Oxidation Resistance of AlPO4 Bonded Ceramic Coating Formed on Titanium Alloy for High-Temperature Applications

被引：18

作者：

Tian, Hong ^{[1
]}

Wang, Ya-Ming ^{[1
]}

Guo, Li-Xin ^{[1
]}

Ouyang, Jia-Hu ^{[1
]}

Zhou, Yu ^{[1
]}

Jia, Dechang ^{[1
]}

Zhang, Yu-Feng ^{[2
]}

机构：

[1] Harbin Inst Technol, Inst Adv Ceram, Harbin 150001, Peoples R China

[2] Bohai Univ, Coll New Energy, Jinzhou 121013, Peoples R China

来源：

International Journal of Applied Ceramic Technology | 2015年 / 12卷 / 03期

关键词：

TPV RADIATOR APPLICATIONS; TI-6AL-4V ALLOY; HIGH EMISSIVITY; MICROSTRUCTURE; BEHAVIOR; COMPOSITES; LAYER;

D O I：

10.1111/ijac.12251

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：

AlPO4 based coatings were prepared on Ti-6Al-2Zr-1Mo-1V titanium alloy using aluminum phosphate as a binder and Al2O3/Cr2O3 based mixing particles as the fillers. The microstructure, phase and chemical composition of the coatings were analyzed by SEM, XRD and EDS techniques. The high temperature infrared emissivity values of coated and uncoated titanium samples were tested. The results show that the coating had a higher infrared emissivity value (>0.8) than titanium substrate (0.15-0.3) in the wide wavelength range of 5-20mm, which is attributed to the uniform dispersion of high emissivity Al2O3 and Cr2O3 particles in the AlPO4 binder matrix. The coated titanium samples exhibited excellent oxidation resistance performance with significantly decreased oxidation rates at 600 and 800 degrees C. The mass gain of the coated sample kept at a low and stable constant of 0.15mg/cm(2), significantly lower than that of titanium substrate (0.54mg/cm(2)) when oxidized at 600 degrees C up to 100h.

引用

页码：614 / 624

页数：11

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