scholarly journals Microstructure and Oxidation Behavior of Metal-Modified Mo-Si-B Alloys: A Review

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1256
Author(s):  
Laihao Yu ◽  
Fuqiang Shen ◽  
Tao Fu ◽  
Yingyi Zhang ◽  
Kunkun Cui ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxidation Behavior ◽  
Rapid Development ◽  
Nuclear Industry ◽  
Metallic Elements ◽  
Comprehensive Review ◽  
Oxidation Performance ◽  
High Temperature Structural Material ◽  
And Behavior ◽  
Ultra High Temperature

With the rapid development of the nuclear industry and the aerospace field, it is urgent to develop structural materials that can work in ultra-high temperature environments to replace nickel-based alloys. Mo-Si-B alloys are considered to have the most potential for new ultra-high temperature structural material and are favored by researchers. However, the medium-low temperature oxidizability of Mo-Si-B alloys limits their further application. Therefore, this study carried out extensive research and pointed out that alloying is an effective way to solve this problem. This work provided a comprehensive review for the microstructure and oxidation resistance of low silicon and high silicon Mo-Si-B alloys. Moreover, the influence of metallic elements on the microstructure, phase compositions, oxidation kinetics and behavior of Mo-Si-B alloys were also studied systematically. Finally, the modification mechanism of metallic elements was summarized in order to obtain Mo-Si-B alloys with superior oxidation performance.

scholarly journals Microstructure and Oxidation Behavior of Nb-Si-Based Alloys for Ultrahigh Temperature Applications: A Comprehensive Review

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1373
Author(s):  
Fuqiang Shen ◽  
Yingyi Zhang ◽  
Laihao Yu ◽  
Tao Fu ◽  
Jie Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
Oxidation Reaction ◽  
Oxidation Behavior ◽  
Niobium Alloys ◽  
Comprehensive Review ◽  
The Poor ◽  
High Temperature Structural Material ◽  
Ultrahigh Temperature ◽  
Poor Oxidation Resistance

Nb-Si-based superalloys are considered as the most promising high-temperature structural material to replace the Ni-based superalloys. Unfortunately, the poor oxidation resistance is still a major obstacle to the application of Nb-Si-based alloys. Alloying is a promising method to overcome this problem. In this work, the effects of Hf, Cr, Zr, B, and V on the oxidation resistance of Nb-Si-based superalloys were discussed. Furthermore, the microstructure, phase composition, and oxidation characteristics of Nb-Si series alloys were analyzed. The oxidation reaction and failure mechanism of Nb-Si-based alloys were summarized. The significance of this work is to provide some references for further research on high-temperature niobium alloys.

Influence of the Third Element on the High Temperature Oxidation Behavior of γ'-Ni3Al Alloys

2006 ◽  
Vol 522-523 ◽  
pp. 617-624 ◽  
Author(s):  
Shinya Mikuni ◽  
Shigenari Hayashi ◽  
Toshio Narita
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Oxidation Behavior ◽  
Al Alloys ◽  
Temperature Oxidation ◽  
The Third ◽  
Alloy Oxidation ◽  
Oxidation Performance ◽  
Fe Alloys ◽  
High Temperature Oxidation Behavior

The effects of the third element on the high temperature oxidation of γ'-Ni3Al with 5at%X (X=Ti, Ta, Nb, Cu, Co and Fe) alloys were investigated at 1173K in air, and oxidation behavior could be classified into three groups. The first group, comprised of alloys with Cu and Co, showed good oxidation performance with Al2O3 formation. A second group contains Ti, Ta, and Nb as alloying elements, and showed poor oxidation performance. With Fe or Mn addition the alloy oxidation performance was intermediate between the first and second group. The effects of these elements are discussed associate with partitioning factors for each element in the γ'-phase.

scholarly journals Effect of SiC Content on the Ablation and Oxidation Behavior of ZrB2-Based Ultra High Temperature Ceramic Composites

Materials ◽  
2013 ◽  
Vol 6 (5) ◽  
pp. 1730-1744 ◽  
Author(s):  
Ping Hu ◽  
Kaixuan Gui ◽  
Yang Yang ◽  
Shun Dong ◽  
Xinghong Zhang
Keyword(s):  
High Temperature ◽  
Oxidation Behavior ◽  
Ceramic Composites ◽  
Ultra High Temperature

scholarly journals Rare Earth Elements Enhanced the Oxidation Resistance of Mo-Si-Based Alloys for High Temperature Application: A Review

2021 ◽  
Author(s):  
Laihao Yu ◽  
Yingyi Zhang ◽  
Tao Fu ◽  
Jie Wang ◽  
Kunkun Cui ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Rare Earth Elements ◽  
Oxidation Behavior ◽  
Strengthening Mechanism ◽  
Advanced Materials ◽  
Performance Requirements ◽  
Large Numbers ◽  
High Temperature Structural Material ◽  
New Type

Traditional refractory materials such as nickel-based superalloys have been gradually unable to meet the performance requirements of advanced materials. The Mo-Si-based alloy, as a new type of high temperature structural material, has entered the vision of researchers due to its charming high temperature performance characteristics. However, its easy oxidation and even "pesting oxidation" at medium temperatures limit its further applications. In order to solve this problem, researchers have conducted large numbers of experiments and made breakthrough achievements. Based on these research results, the effects of rare earth elements like La, Hf, Ce and Y on the microstructure and oxidation behavior of Mo-Si-based alloys were systematically reviewed in the current work. Meanwhile, this paper also provided an analysis about the strengthening mechanism of rare earth elements on the oxidation behavior for Mo-Si-based alloys after discussing the oxidation process. Furthermore, the research focus about the oxidation protection of Mo-Si-based alloys in the future was prospected to expand the application field.

Synthesis, Characterization and Oxidation Behavior of a Novel Curable Liquid Polysilane Precursors for C/C-SiC Composite

2011 ◽  
Vol 217-218 ◽  
pp. 1673-1678
Author(s):  
Kang Kang Guo ◽  
Yan Bing Liu ◽  
Hui Min Qi ◽  
Fa Rong Huang ◽  
Lei Du
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
1H Nmr ◽  
Oxidation Behavior ◽  
Temperature Resistance ◽  
Unsaturated Bond ◽  
Oxidation Performance ◽  
Ft Ir ◽  
Lower Temperature ◽  
Thermal Stability Of

A novel curable liquid polysilane (CLS) containing reactive unsaturated bond and Si-H was synthesized from dichloromethylvinylsilae, methyldichlorosilae and Na in presence of 18-crown-6 under sonication at relatively lower temperature and its structure was characterized by FT-IR, 1H-NMR. The cure behavior of CLS was investigated by DSC,FTIR. Thermal stability of cured CLS was examined by TGA. The results showed that the cured polysilane exhibits good anti-oxidation performance under high temperature. And the sinted CLS exhibited high temperature resistance and good ceramic formability.

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