文献类型：期刊文献

英文题名：Thermodynamic characteristics of Al2O3ceramic tool wear in machining of typical workpiece materials

作者：Fang, Shao Fa, Zhang Zhijin, Zhou Yunhai, Wang Lihua, Xiao Qingdong, Qin Aijun, Liu

第一作者：Fang, Shao

机构：[1] School of Mechanical Engineering, Guiyang, 550003, China; [2] Guizhou Institute of Technology, School of Materials and Metallurgical Engineering, Guiyang, 550003, China

第一机构：School of Mechanical Engineering, Guiyang, 550003, China

年份：2017

卷号：65

期号：5

起止页码：258-268

外文期刊名：Journal of Mines, Metals and Fuels

收录：EI(收录号：20173704155924);Scopus(收录号：2-s2.0-85029035403)

语种：英文

外文关键词：Alumina - Aluminum oxide - Cast iron - Ceramic cutting tools - Ceramic tools - Diffusion - Dissolution - Free energy - Gibbs free energy - Temperature - Tribology - Wear of materials

摘要：Cutting temperature always highly reaches over to 1000°C during high speed machining with Al2O3ceramic tools. Diffusion wear is the main wear mechanisms at such high temperature. In this paper, the rules of diffusion wear for Al2O3ceramic tools are studied based on thermodynamics. Dissolution concentrations in typical normal workpiece materials of ceramic tool material at different temperature are then calculated. Diffusion reaction rules in high temperature are also analyzed using Gibbs free energy criterion, it was found that the theoretical results were uniform with the experimental data; and the diffusion solubility ofAl203 ceramic tools is usually much smaller. The order of dissolution of Alfi3 ceramic tools in machining several typical normal workpieces is as follows: Titanium> nickel> steel, At the same cutting condition, when machining cast iron and 35# steel, the wear performance of tools is very different and the wear mechanism should be researched more. The results will provide useful references for tool material design and selection.