Fabrication of FeAl-WC Composite Using Mechanical Alloying
Fabrication of FeAl-WC Composite Using Mechanical Alloying
复制标题
采用机械合金化法制备 FeAl-WC 复合材料
DOI：
10.2497/jjspm.48.986
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
T. Nishio
中科院分区：
文献类型：
--
作者：
A. Matsumoto;K. Kobayashi;K. Ozaki;T. Nishio
FeAl-WC复合材料是一种有潜力的新型硬质金属。在氩气气氛下，在行星球磨机上合成了铁粉。由FeAl和WC粉末组成的粉末混合物在自动搅拌器中干燥混合。采用真空脉冲电流烧结技术，在40MPa压力下对FeAl-0-65vol%WC复合材料进行了固结。随着WC含量的增加，复合材料的维氏硬度增加，FeAl-50vol%WC复合材料的维氏硬度达到1075Hv。在30vol%WC时，复合材料的横向断裂强度约为1.8 MPa，超过50vol% WC时，横向断裂强度骤降至1.1 GPa。1173K氧化试验表明，FeAl-50vol%WC的增重是Co-50vol%WC的七分之一。
FeAl-WC composite was proposed as a potentially novel hard metal. FeAl powder was synthesized in a planetary ball mill under an argon atmosphere. Powder mixtures consisting of FeAl and WC powders were dry blended in an automatic agitator. FeAl-0-65vol%WC composites were consolidated by pulse current sintering in a vacuum under the pressure application of 40MPa. Vickers hardness of the obtained composites increased with increasing WC content and 1075Hv was obtained for FeAl-50vol%WC composite. Transverse rupture strength of the composites was measured to be about 1.8 MPa up to 30vol%WC and abruptly decreased to 1.1 GPa for more than 50vol% WC. Oxidation test at 1173K exhibited weight gain of FeAl-50vol%WC was a one-seventh as much as that of Co-50vol%WC.