Influence of Ta and Y co-alloying on the structure, mechanical, and thermal properties of TiAlN coatings

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2024-11-21 DOI:10.1016/j.surfcoat.2024.131581

Jia J. Li , Xu Sun , Li Chen , Yu X. Xu , She Q. Wang

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Abstract

Alloying is commonly recognized as an efficient method to enhance the high-temperature properties of TiAlN coatings. In this study, a series of Ti_{1−x−y−z}Al_xTa_yY_zN (0.01 ≤ y ≤ 0.06, 0.01 ≤ z ≤ 0.06) coatings with similar Al content was investigated, concerning phase structure, thermal stability, and oxidation resistance. The presence of an excessive Y-content in Ti_0.41Al_0.52Ta_0.01Y_0.06N and Ti_0.41Al_0.52Ta_0.02Y_0.05N coatings causes a mixed cubic and wurtzite structure, leading to reduced hardness. A single-phase cubic structure was obtained by low Y-containing Ti_{1−x−y−z}Al_xTa_yY_zN coatings with z ≤ 0.03. Among them, the Ti_0.41Al_0.52Ta_0.05Y_0.02N coating obtains the highest hardness value of 34.3 ± 0.9 GPa in the as-deposited state. Moreover, the thermal stability and oxidation resistance of the Ti_0.46Al_0.54N coating were significantly improved by co-alloying with Ta and Y. Upon annealing at 900 °C, the Ti_0.41Al_0.52Ta_0.05Y_0.02N coating shows a peak hardness of 35.8 ± 1.4 GPa. Increasing Ta-content and decreasing Y-content give rise to a decline in oxide scale thickness when exposed to air at 900 °C for 10 h. However, the Ti_0.41Al_0.52Ta_0.05Y_0.02N coatings exhibit the best oxidation resistance after oxidation at 1000 °C for 15 h with an oxide scale of ~3.24 μm. In general, the Ti_0.41Al_0.52Ta_0.05Y_0.02N coatings showed the best comprehensive performance in this work.

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Ta 和 Y 共合金化对 TiAlN 涂层的结构、机械和热性能的影响

合金化是公认的提高 TiAlN 涂层高温性能的有效方法。本研究对一系列铝含量相近的 Ti1-x-y-zAlxTayYzN（0.01 ≤ y ≤ 0.06，0.01 ≤ z ≤ 0.06）涂层的相结构、热稳定性和抗氧化性进行了研究。在Ti0.41Al0.52Ta0.01Y0.06N和Ti0.41Al0.52Ta0.02Y0.05N涂层中，Y含量过高会导致立方和沃特兹混合结构，从而降低硬度。z≤0.03的低含Y的Ti1-x-y-zAlxTayYzN镀层获得了单相立方结构。其中，Ti0.41Al0.52Ta0.05Y0.02N涂层在沉积状态下获得了34.3 ± 0.9 GPa的最高硬度值。此外，通过与 Ta 和 Y 共合金化，Ti0.46Al0.54N 涂层的热稳定性和抗氧化性得到了显著改善。在 900 °C 退火后，Ti0.41Al0.52Ta0.05Y0.02N 涂层的峰值硬度为 35.8 ± 1.4 GPa。在 900 °C 的空气中暴露 10 小时后，Ta 含量的增加和 Y 含量的减少会导致氧化鳞片厚度的下降。然而，在 1000 °C 氧化 15 小时后，Ti0.41Al0.52Ta0.05Y0.02N 涂层表现出最佳的抗氧化性，氧化鳞片约为 3.24 μm。总的来说，在这项工作中，Ti0.41Al0.52Ta0.05Y0.02N 涂层的综合性能最好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.