Preparation and application of ZrB2-SiCw composite powder for corrosion resistance improvement in Al2O3-ZrO2-C slide plate materials

被引：24

作者：

Ban, Jinjin ^{[1
]}

Zhou, Chaojie ^{[2
]}

Feng, Long ^{[1
]}

Jia, Quanli ^{[1
]}

Liu, Xinhong ^{[1
]}

Hu, Junhua ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Mat Sci & Engn, 75 Daxue Rd, Zhengzhou 450052, Peoples R China

[2] Henan Inst Prod Qual Supervis & Inspect, 17 Dongming Rd, Zhengzhou 450004, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 07期

基金：

中国国家自然科学基金;

关键词：

ZrB2-SiCw; Zircon; Activated carbon; Al2O3-ZrO2-C slide plate; Corrosion resistance; IN-SITU SYNTHESIS; SOL-GEL; ZRB2; REDUCTION; ZIRCONIUM; NANOCOMPOSITE; DECOMPOSITION; NANOPARTICLES; EVOLUTION; OXIDATION;

D O I：

10.1016/j.ceramint.2019.12.255

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ZrB2-SiCw (w-whisker) composite powders were synthesized by a microwave-assisted carbo/borothermal reduction method under argon atmosphere using zircon, boric acid, and activated carbon as starting materials. The optimized ZrB2-SiCw composite powder was obtained by adjusting heating temperature and amounts of boric acid and activated carbon. Further, the effect of the optimized ZrB2-SiCw composite powder addition on corrosion resistance of the Al2O3-ZrO2-C slide plate material against O-2 and Ca-treated steel was investigated. The results showed that the relative content of ZrB2-SiCw increased with increasing temperature. The excess of boric acid favored the formation of the ZrB2-SiCw, and the optimum amount of boric acid was overdosed to 30-45 wt %. The corrosion resistance and thermo-mechanical properties of Al2O3-ZrO2-C slide plate material could be improved effectively with 6 wt% ZrB2-SiCw composite powder addition, which was attributed to the excellent oxidation and corrosion resistance of ZrB2-SiCw composite powder. In addition, ZrB2 -SiCw could confer excellent thermal shock resistance and reduce the generation of cracks, ultimately preventing corrosive media from infiltrating into slide plates, further increasing corrosion resistance of the plates.

引用

页码：9817 / 9825

页数：9

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