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首页> 外文期刊>CERAMICS INTERNATIONAL >Preparing SiC/diamond coatings via chemical vapor deposition of SiC on diamond-coated graphite and their frictional properties
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Preparing SiC/diamond coatings via chemical vapor deposition of SiC on diamond-coated graphite and their frictional properties

机译：通过SiC的化学气相沉积制备SiC /金刚石涂层在金刚石涂层石墨上及其摩擦性能

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摘要

SiC/diamond coatings with excellent frictional properties were successfully prepared using graphite as substrate. Diamond particles with size of 25-38 mu m were firstly bonded on graphite substrate through PVA glue, followed by chemical vapor deposition (CVD) of SiC with varied MTS flow on the diamond -coated graphite substrate to enhance the adhesion of diamond particles. The influence of the MTS flow on the SiC coatings was investigated. The results showed that polycrystalline SiC coating with good crystallinity has been obtained. With MTS flow increasing, the SiC grains feature increased surface roughness and greater sizes of the SiC crystallite resulting from the co -deposition of SiC and carbon with increased carbon containing species. Reciprocating sliding wear tests were conducted to investigate the coefficient of friction. With increasing applied load, while the low -flow specimens showed a remarkable increase in the friction coefficient resulting from degradation of the SiC coatings, the high -flow specimens maintained a relatively low friction coefficient during wear tests indicating strong holding force to diamond particles of the SiC coatings. The reason for low friction coefficient of the high -flow specimens was that GCr15 steel ball was wearing by the SiC/diamond coatings with good affinity to the substrate resulting in a flat flat contact on the contact area. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
机译：使用石墨作为基质成功制备具有优异摩擦性能的SiC /金刚石涂层。尺寸为25-38μm的金刚石颗粒首先通过PVA胶粘合，然后通过SiC的化学气相沉积（CVD），在金刚石涂料的石墨基底上流动，以增强金刚石颗粒的粘附性。研究了MTS流动对SiC涂层的影响。结果表明，已经获得了具有良好结晶度的多晶SiC涂层。随着MTS流量的增加，SiC晶粒具有增加的表面粗糙度和较大的SiC结晶尺寸，由SiC和碳的共同沉积与含碳量增加的含碳物种。进行往复滑动磨损试验以研究摩擦系数。随着施加负荷的增加，虽然低流量样本显示出由SiC涂层的劣化产生的摩擦系数显着增加，但高流量试样在磨损试验期间保持相对低的摩擦系数，表明对金刚石颗粒的强持力SiC涂料。高流量标本的低摩擦系数的原因是GCR15钢球由具有良好对基板具有良好亲和力的SiC /金刚石涂层，导致接触面积的平坦接触。 （c）2015 Elsevier Ltd和Techna Group S.R.L.版权所有。

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  • 来源
    《CERAMICS INTERNATIONAL》 |2016年第3期|共7页
  • 作者

    Yu Shengjie; Chen Zhaofeng; Wang Yang; Luo Ruiying; Wang Jiufeng;

  • 作者单位

    Nanjing Univ Aeronaut &

    Astronaut Coll Mat Sci &

    Technol Int Lab Insulat &

    Energy Efficiency Mat Nanjing 210016 Jiangsu Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Coll Mat Sci &

    Technol Int Lab Insulat &

    Energy Efficiency Mat Nanjing 210016 Jiangsu Peoples R China;

    Nanjing Univ Aeronaut &

    Astronaut Coll Mat Sci &

    Technol Int Lab Insulat &

    Energy Efficiency Mat Nanjing 210016 Jiangsu Peoples R China;

    Beijing Univ Aeronaut &

    Astronaut Sch Phys &

    Nucl Energy Engn Ctr Mat Phys &

    Chem Beijing 100191 Peoples R China;

    Suzhou Superlong Aviat Heat Resistance Mat Techno Suzhou 215400 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 陶瓷工业;硅酸盐工业;
  • 关键词

    Composites; Surfaces; Friction; SiC; Diamond particle;

    机译：复合材料;表面;摩擦;SIC;金刚石颗粒;

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