基于热力学的PCD刀具扩散与氧化磨损  

Diffusion and Oxidation Wear Research of PCD Tools Based on Thermodynamics

作　　者：邵芳[1,2] 刘战强[1] 万熠[1] 高占雨 

机构地区：[1]山东大学机械工程学院,济南250061 [2]滨州职业学院教务处,滨州256603 [3]山东滨州渤海活塞股份有限公司,滨州256600

出　　处：《武汉理工大学学报》2009年第6期126-129,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50705052);教育部博士点基金新教师项目(20070422032)

摘　　要：高速切削金属件的时候,切削温度高达800—1000℃以上,扩散氧化磨损成为PCD刀具的主要磨损原因。从热力学的角度研究PCD刀具扩散氧化磨损规律,计算刀具中碳元素在不同温度下溶入各种工件材料的浓度值,分析高温下氧化反应发生的规律,实验结果与理论分析吻合较好,研究结果可为刀具材料的研究和设计提供参考。Cutting temperature always highly reaches over to 800-1 000℃ during high-speed cutting with PCD tools. Diffusion and oxidation wear are the main wear mechanisms at such high temperature. In this paper, the rules of diffusion and oxidation wear for PCD tools are researched based on thermodynamics. Dissolution concentration in typical normal workpice of PCD tool material at different temperature is then calculated. At last, the rules of oxidation are analyzed. The results provide useful references for tool material design and selection.

关 键 词：热力学 PCD 扩散磨损 氧化磨损 

分 类 号：TG406[金属学及工艺—焊接]