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无机材料学报

无机材料学报

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φ25mmPDC复合材料的组成、结构和性能

邓福铭; 李文铸   

  1. 浙江大学凝聚态物理研究所 杭州 310027
  • 收稿日期:2000-08-21 修回日期:2000-09-07 出版日期:2001-09-20 网络出版日期:2001-09-20

Composition Structure and Properties of 25mm-Diameter Polycrystalline Diamond Composite

DENG Fu-Ming; LI Wen-Zu   

  1. Institute of Solid State Physics; Zhejiang University Hangzhou 310027; China
  • Received:2000-08-21 Revised:2000-09-07 Published:2001-09-20 Online:2001-09-20

PDF (PC)

940

被引次数

5

摘要： 通过ＳＥＭ、Ｒａｍａｎ光谱、ＸＲＤ在ＰＤＣ样品横断面上测试了ＰＤＣ材料的组成和结构；通过ＥＤＸ、ＥＤＷ在ＰＤＣ样品纵断面上测试了ＰＤＣ界面结构及粘结元素Ｃｏ、Ｗ的分布；通过剪切和淬火压溃试验测试了ＰＤＣ界面结合强度和界面耐热性能．测试结果表明，φ２５ｍｍＰＤＣ复合材料的抗弯强度σｂ１１６０ＭＰａ；界面结合强度τ２．６７ＧＰａ ；耐热温度７４２℃；平均磨耗比 Ｑ为１２．３×１０４；其中心点相对边缘点的耐磨性降幅为１９．２％．

关键词: 聚晶金刚石, 复合材料, 烧结

Abstract: The composition and structure of the polished cross section of 25mm-diameter PDC were investigated by SEM,
Raman spectrum and XRD. The interface structure and the distribution of bonding phases of the polished vertical section of the PDC were analyzed by
EDW, EDX, and the properties of the combined-interface of the PDC were measured by shear, quenching and compression test. The test results show
that the 25mm-diameter PDC possesses properties as follows: transverse rapture strength σb 1160MPa; heat-resistance temperature
742℃; bonding strength τ2.67GPa; average wear-resistance Q 12.3×104 with only 19.2% decrease from the peripheral point to the central point.

Key words: polycrystalline diamond, composite, sintering

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