以Mo/Al/B_(2)O_(3)/金刚石粉体热爆反应体系在金刚石颗粒表面形成镀覆涂层  

Forming a Coating on the Surface of Diamond Particles from Thermal Explosion Reaction System of Mo/Al/B_(2)O_(3)/Diamond Powder

作　　者：史冬丽 马尧 李涛 梁宝岩[2] SHI Dongli;MA Yao;LI Tao;LIANG Baoyan(Zhengzhou Bolisen New Material Technology Co.,Ltd.,Zhengzhou 450010,China;Materials and Chemical Engineering School,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]郑州伯利森新材料科技有限公司,河南郑州450001 [2]中原工学院材料与化工学院,河南郑州450007

出　　处：《工业技术创新》2022年第5期47-52,80,共7页Industrial Technology Innovation

基　　金：国家自然科学基金(51864028)。

摘　　要：以Mo/Al/B_(2)O_(3)/金刚石粉体为热爆反应体系,在金刚石颗粒表面形成镀覆涂层,采用X射线衍射(XRD)研究热爆反应产物和金刚石颗粒的物相组成,采用扫描电镜(SEM)观察金刚石颗粒表面的显微形貌。研究发现:热爆反应产物易于粉碎,易于将金刚石颗粒与结合剂分离;随着金刚石含量的增加,试样膨胀逐渐加剧,在高纯Ar气保护下,基体会形成以MoAlB为主相的材料;热爆反应会在金刚石表面形成由Al、Mo_(2)C、Al_(2)O_(3)和AlMo_(3)组成的多元涂层,涂层由大量平均粒径为2 μm的晶粒组成。总体而言,当金刚石含量较低(10%和20%)时,产物中金刚石颗粒表面镀覆良好。Mo/Al/B_(2)O_(3)/diamond powder was used as a thermal explosion reaction system to form a coating on the surface of diamond particles.The phase compositions of the thermal explosion reaction products and diamond particles were studied by X-ray diffraction (XRD),and the micro-morphology of diamond particles was observed by scanning electron microscope (SEM).Results and Findings:The thermal explosion reaction products are easy to be crushed and the diamond particles are easy to be separated from the bonding agent.With the increase of diamond content,the sample expansion gradually intensifies;under the protection of high-purity Ar gas,the matrix will form a material with MoAlB as the main phase.The thermal explosion reaction will form a multi-component coating composed of Al,Mo_(2)C,Al_(2)O_(3)and AlMo_(3)on the diamond surface;the coating is composed of a large number of grains with an average particle size of 2 μm.Generally,when the diamond content is low (10% and 20%),the surface of diamond particles in the products is well coated.

关 键 词：镀覆涂层 金刚石 热爆反应 MoAlB 基体 

分 类 号：TG175.6[金属学及工艺—金属表面处理]