以微米级W粉和碳纳米管(CNTs)为原料, 采用放电等离子烧结(SPS)技术制备了钨基复合材料, 研究和分析了CNTs对W显微组织结构和室温力学性能的影响. 研究表明, 在SPS过程中, CNTs与W发生原位反应生成W2C,一方面活化了W的晶格, 促进了W的烧结致密化, 另一方面, W2C的形成 消耗了部分烧结驱动力, 有效延缓了W的晶粒长大. 当CNTs的加入量为0.5%时,可获得平均晶粒尺寸为4 μm, 相对密度大于99%, 抗弯强度和硬度分别为1353.90 MPa和488.4 HV的钨基复合材料.
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