Mg/Al多层复合板截面固体渗硼工艺研究  

Study on Solid Boronizing Process for Mg/Al Multi-layer Composite Plate Cross Section

作　　者：张建 杜华云[1] 卫英慧[1,2] 侯利锋 刘宝胜[2] ZHANG Jian;DU Huayun;WEI Yinghui;HOU Lifeng;LIU Baosheng(School of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《热加工工艺》2023年第6期75-77,82,共4页Hot Working Technology

基　　金：山西省重大专项资助项目(20181101014);山西省自然科学基金资助项目(201801D121090);山西省高校科技创新资助项目(2017115)。

摘　　要：对比了两种工艺条件下的Mg/Al多层复合板截面固体渗硼试验。采用X射线衍射仪(XRD)和扫面电镜(SEM)分析了Mg/Al多层复合板渗硼后的物相组成和组织形貌,采用显微硬度计对渗层进行硬度测试,对基体和表面渗层进行电化学极化曲线测试。结果表明,渗硼10 h,工艺为630℃得到的渗层比600℃得到的渗层效果好,其渗层主要由MgAlBO_(4)、B_(2)O_(3)和AlB_(12)等物相组成,厚度约为20μm,渗硼后试样的耐蚀性和硬度均明显提高,渗层显微硬度值最高达到278 HV。The solid boronizing tests of Mg/Al multilayer composite plate under two conditions were compared.The X-ray diffractometer(XRD)and scanning electron microscopy(SEM)were used to analyze the phase composition and the microstructure of the Mg/Al multilayer composite plate after boronizing.The hardness of the infiltrated layer was tested using microhardness tester.Electrochemical polarization curves were tested on the substrate and the surface layer.The results show that the infiltration layer obtained at 630℃ for 10 h is better than the infiltration layer obtained at 600℃ for 10 h.The infiltration layer is mainly composed of phases such as MgAlBO_(4),B_(2)O_(3) and AlB_(12),and the thickness is about 20μm.The corrosion resistance and hardness of the samples are significantly improved,and the microhardness of the infiltrated layer is as high as 278 HV.

关 键 词：Mg/Al多层复合板 固体渗硼 组成 显微硬度 

分 类 号：TB331[一般工业技术—材料科学与工程] TG156.87[金属学及工艺—热处理]