Study of the High-Temperature Stability and the Heat Resistance of TiAlN–Cu and TiAlN–Ni Coatings by Analyzing the Diffusion Processes in Annealing
- 作者: Volkhonskii A.1, Blinkov I.1, Levinskii Y.2, Belov D.1
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隶属关系:
- National University of Science and Technology MISiS
- Institute of Structural Macrokinetics and Materials Sciences, Russian Academy of Sciences
- 期: 卷 2018, 编号 11 (2018)
- 页面: 1088-1093
- 栏目: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172736
- DOI: https://doi.org/10.1134/S0036029518110125
- ID: 172736
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详细
The thermal stability and the heat resistance of TiAlN–Cu and TiAlN–Ni coatings are studied. The phase compositions of the coatings are found to be unchanged upon annealing at temperatures up to 700°C in a vacuum of 10–5 Pa. As the annealing temperature increases to 800°C, the lattice parameter of the nitride phase increases to near-stoichiometric TiNx, the microstrains decrease, and the coherent domain sizes increase. The calculated diffusion coefficients of oxygen in the coatings upon heating in the temperature range 600–800°C demonstrate higher protective properties (high-temperature oxidation resistance) of the TiAlN–Ni coatings as compared to the TiAlN–Cu coatings, which is caused by the formation of a barrier layer based on NiO, TiO2, and TiNiO3 oxides.
作者简介
A. Volkhonskii
National University of Science and Technology MISiS
编辑信件的主要联系方式.
Email: abwest@yandex.ru
俄罗斯联邦, Moscow, 119049
I. Blinkov
National University of Science and Technology MISiS
Email: abwest@yandex.ru
俄罗斯联邦, Moscow, 119049
Yu. Levinskii
Institute of Structural Macrokinetics and Materials Sciences, Russian Academy of Sciences
Email: abwest@yandex.ru
俄罗斯联邦, Chernogolovka, Moscow oblast, 142432
D. Belov
National University of Science and Technology MISiS
Email: abwest@yandex.ru
俄罗斯联邦, Moscow, 119049