Protective TixSiy coatings for enhanced oxidation resistance of the ɣ-TiAl alloy at 900 °C

2021 ◽  
pp. 127963
Author(s):  
Josefina Crespo-Villegas ◽  
Marjorie Cavarroc ◽  
Stephane Knittel ◽  
Ludvik Martinu ◽  
Jolanta E. Klemberg-Sapieha
Keyword(s):  
Oxidation Resistance ◽  
Tial Alloy ◽  
Enhanced Oxidation

scholarly journals Preparation of MCrAlY–Al2O3 Composite Coatings with Enhanced Oxidation Resistance through a Novel Powder Manufacturing Process

2019 ◽  
Vol 28 (3) ◽  
pp. 433-443 ◽  
Author(s):  
Mingwen Bai ◽  
Bo Song ◽  
Liam Reddy ◽  
Tanvir Hussain
Keyword(s):  
Oxidation Resistance ◽  
Manufacturing Process ◽  
Composite Powder ◽  
Composite Coatings ◽  
Submicron Particles ◽  
Second Phase ◽  
Mcraly Coatings ◽  
Powder Feedstock ◽  
Enhanced Oxidation ◽  
Powder Manufacturing

Abstract MCrAlY–Al2O3 composite coatings were prepared by high-velocity oxygen fuel thermal spraying with bespoke composite powder feedstock for high-temperature applications. Powder processing via a suspension route was employed to achieve a fine dispersion of α-Al2O3 submicron particles on the MCrAlY powder surface. This was, however, compromised by ~ 50% less flowability of the feedstock during spraying. Nevertheless, the novel powder manufacturing process introduced in this study has shown potential as an alternative route to prepare tailored composite powder feedstock for the production of metal matrix composites. In addition, the newly developed MCrAlY–Al2O3 composite coatings exhibited superior oxidation resistance, compared to conventional MCrAlY coatings, with the formation of nearly exclusively Al2O3 scale after isothermal oxidation at 900 °C for 10 h. The addition of α-Al2O3 particles in the MCrAlY coatings as a second phase was found to have promoted the formation of YAG oxides (YxAlyOz) during spraying and also accelerated the outwards diffusion of Al, which resulted in enhanced oxidation resistance.

Oxidation resistance of TiAl alloy improved by hot-pack rolling and cyclic heat treatment

2021 ◽  
pp. 111196
Author(s):  
Tian Shiwei ◽  
He Anrui ◽  
Liu Jianhua ◽  
Zhang Yefei ◽  
Yang Yonggang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Oxidation Resistance ◽  
Tial Alloy ◽  
Cyclic Heat Treatment ◽  
Pack Rolling ◽  
Cyclic Heat ◽  
Hot Pack

scholarly journals Enhanced oxidation resistance of active nanostructures via dynamic size effect

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Yun Liu ◽  
Fan Yang ◽  
Yi Zhang ◽  
Jianping Xiao ◽  
Liang Yu ◽  
...  
Keyword(s):  
Size Effect ◽  
Oxidation Resistance ◽  
Enhanced Oxidation

Synthesis of chemically bonded phosphate ceramic coatings with tailored curing behaviour and enhanced oxidation resistance

2020 ◽  
Vol 46 (12) ◽  
pp. 20448-20455
Author(s):  
Mei Yang ◽  
Fujiao Liu ◽  
Zhixing Guo ◽  
Bing Han ◽  
Xia Luo
Keyword(s):  
Oxidation Resistance ◽  
Ceramic Coatings ◽  
Enhanced Oxidation

Constructing self-supplying Al2O3-Y2O3 coating for the γ-TiAl alloy with enhanced oxidation protective ability

2020 ◽  
Vol 522 ◽  
pp. 146439
Author(s):  
Hao Lin ◽  
Wenping Liang ◽  
Qiang Miao ◽  
Shan Li ◽  
Zheng Ding ◽  
...  
Keyword(s):  
Tial Alloy ◽  
Protective Ability ◽  
Enhanced Oxidation ◽  
Y2o3 Coating
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