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利用固相法制备了ZrMgMo_3O12粉末,利用放电等离子体烧结(SPS)技术制备了致密的低负热膨胀系数热障材料ZrMgMo_3O12陶瓷,讨论了ZrMgMo_3O12结构、表面形貌以及烧结温度对其热膨胀性能和热导率的影响规律.结果表明:烧结温度为750℃时,样品的致密性最好,相对密度高达97%以上;其平均体热膨胀系数为-4.0×10-6/K;从室温到600℃的热导率为1.051.3 W/(m·K).因而,使用SPS烧结技术可以制备出致密度高、热膨胀系数和热导率低的ZrMgMo_3O12陶瓷.
Abstract：ZrMgMo_3O12 powders with negative thermal expansion were synthesized by solid-state reaction method. Spark plasma sintering( SPS) technique was used to prepare ZrMgMo_3O12 ceramic. The influences of structure,surface morphology and sintering temperature of ZrMgMo_3O12 on the properties of thermal expansion and thermal conductivity were discussed. The results showed: the sample sintered at the temperature of 150 ℃ had the highest relative density more than 97%. From room temperature to 600 ℃,the thermal expansion coefficient and the thermal conductivity were- 4. 0 × 10-6/K and 1.05 ~ 1.3 W /( m·K),respectively. Hence,ZrMgMo_3O12 ceramic with high relative density,low thermal expansion coefficient and thermal conductivity could be prepared by SPS technique.
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基本信息:
DOI：10.13705/j.issn.1671-6841.2016675
中图分类号:O551.3
引用信息:
[1]姚宁,刘前霞,李伟杰,等.SPS烧结制备热障材料ZrMgMo_3O_(12)及其热学性能研究[J],2016,48(04):74-79.DOI:10.13705/j.issn.1671-6841.2016675.