Home > Archive>Volume 51, Issue 4, 2021 >136-139. DOI:10.12044/j.issn.1007-2330.2021.04.017
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Preparation， Microstructure and Property Analysis of Oxidation Resistant Coating for New Low-density Nb-Ti alloy
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Aerospace Research Institute of Materials & Processing Technology， Beijing 100076

Clc Number:

TG442

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    Abstract:

    According to the requirements of oxidation resistance of new low-density Nb-Ti alloy， Si-Cr-Ti oxidation resistant coating was studied， focusing on the changes of oxidation resistance and microstructure of the prepared coating before and after oxidation. The results show that coating life is more than 10 hours at 1 200 ℃， and the thermal shock resistance of coating is good； A diffusion layer is formed between coating and substrate to ensure bonding strength of coating； In high temperature atmospheric environment， a glassy SiO2 layer which can isolate oxygen and fill the gap is formed on surface layer of coating， so it has good oxidation resistance.

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History
  • Received:May 14,2021
  • Revised:August 05,2021
  • Adopted:July 26,2021
  • Online: August 25,2021
  • Published: August 30,2021
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