东北大学学报(自然科学版) ›› 2021, Vol. 42 ›› Issue (5): 639-645.DOI: 10.12068/j.issn.1005-3026.2021.05.005

• 材料与冶金 • 上一篇    下一篇

纳米SiC粉末对先驱体陶瓷增材性能的影响

王志永1,2,3, 赵宇辉1,2,4, 赵吉宾1,2, 葛春华5   

  1. (1. 中国科学院 沈阳自动化研究所, 辽宁 沈阳110016; 2. 中国科学院 机器人与智能制造创新研究院, 辽宁 沈阳110169; 3. 东北大学 机械工程与自动化学院, 辽宁 沈阳110819; 4. 中国科学院大学, 北京100049; 5. 辽宁大学 化学院, 辽宁 沈阳110036)
  • 修回日期:2020-07-27 接受日期:2020-07-27 发布日期:2021-05-20
  • 通讯作者: 王志永
  • 作者简介:王志永(1994-),男,黑龙江五常人,东北大学硕士研究生; 赵吉宾(1970-),男,辽宁沈阳人,中国科学院沈阳自动化研究所研究员,博士生导师.
  • 基金资助:
    基金项目;(半空) 基金项目.国家重点研发计划项目(2018YFB1105802); 国家自然科学基金资助项目(51805526).

Effect of Nano-Sized SiC Powder Filler on Additive Manufactured Properties of Precursor-Derived Ceramics

WANG Zhi-yong1,2,3, ZHAO Yu-hui1,2,4, ZHAO Ji-bin1,2, GE Chun-hua5   

  1. 1. Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; 2. Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China; 3. School of Mechanical Engineering and Automation,Northeastern University, Shenyang 110819, China; 4. University of Chinese Academy of Sciences, Beijing 100049, China; 5. College of Chemistry, Liaoning University, Shenyang 110036, China.
  • Revised:2020-07-27 Accepted:2020-07-27 Published:2021-05-20
  • Contact: ZHAO Yu-hui
  • About author:-
  • Supported by:
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摘要: 为了减少先驱体陶瓷在高温裂解过程中裂纹及孔隙的产生,研究了惰性填料纳米SiC粉末对先驱体聚合物、先驱体陶瓷体积收缩率、陶瓷产率的影响.利用热重分析(TGA)、傅里叶转化红外线光谱(FT-IR)、X射线衍射(XRD)等检测手段进行性能分析和结构表征,采用排水法计算先驱体陶瓷体积收缩率.结果表明:先驱体陶瓷的体积收缩率随纳米SiC粉末质量分数的增加而减小,先驱体陶瓷产率随纳米SiC粉末质量分数的增加而增加,当其质量分数为3%时,体积收缩率最小,为73.47%,先驱体陶瓷产率最大,为26.42%;在高温裂解过程中,当升温速率为4℃/min时,先驱体陶瓷表面无明显裂纹且平整光滑.SiC粉末作为惰性填料具有减少先驱体陶瓷体积收缩,提高陶瓷产率的作用,且效果明显.

关键词: 先驱体陶瓷;增材制造;惰性填料;体积收缩;陶瓷产率

Abstract: In order to reduce the generation of cracks and pores during the pyrolysis process of precursor-derived ceramics, the effects of the inert filler of nano-sized SiC powders on the precursor polymer, precursor-derived ceramics volume shrinkage, ceramic yield were studied. The features of precursor-derived ceramics with different mass fractions of SiC filler were examined by TGA, FT-IR and XRD technologies, and the volume shrinkage of the ceramics was measured by drainage method. The results showed that with the increasing mass fraction of SiC powders, the volume shrinkage of the precursor-derived ceramics decreased, while the yield of the ceramics increased. When the mass fraction was 3%, the volume shrinkage rate of the ceramics was down to the minimum value of 73.47% and the yield was up to the maximum one of 26.42%. During the pyrolysis process, when the heating rate was 4℃/min, the surface of the precursor-derived ceramics was flat and smooth without evident cracks. Therefore, the inert filler of the nano-sized SiC powders has great effects on reducing the volume shrinkage of precursor-derived ceramics and increasing the ceramic yield.

Key words: precursor-derived ceramics; additive manufacturing; inert filler; volume shrinkage; ceramic yield

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