烧结工艺对氧化铝-铝金属陶瓷材料性能的影响
发布时间:2018-03-13 18:16
本文选题:金属陶瓷材料 切入点:烧结工艺 出处:《材料热处理学报》2015年02期 论文类型:期刊论文
【摘要】:利用粉末冶金方法制备氧化铝-铝金属陶瓷材料,研究其烧结工艺对其性能影响。结果表明,烧结温度从700℃逐渐升到1000℃且保温1 h的条件下,Al2O3/Al金属陶瓷的显微结构致密化程度逐渐降低,硬度逐渐降低,电阻率逐渐升高。在显微结构中颗粒呈连续分布且较大的为金属Al,颗粒呈不连续分布较且细小的为Al2O3。在700℃温度下,随保温时间延长,其显微结构组织越致密,硬度越高,电阻率越低。在700℃烧结3 h制备得到25 mass%Al2O3/Al金属陶瓷,其显微结构致密化程度较高,硬度为2203 HV,电阻率为0.0159Ω·m。
[Abstract]:Alumina-aluminum cermet materials were prepared by powder metallurgy. The effects of sintering technology on the properties of the materials were studied. The densification degree of microstructure and hardness of Al _ 2O _ 3 / Al cermet decreased gradually when sintering temperature increased from 700 鈩,
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