金刚石与磨料磨具工程2017，Vol.37Issue(5)：35-40,6.DOI:10.13394/j.cnki.jgszz.2017.5.0006
预合金粉结合剂真空无压烧结制备金刚石工具
Preparing diamond tool at vacuum pressureless sintering with pre-alloy powder binder
摘要
Abstract
Diamond tool binder samples were prepared using vacuum and pressureless sintering with Fe40Cu40Co20 and Cu80Sn20 pre-alloy powder as raw material.The samples were compared with those sintered at the same process and elements but with mixed metal powder.The hardness,density and matrix morphology of matrices with pre-alloy powder and mixed metal powder were compared and analyzed using Rockwell hardness tester,Archimedes Drainage Act and SEM,respectively.Results show that as temperature increases,the density and hardness of both matrices increase first and then decrease,with the maximum value at 860 ℃.The matrix sintered with pre-alloy powder at 860 ℃ performs a density increase of 5％ and a hardness increase of HRB 7 MPa,compared with those of the matrix sintered with mixed metal powder.In conclusion,the pre-alloyed powder requires lower temperature and less time compared with the mixed metal powder to achieve the same performance.Therefore,it can avoid damages to the strength and quality of diamond.关键词
预合金粉/真空无压烧结/硬度/致密度Key words
pre-alloyed powder/vacuum pressureless sintering/hardness/density分类
化学化工引用本文复制引用
侯明,郭胜惠,高冀芸,杨黎,彭金辉,王梁,叶小磊,梁宝岩..预合金粉结合剂真空无压烧结制备金刚石工具[J].金刚石与磨料磨具工程,2017,37(5):35-40,6.基金项目
国家自然科学基金(No.51604134) （No.51604134）
国家国际科技合作项目(No.2015DFR50620) （No.2015DFR50620）
云南省教育厅科学研究基金(No.2016ZZX040) （No.2016ZZX040）
云南省应用基础研究计划(201701YE00021) （201701YE00021）
云南省科技领军人才(No.2013HA002). （No.2013HA002）
