CeO_(2)含量、渗硼温度和时间对H13钢渗硼层组织和性能的影响  

Effects of CeO_(2) Content,Boronizing Temperature and Time on Microstructure and Properties of H13 Steel Boronized Layer

作　　者：张炎威 郑权 凡宇 梅顺齐[1] LYGDENOV Burial GURYEV Alexey ZHANG Yanwei;ZHENG Quan;FANYu;MEI Shunqi;LYGDENOV Burial;GURYEV Alexey(Wuhan Textile University,Hubei Key Laboratory of Digital Textile Equipment,Wuhan 430073,China;Department of Manufacturing Engineering,East-Siberian State University of Technology and Management,Ulan-Ude670013,Russia;Zhejiang Xinchang Sanxiong Bearing Co.,Ltd.,Shaoxing 312500,China;Department of Manufacturing Engineering,Polzunov Altai State Technical University,Barnaul 656038,Russia;Zhejiang Taitan Co.,Ltd.,Shaoxing 312500,China)

机构地区：[1]武汉纺织大学,湖北省数字化纺织装备重点实验室,武汉430073 [2]俄罗斯国立东西伯利亚技术与管理大学制造工程系,乌兰乌德670013 [3]浙江新昌三雄轴承有限公司,绍兴312500 [4]俄罗斯国立阿尔泰技术大学制造工程系,巴尔瑙尔656038 [5]浙江泰坦股份有限公司,绍兴312500

出　　处：《机械工程材料》2021年第7期22-26,共5页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(51175385);湖北省科技计划项目(2018AAA036)。

摘　　要：对H13钢表面进行渗硼处理,研究了稀土CeO_(2)含量(0,2%,4%,6%,质量分数)、渗硼温度(850,900,950,1000℃)及渗硼时间(2,3,4,5 h)对渗硼层组织和性能的影响。结果表明:随着渗硼温度的升高和时间的延长,渗硼层厚度先逐渐增大再趋于平缓;当CeO_(2)含量在0-2%时,硼原子的扩散激活能变化不大,从2%增大到4%时显著降低,且渗硼层厚度增加较快,从4%增大到6%时,扩散激活能基本不变,渗硼层厚度增加较慢;在渗硼温度为950℃,渗硼时间为4 h,CeO_(2)含量为4%条件下,渗硼层的孔洞最少,组织最致密,硬度最大,耐磨性最好。The surface of H13 steel was boronized, and the effect of the content of rare earth CeO_(2)(0, 2 wt%, 4 wt%, 6 wt%), boronizing temperature(850, 900, 950, 1 000 ℃) and boronizing time(2, 3, 4, 5 h) on the microstructure and properties of the boronized layer were studied. The results show that the thickness of the boronized layer increased first and then tended to be stable with increasing boronizing temperature and time. When the content of CeO_(2) increased from 0 to 2 wt%, the diffusion activation energy of boron atoms did not change much, and decreased obviously from 2 wt% to 4 wt%, and the thickness of the boronized layer increased faster. The content of CeO_(2) increased from 4 wt% to 6 wt%, the diffusion activation energy basically unchanged, the thickness of the boronized layer increased slower. The boronized layer with 4 wt% CeO_(2) formed at 950 ℃ for 4 h had the least holes, the most dense microstructure, the highest hardness, and the best wear resistance.

关 键 词：H13钢 CeO_(2)含量 渗硼温度 渗硼时间 硬度 

分 类 号：TG161[金属学及工艺—热处理]