Formation and oxidation resistance of MoSi2 coating for Nb-Si based alloy prepared by slurry sintering method

被引：20

作者：

Li, Longfei ^{[1
]}

Guo, Xiping ^{[1
]}

Qiao, Yanqiang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 938卷

基金：

中国国家自然科学基金;

关键词：

Nb-Si based alloy; Slurry sintering; Oxidation behaviors; MoSi2; coating; AL; TI; MICROSTRUCTURE; BEHAVIOR; MO; PROTECTION; HF; COMPOSITES; SUBSTRATE;

D O I：

10.1016/j.jallcom.2022.168456

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The high-temperature oxidation resistant MoSi2 intermetallic coatings have been successfully prepared on the Nb-Si based alloy by slurry sintering method. The heating rate before the sintering temperature is reached has an obvious influence on the density and interface structure of the coatings. The coating prepared at a heating rate of 10 degrees C/min is the densest, with a porosity about 18.4 area%, and has a good adhesion strength of 22.5 MPa. After oxidation at 1250 celcius for 10 h, the coating exhibits multi-layer structure consisted of an SiO2 scale, an MoSi2 layer, an inner oxidation layer and an (Nb,X)5Si3 transitional layer from the outer to the inner.(c) 2022 Elsevier B.V. All rights reserved.

引用

页数：12

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