SPS烧结诱发自蔓延反应制备Ti<sub>3</sub>SiC<sub>2</sub>-金刚石复合材料

张旺玺; 夏涛; 罗伟; 梁宝岩

doi:10.13394/j.cnki.jgszz.2017.1.0008

SPS烧结诱发自蔓延反应制备Ti₃SiC₂-金刚石复合材料

doi: 10.13394/j.cnki.jgszz.2017.1.0008

张旺玺^1,2,
夏涛^1,2,
罗伟³,
梁宝岩^1,2

1. 中原工学院材料与化工学院, 郑州 450007;
2. 金刚石技术国家地方联合工程实验室, 郑州 451191;
3. 四川化工职业技术学院化学工程系, 四川泸州 646000

基金项目:

河南省高等学校重点科研项目（17A430034）；河南省高校创新团队项目（15IRTSTHN004）；河南省省院科技合作项目（142106000193）；河南省教育厅自然科学研究计划项目资助（14A430007）；河南省科技开放合作项目（142106000051）；郑州市国际科技合作与交流项目（153PGJHZ209）；郑州市人才引育项目（141PRCYY514）。

详细信息

作者简介:
张旺玺,男,1967年出生,教授。研究方向:超硬复合材料。E-mail:zwxlby@126.com

中图分类号: TQ164;TG146
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出版历程
- 修回日期: 2016-12-09
- 网络出版日期: 2022-07-12

Fabricating Ti₃SiC₂-diamond composites by spark plasma sintering induced self-propagation reaction

1. Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou 450007, China;
2. National and Local Joint Laboratory of Engineering of Diamond Technology, Zhengzhou 451191, China;
3. Department of Chemical Engineering, Sichuan Vocational College of Chemical Technology, Luzhou 646000, Sichuan, China

摘要

摘要: 采用3Ti/Si/2C单质粉末为结合剂原料，添加适量的金刚石，通过放电等离子烧结诱发自蔓延反应快速制备Ti₃SiC₂-金刚石复合材料。研究保温时间对复合材料的基体构成和显微形貌的影响。结果表明：3Ti-Si-2C试样经SPS加热，在1170℃左右发生自蔓延反应，形成Ti₃SiC₂相；产物的主要生成相为Ti₃SiC₂、Ti₅Si₃和TiC；在1500℃得到的试样中，Ti₃SiC₂含量较高，原料反应较充分；在1500℃烧结含金刚石质量分数10%的粉末，得到的试样主相为Ti₃SiC₂与TiC，同时含有少量的Si、SiC与金刚石；保温1min后得到的试样中Ti₃SiC₂含量较高，Ti₃SiC₂相发育成板条状晶粒，与金刚石结合良好；保温5min后得到的试样中Ti₃SiC₂含量较低，基体主要由大量的TiC颗粒组成，同时金刚石发生严重石墨化，与基体间形成了较厚的过渡层。
- 复合物构成和结构 /
- 显微形貌 /
- 石墨化 /
- 过渡层
Abstract: Ti₃SiC₂-diamond composites were fabricated by spark plasma sintering induced selfpropagation reaction with 3Ti/Si/2C powders as bonder.The effect of holding time on the phase composition and microstructure of composites were studied.The result shows that Ti₃SiC₂ phase is formed when heated at 1170℃, whose main phases are Ti₃SiC₂, Ti₅Si₃ and TiC.It is also found that Ti₃SiC₂ content in the sample obtained at 1500℃is higher with fully reacted raw materials.The main phase of the sample containing 10wt% diamond is Ti₃SiC₂ and TiC.Additionally, small amounts of Si, SiC and diamond are also obtained.Ti₃SiC₂ content in the sample with holding time of 1min is higher, whose grains is lathe-structured and bonds well with diamond.Ti₃SiC₂ content in the sample with holding time of 5 min is lower, mainly composed of many TiC particles.In addition, the diamond is seriously graphitized, forming thick transition layer.
- composition and structure of composites /
- micro topography /
- graphitize /
- transition layer