Effect of Zr/Dy on thermal corrosion resistant properties of NiCrAlY coatings

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

Surface & Coatings Technology Pub Date : 2024-10-30 DOI:10.1016/j.surfcoat.2024.131497

Xun Zhu , Xiaoya Li , Cheng Zhang , Peng Tang , Songsheng Lin , Zhiqiang Fu , Qian Shi

引用次数: 0

Abstract

Dy or Zr doped NiCrAlY coatings were fabricated via arc ion plating technology on nickel-based single crystal superalloy. Thermal corrosion tests of NiCrAlY, NiCrAlYZr, and NiCrAlYDy coatings with 75 wt% Na₂SO₄ + 25 wt% NaCl mixed salt were conducted at 900 °C. The weight gain of the NiCrAlY, NiCrAlYZr, and NiCrAlYDy coating samples after 100 h of thermal corrosion was as follows: −11.32, 1.06 and −6.56 mg∙cm⁻². The results indicated that the NiCrAlYZr coating exhibits superior thermal corrosion resistance compared to both NiCrAlY and Dy-doped NiCrAlY coatings due to the beneficial effects of Zr interacting with S and Cl, making it more effectively protect the hot components of aircraft engine from thermal corrosion.

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Zr/Dy 对 NiCrAlY 涂层耐热腐蚀性能的影响

通过电弧离子镀技术在镍基单晶超合金上制造了掺杂镝或锆的 NiCrAlY 涂层。在 900 °C 温度下，用 75 wt% Na2SO4 + 25 wt% NaCl 混合盐对 NiCrAlY、NiCrAlYZr 和 NiCrAlYDy 涂层进行了热腐蚀试验。经过 100 小时热腐蚀后，NiCrAlY、NiCrAlYZr 和 NiCrAlYDy 涂层样品的增重情况如下：分别为-11.32、1.06 和 -6.56 mg∙cm-2。结果表明，与 NiCrAlY 和 Dy 掺杂的 NiCrAlY 涂层相比，NiCrAlYZr 涂层具有更优异的耐热腐蚀性能，这是因为 Zr 与 S 和 Cl 的相互作用产生了有利影响，使其能更有效地保护航空发动机的热部件免受热腐蚀。

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.