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真空/压力烧结对硬质合金脱β层的影响
引用本文:吴恩熙,陈利,张静,汪秀全.真空/压力烧结对硬质合金脱β层的影响[J].硬质合金,2005,22(1):20-22.
作者姓名:吴恩熙  陈利  张静  汪秀全
作者单位:1. 中南大学粉末冶金国家实验室,湖南,长沙,410083
2. 中南大学粉末冶金国家实验室,湖南,长沙,410083;株洲钻石切削刀具股份有限公司,湖南,株洲,412007
3. 株洲钻石切削刀具股份有限公司,湖南,株洲,412007
摘    要:研究了真空和真空/压力烧结两种工艺对均质、梯度硬质合金的性能及其组织结构的影响,分析了梯度硬质合金脱β层的形成机理。研究表明,采用真空/压力烧结工艺可使硬质合金的抗弯强度得到明显提高;而采用相同烧结工艺时,梯度硬质合金的抗弯强度高于均质合金;梯度合金经真空/压力烧结后,虽然脱β层的厚度减小,但强度仍有增加。

关 键 词:真空烧结  真空/压力烧结  脱β层  梯度

The Effect of Vacuum/Pressure Sintering on the Rich Cobalt Layer of Cenmented Carbide
Wu Enxi,Chen Lil,Zhang Jing,Wang Xiuquan.The Effect of Vacuum/Pressure Sintering on the Rich Cobalt Layer of Cenmented Carbide[J].Cemented Carbide,2005,22(1):20-22.
Authors:Wu Enxi  Chen Lil  Zhang Jing  Wang Xiuquan
Affiliation:Wu Enxi1 Chen Li11,2 Zhang Jing2 Wang Xiuquan1
Abstract:The effect of vacuum and vacuum/pressure sintering on the histology and properties of homogeneous and gradient structure cemented carbide was researched in the paper. And the rich cobalt layer forming mechanism of gradient structure was analysed. Results show that the strength is obviously increasing by vacuum/pressure sintering, the strength of gradient structure is higher than homogeneous structure by the same sintering process, vacuum/pressure sintering increases the strength of gradient structure though the thickness of rich cobalt layer diminishs.
Keywords:vacuum sintering  vacuum/pressure sintering  rich cobalt layer  gradient  
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