Preparation of a high spectral emissivity TaSi2-based hybrid coating on SiOC-modified carbon-bonded carbon fiber composite by a flash sintering method

被引：24

作者：

Du, Bin ^{[1
]}

Zhou, Shitong ^{[1
]}

Zhang, Xinghong ^{[1
]}

Hong, Changqing ^{[1
]}

Qu, Qiang ^{[2
]}

机构：

[1] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Heilongjiang, Peoples R China

[2] China Acad Launch Vehicle Technol, Beijing 100076, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2018年 / 350卷

基金：

中国国家自然科学基金;

关键词：

High spectral emissivity; TaSi2- and MoSi2-based coatings; SiOC/CBCF composites; OXIDATION PROTECTION; SPRAY DEPOSITION; INSULATIONS; TEMPERATURE; RESISTANCE; BEHAVIOR;

D O I：

10.1016/j.surfcoat.2018.07.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The most recent and innovative metal disilicide-based hybrid coatings are used for protecting carbon fiber-based composites in aerospace application. Here, we investigate a high emissivity coating on SiOC-modified carbon bonded carbon fiber composites (SiOC/CBCF) for thermal protection material. Both tantalum silicide (TaSi2) and molybdenum silicide (MoSi2)-based coatings are prepared on SiOC/CBCF composites using flash sintering method, and the emissivity value of MoSi2-based coating is higher than that of TaSi2-based coating. Significantly, improvement the density of the coating has a positive role on emissivity resulting in MoSi2-based coating increases about 7.2% at 400 degrees C and 11.5% at 1000 degrees C, respectively; TaSi2-based coating increases about 15.4% at 400 degrees C and 2.6% at 1000 degrees C. After exposure to 1500 degrees C for 60 min in air, the emissivity values of the coated samples are also investigated.

引用

页码：146 / 153

页数：8

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