Microstructure and high-temperature oxidation behavior of Ti3SiC2/MoSi2 composite coatings prepared by spark plasma sintering

被引：0

作者：

He, Jiahua ^{[1
]}

Zhao, Dui ^{[1
]}

Chen, Jian ^{[1
]}

Lu, Shuaidan ^{[1
]}

Shao, Wenting ^{[1
]}

Liu, Yunzi ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Mat Sci & Chem Engn, Xian 710021, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2025年 / 60卷 / 01期

基金：

中国国家自然科学基金;

关键词：

AL-NB SYSTEM; SI; RESISTANCE; ALLOYS; CORROSION; TI3ALC2; SILICON; PHASES; NBSI2;

D O I：

10.1007/s10853-024-10489-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, Ti3SiC2/MoSi2 composite coatings were fabricated on Nb-Si-based alloys by spark plasma sintering (SPS) technique using Ti3SiC2, Mo, and Si powder mixtures. The effect of Ti3SiC2 powder content on the microstructure and high-temperature isothermal oxidation resistance of these composite coatings was investigated. By increasing Ti3SiC2 powders content from 10 to 50 and 70 vol.%, the volume fractions of Ti3SiC2 and TiC in composite coatings are 7.45, 34.99, and 52.12 vol.%, respectively. The 10% Ti3SiC2/MoSi2 composite coatings can protect Nb-Si-based alloys from isothermal oxidation at 1250 degrees C for 200 h, while adding excessive Ti3SiC2 powders in the coating will induce severe cracking of the scale due to an increase in the brittle TiC phase.

引用

页码：519 / 538

页数：20

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