...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Precision Engineering >Study of HPHT single crystal diamond as precision cutting tool material
【24h】

Study of HPHT single crystal diamond as precision cutting tool material

机译：HPHT单晶金刚石作为精密切削刀具材料的研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

High pressure high temperature (HPHT) synthetic diamond is rapidly replacing natural diamond in precision machining industry due to its consistency in quality and cost. It is believed by some manufacturers that HPHT diamond cutting tool is virtually free of impurities, inclusions and cracks. This paper is to analyze defects inside HPHT diamond crystal by density test, optical microscopy, SEM, Raman, and XRD. Results show that HPHT diamond is relatively clean, with less chemical elements inside in comparison with natural diamond. However, there are cracks, pit holes, and bubbles in/on the crystal, some tracing amount of cementite (Fe_(3)C), gamma-Fe, and nickel based carbides also exist in the HPHT diamond crystal, causing less accurate cutting tool edge and surface integrity. Residual stresses in HPHT diamond are compressive but high in value, may lead to cutting tool brittleness and micro-chipping, which is a common reason for diamond tool failing in precision machining.
机译：高压高温（HPHT）合成金刚石由于其质量和成本的一致性，正在精密加工行业中迅速取代天然金刚石。一些制造商认为，HPHT金刚石切削刀具实际上不含杂质，夹杂物和裂纹。本文旨在通过密度测试，光学显微镜，SEM，拉曼和XRD分析HPHT金刚石晶体内部的缺陷。结果显示，与天然钻石相比，HPHT钻石相对清洁，内部化学元素更少。但是，在晶体中/晶体上有裂纹，坑洞和气泡，HPHT金刚石晶体中也存在一些痕量的渗碳体（Fe_（3）C），γ-Fe和镍基碳化物，从而导致切割精度降低刀具边缘和表面完整性。 HPHT金刚石中的残余应力具有压缩性，但其值较高，可能导致切削工具脆性和微崩裂，这是导致金刚石工具无法进行精密加工的常见原因。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号