Improvement of high-temperature oxidation resistance of titanium-based alloy by sol-gel method

被引：21
|
作者：
Zhang, X. J. [1 ]
Gao, Y. H. [1 ]
Ren, B. Y. [1 ]
Tsubaki, N. [2 ]
机构：
[1] Shenyang Univ Chem Technol, Coll Appl Chem, Shenyang 110142, Peoples R China
[2] Toyama Univ, Sch Engn, Dept Appl Chem, Toyama 9308555, Japan
来源：
JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 06期
关键词：
TIAL-BASED ALLOY; SUBSEQUENT INTERDIFFUSION TREATMENT; SPUTTERING AL FILM; AL2O3; FILM; BEHAVIOR; PROTECTION; COATINGS; OXYGEN; LOAD; NB;
D O I：
10.1007/s10853-009-4138-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sol-gel dip coating of SiO(2) was applied on a TiAl-based alloy, and subsequent heat treatment was performed. XRD and SEM/EDS analysis revealed that an amorphous silica coating was formed on the alloy. Isothermal oxidation and cyclic oxidation at 600 and 700 A degrees C in static air of the specimens with or without coating were performed to investigate the effect of the SiO(2) coating on the oxidation behavior of the alloy by thermogravimetry. The average parabolic rate constants of the coated specimens were greatly reduced due to the presence of the coating. Severe cracks and spallation of the scales were observed on the blank specimens, but not on the coated ones. The oxide scales formed on the uncoated specimens were stratified. For the coated samples, a mixture layer of rutile TiO(2) and Al(2)O(3) occurred beneath the applied film.
引用
收藏
页码：1622 / 1628
页数：7
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