化工进展2018，Vol.37Issue(4)：1529-1535,7.DOI:10.16085/j.issn.1000-6613.2017-1263
微波强化烧结制备铁钴基金刚石锯片刀头
Fabrication of the diamond sawblade bits with Fe-Co metallic matrix by microwave strengthened sintering
摘要
Abstract
The iron-cobalt(Fe-Co)metallic matrix diamond sawblade bits with low cobalt were successfully fabricated through microwave sintering. The microwave-absorbing characteristic of the designed recipe compacts were estimated on an electromagnetic characteristic test system by applying the cylindrical resonant cavity perturbation method. The microwave sintering procedure was designed according to the heating characteristics of the material in the microwave field. The microstructure information and mechanical properties were investigated and compared by using scanning electron microscope(SEM),relative density and hardness tests in case of the microwave and conventional sintering method. The result showed the relative density and hardness reached 96.63% and 99.4HRB respectively for the low cobalt samples sintered at 850℃. In addition,the microstructure was still uniform when the samples was under microwave sintered at the temperature rate of 32.5℃/min. Compared with the conventional sintering method,on the premise of comparative mechanical properties,microwave strengthening sintering can significantly shorten the total sintering time and decrease the sintering temperature below 900℃ to achieve similar mechanical properties of the product. The microwave heating technology shows an excellent application prospect in the field of the strengthen sintering for the metallic matrix diamond tool bits.关键词
粉体/烧结/热传导/力学性能Key words
powders/sintering/heat conduction/mechanical properties分类
机械制造引用本文复制引用
高冀芸,刘晨辉,王访,杨黎,贾丽娟,段开娇,刘天成,郭雨..微波强化烧结制备铁钴基金刚石锯片刀头[J].化工进展,2018,37(4):1529-1535,7.基金项目
国家自然科学基金(51604134,51568068)、云南民族大学校内青年基金科研项目(2017QN06)、云南省应用基础研究计划青年项目(201701YE00021)、国家国际科技合作项目(2015DFR50620)、云南省教育厅科学研究基金 (2016ZZX040)及云南民族大学大学生创新创业训练计划(2017JWC-DC-39)项目. （51604134,51568068）
