
- 社団法人 粉体粉末冶金協会の論文
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