论文部分内容阅读
采用无压烧结制备韧性Zn Al颗粒增强Fe基非晶复合材料,利用X射线衍射仪、扫描电镜、差热分析仪和激光闪射热导率测试仪分析了复合材料的结构、热稳定性及导热性能。结果表明:在过冷液相区内无压烧结可得到致密的Zn Al/Fe基非晶复合材料;Zn Al的引入没有影响Fe基非晶基体的本质;烧结过程中没有界面反应相生成;复合材料的热稳定性有所降低,但降低幅度不大;在298~423 K范围内,复合材料比Fe基非晶合金有更低的热传导系数,其热扩散系数随温度的升高变化不大,表明材料具有较好的保温性能。
Non-pressure sintering was used to prepare the toughness Zn Al particles reinforced Fe-based amorphous composites. The structure, thermal stability and thermal conductivity of the composites were analyzed by X-ray diffraction, scanning electron microscopy, differential thermal analyzer and laser flash thermal conductivity tester performance. The results show that compact ZnAl / Fe based amorphous composites can be obtained by pressureless sintering in the supercooled liquid region. The introduction of ZnAl has no effect on the nature of the Fe-based amorphous matrix. There is no interfacial reaction phase during the sintering process. The thermal stability of the composites was reduced, but the reduction was not large. The composite materials had lower thermal conductivity than the Fe-based amorphous alloys in the range of 298 ~ 423 K, and the thermal diffusivities of the composites did not change with the increase of the temperature Large, indicating that the material has good insulation properties.