| 摘要 |
PURPOSE:To improve the resistance to wear and welding of a sintered body of cubic boron nitride and to improve its strength by constituting a binding phase contained in a specified proportion in a sintered body of a specified ceramic component, specified metal component and specified proportion of whisker. CONSTITUTION:The title sintered body of cubic boron nitride is constituted of 20-90vol.% cubic boron nitride and residual vol.% binding phase, wherein said binding phase is constituted of a ceramic component comprising >= one kind among oxides, nitrides, borides of metal of the group 4a, 5a, and 6a of the periodic table, and solid soln. thereof to each other, >= one kind among Al, Si, Co, Ni, Ti, and intermetallic compds. thereof, and whisker. The content of the whisker is regulated to 10-75vol.% of said binding phase. When the content of the whisker is <10% in this sintered body, the improving effect for the strength is reduced. When it exceeds 75%, the content of other binding phase is reduced relatively, and the strength of the sintered body is reduced due to insufficiency in the strength for retaining the whisker. |
