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Effect of Nd2O3 on Microstructure and Oxidation Behavior of TaCr2 alloys
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    Abstract:

    TaCr<sub>2</sub>-xNd<sub>2</sub>O<sub>3</sub> (x=0, 0.125, 0.25, 0.5 and 0.75at%) alloys have been prepared by mechanical alloying + hot pressing. The effects of Nd<sub>2</sub>O<sub>3</sub> on the microstructure and oxidation resistance of te TaCr<sub>2</sub> alloy have been investigated. The results show that Nd<sub>2</sub>O<sub>3</sub> mainly exists in Ta solid solution, and has no significant effect on the phase components and crystal form of the alloy. The alloys are composed of TaCr<sub>2</sub>, a small amount of Ta-rich phase and Cr solid solution. The addition of Nd<sub>2</sub>O<sub>3</sub> reduced the oxidation weight gain of TaCr<sub>2 </sub>alloy at 1200 °C; the oxide film showed a discontinuous multilayer distribution, and Nd<sub>2</sub>O<sub>3</sub> promoted the stratification of the oxide phase.

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[Yao Jing, Lu Shiqiang, Xiao Xuan, Li Guifa, Deng Liping, Chen Dezhi. Effect of Nd2O3 on Microstructure and Oxidation Behavior of TaCr2 alloys[J]. Rare Metal Materials and Engineering,2019,48(3):1015~1021.]
DOI:10.12442/j. issn.1002-185X.20181067

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History
  • Received:October 20,2018
  • Revised:November 13,2018
  • Adopted:December 05,2018
  • Online: April 10,2019
  • Published: