粉末冶金法制备SiC_p/Al_2W_3O_(12)/Al复合材料及其热膨胀性能  

Thermal Expansion of SiC_p/Al_2W_3O_(12)/Al Composite Materials Fabricated by P/M Technology

作　　者：张琰琰[1] 程晓农[1] 黎振兴[1] 杨娟[1] 徐凯[1] 陈敏 ZHANG Yanyan CHENG Xiaonong LI Zhenxing YANG Juan XU Kai CHEN Min(School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China Jiangsu H.Y. Times Electronic Technology Co. , Ltd. , Yixing 214200, China)

机构地区：[1]江苏大学材料科学与工程学院,江苏镇江212013 [2]江苏时代华宜电子科技有限公司,江苏宜兴214200

出　　处：《材料科学与工程学报》2017年第2期257-261,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51272093);江苏省科技成果转化专项资金资助项目(BA2014070)

摘　　要：通过添加适量的Al_2W_3O_(12)负热膨胀粉体来优化碳化硅颗粒增强铝基(SiC_p/Al)复合材料的热膨胀系数。实验采用固相法制备负热膨胀性能的Al_2W_3O_(12)粉体,并按10%,20%,30%的体积比添加至SiC_p/Al复合粉体中,利用粉末冶金工艺制备SiC_p/Al_2W_3O_(12)/Al复合材料。实验结果表明:制备的复合材料组织分布均匀,致密度良好。室温到200℃内,在Al基体质量分数不变的前提下,Al_2W_3O_(12)的加入有效降低了复合材料的热膨胀系数。Suitable amount of negative thermal expansion materials Al2W3O12 was added to optimize the thermal expansion coefficient of SiCp/Al composite materials. Negative thermal expansion Al2W3O12 powders were firstly prepared by solid state reaction. By adding 10%, 20%, 30% （volume ratio） Al2W3O12 to the SiCp/ Al composite powders, SiCp/Al2W3O12/Al composites were fabricated by powder metallurgy （P/M） technology. The experimental results showed that the composites with uniform organization and relatively high density were obtained. In the temperature range from room temperature to 200℃, the thermal expansion coefficient of the composites with the same mass ratio of Al was effectively reduced by increasing the amount of Al2W3O12.

关 键 词：负热膨胀材料 Al2W3O12 SICP/AL 热膨胀系数 

分 类 号：TB333[一般工业技术—材料科学与工程]