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.
作者
张琰琰
程晓农
黎振兴
杨娟
徐凯
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)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
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)
