气压辅助燃烧合成制备Fe-Cr基陶瓷复合耐磨材料硬度的影响因素  

Influence Factors of Hardness for Fe-Cr Based Ceramic Composite Fabricated by Pressure Assisted Combustion Synthesis

作　　者：蒲雪峰 陈龙 汪金林 陶素芬 PU Xuefeng;CHEN Long;WANG Jinlin;TAO Sufen(School of Metallurgical Engineering,Anhui University of Technology,Ma'anshan 243002,China;Key Laboratory of Metallurgical Emission Reduction&Resources Recycling of Ministry of Education,Anhui University of Technology,Ma'anshan 243002,China)

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243002 [2]安徽工业大学冶金减排与资源综合利用教育部重点实验室,安徽马鞍山243002

出　　处：《热加工工艺》2021年第2期92-96,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51704007)。

摘　　要：设计了一组Fe/Cr质量比分别为4、8、12、16,硬质相质量分数分别为8%、16%、24%、32%,压力分别为0.5、1、1.5、2 MPa的3因素4水平的正交实验。利用气压辅助燃烧合成制备了16组Fe-Cr基陶瓷复合耐磨材料,并对这些试样的宏观形貌进行分析;对耐磨层上部、中部、下部的洛氏硬度进行了测定。结果表明:对气压辅助燃烧合成制备的耐磨层硬度影响最大的是Fe/Cr质量比,其次为硬质相质量百分数,最后为压力。为了获得高硬度的同时保证试样性能的均匀性,反应的最佳压力为1.5 MPa,最佳硬质相质量分数为8%,最佳Fe/Cr质量比为12。A set of orthogonal experiments with 3 factors and 4 levels of Fe/Cr mass ratios of 4, 8, 12 and 16, hard phase mass fractions of 8%, 16%, 24% and 32% and pressures of 0.5 MPa, 1 MPa, 1.5 MPa and 2 MPa, respectively were designed.The 16 teams of Fe-Cr based ceramic composite were fabricated by pressure assisted combustion synthesis. The macromorphologies of the samples were analyzed, and the Rockwell hardness of the upper, middle and lower parts of the wear layer were measured. The results show that the mass ratio of Fe/Cr has the maximum effect on the hardness of the wear-resistant layer, followed by the mass percentage of the hard phase, and finally the pressure. In order to obtain high hardness while ensuring the uniformity of the performance for the sample, the optimum pressure of the reaction is of 1.5 MPa;the optimum hard phase mass percentage is 8%;and the optimum Fe/Cr mass ratio is 12.

关 键 词：燃烧合成 Fe/Cr质量比 TiC-TiB2质量分数 压力 硬度 

分 类 号：TB333[一般工业技术—材料科学与工程]