Revealing anti-oxidation mechanisms of titanium composite materials by detailed characterization of scale phase constitutions

被引：14
作者：
Chen, Xin [1 ,2 ]
An, Qi [2 ]
Jiang, Shan [2 ]
Jiao, Yang [3 ]
Huang, Lujun [1 ,2 ]
Geng, Lin [1 ,2 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[3] Harbin Inst Technol, Ctr Anal Measurement & Comp, Harbin 150001, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 192卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Titanium matrix composites; Evolution of oxides; Anti-oxidation mechanisms; First-principles calculations; HIGH-TEMPERATURE OXIDATION; CYCLIC OXIDATION; MATRIX COMPOSITES; TI-6AL-4V ALLOY; BEHAVIOR; COATINGS; MICROSTRUCTURES; APPROXIMATION; EVOLUTION;
D O I：
10.1016/j.corsci.2021.109845
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To understand the oxidation mechanisms of (TiC+TiB+(TiZr)(5)Si-3)/TA15 composites and elucidate their superior oxidation resistance, a systematically microstructural characterization of the oxide scale was investigated. The results showed that the oxide scale was consisted of the outer R-TiO2+Al2O3 mixed layer, inner gradient R-TiO2 layer, dispersive amorphous/nanocrystalline SiO2 and interfacial Ti2AlN+Ti2N layer. Such multi-layered structure could efficiently hinder the penetration of oxygen and alleviate the thermal stress generated during cyclic oxidation. Moreover, the thermodynamic stabilities of different Ti-O compounds were calculated by the first principles method, which revealed the evolution of Ti-O compounds.
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页数：12
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