Enhancement of high-temperature oxidation resistance of the AgCu-based alloy by in-situ fabricating three-dimensional TiC nanosheet reinforcement

2022 ◽  
pp. 110094
Bo Zhang ◽  
Lixia Zhang ◽  
Zhan Sun ◽  
Qing Chang ◽  
Jicai Feng
AIP Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 015319
Pinghu Chen ◽  
Ruiqing Li ◽  
Ripeng Jiang ◽  
Songsheng Zeng ◽  
Yun Zhang ◽  

2007 ◽  
Vol 546-549 ◽  
pp. 1489-1494 ◽  
Ai Qin Liu ◽  
Shu Suo Li ◽  
Lu Sun ◽  
Ya Fang Han

Nb-16Si-24Ti-6Cr-6Al-2Hf-xB(x=0, 0.5, 1, 2, 4, 6) in situ composites were prepared by arc-melting. Microstructure and the effect of boron on 1250C oxidation resistance of the composites were investigated by scanning electron microscopy(SEM) and X-ray energy disperse spectrum(EDS) as well as X-ray diffraction(XRD). The experimental results showed that the high temperature oxidation resistance of the alloy was remarkably improved by adding proper amount of boron. This may be resulted from several beneficial roles of boron, i.e., boron improves the resistance of Nb5Si3 by solid solution strengthening, inhibits the diffusion of oxygen in the matrix, improves the adherence between the oxide scale and the substrate and increases the cracking resistance of the oxide scale.

2019 ◽  
Vol 27 (2) ◽  
pp. 316-325
刘洪喜 LIU Hong-xi ◽  
赵艳爽 ZHAO Yan-shuang ◽  
张晓伟 ZHANG Xiao-wei ◽  
郝轩宏 HAO Xuan-hong ◽  
张璐璐 ZHANG Lu-lu

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4882
Mengying Chen ◽  
Baoming Shi ◽  
Shiming Huang ◽  
Xuefei Qin ◽  
Yuan Feng ◽  

In order to improve the high temperature oxidation resistance of Ti6Al4V alloy, the in-situ TiN-Ti composite coatings were prepared with Ti-Cr-Ni-Nb powders by plasma transferred arc welding. Nitrogen gas was used as the transport gas and provided N source for the formation reaction of TiN. Microstructure features and high temperature oxidation behaviors of the composite coatings were studied. The phases in the composite coatings were TiN, Ti, CrN, and NiTi. It was clearly observed that in-situ TiN particles were evenly distributed in the Ti matrix. A little Nb atom dissolved in TiN particles, and others dissolved in the Ti matrix. By comparing the curve of Ti6Al4V alloy to that of the composite coatings, the oxidation mass gain of the composite coatings was comparatively less. The oxidation film of the composite coatings was smooth and compact, and no crack was visibly observed. Based on the results of the high temperature tests, the composite coatings exhibited superior high temperature oxidation resistance than Ti6Al4V alloy both at 650 °C and at 850 °C.

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