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所属单位：材料科学与技术学院

发表刊物：INFRARED PHYSICS & TECHNOLOGY

关键字：Cr39Ni7C Inorganic silicate Low infrared emissivity Heat-resistant property

摘要：Low infrared emissivity coatings with good heat-resistant property are prepared by using Cr39Ni7C powders and inorganic silicate as filler and binder, respectively. The effects of ball-milling time and heating temperatures on both the microstructure and crystallinity of Cr39Ni7C powders as well as the infrared emissivity of the coatings are detailedly explored. The results show that large spherical Cr39Ni7C particles change into smaller flakey particles gradually with ball-milling time extending to 70 h. Meanwhile, crystallinity of Cr39Ni7C powders enhances with temperature increasing from 300 degrees C to 700 degrees C. Contributed by the small flakey particles and enhanced crystallinity, the Cr39Ni7C coating could possess low emissivity value of 0.59 at room temperature, and it further reduces to 0.55 with the temperature rising up to 600 degrees C. Additionally, good thermal stability is obtained due to the Si-O-Si space network structure and the Si-O-M bonding between the coatings and substrates.

ISSN号：1350-4495

是否译文：否

发表时间：2018-08-01

合写作者：徐国跃,F70206595,谭淑娟,徐诚,Zhang, Yanting,Zhang, Jianchao

通讯作者：F70206595,王长波,刘初阳