Optimizing the anti-erosion performance of ZrAlSiN coatings by adjusting nitrogen flow rate

IF 6.1 2区 材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS
Honghong Zhang , Binyang Zhang , Zeqing Li , Luqing Cui , Yonghua Chen , Xin Cao , Weifeng He
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Abstract

To optimize the anti-erosion performance of ZrAlSiN coatings, a series of ZrAlSiN coatings were fabricated at different nitrogen flow rates by the means of magnetic filtered cathode vacuum arc technology. The effects of the nitrogen flow rate on the microstructure and mechanical properties of ZrAlSiN coatings were systematically investigated. Their sand erosion resistance and corresponding damage mechanisms were elaborately explored as well. The results showed that the increased nitrogen content in ZrAlSiN coatings promoted the crystallinity and the formation of metal nitrides. With increasing nitrogen flow rate, the hardness and residual stress of coatings increased initially and then decreased, while the adhesion strength displayed an opposite variation trend. Therein, the ZrAlSiN coating prepared at 100 sccm nitrogen flow rate exhibited the best sand erosion resistance due to the optimal combination of high hardness and adhesion strength, as well as appropriate residual stress. As the nitrogen flow rate increased, the erosion damage mechanism of ZrAlSiN coatings transformed from ductile to brittle characteristics. The N25 coating predominantly displayed ductile damage characteristics, including deformation, cutting and plough, while the N50, N75 and N100 coatings were more prone to brittle spalling as a result of the initiation and propagation of cracks.
通过调节氮流量优化ZrAlSiN涂层的抗侵蚀性能
为了优化ZrAlSiN涂层的抗侵蚀性能,采用磁过滤阴极真空电弧技术在不同氮气流量下制备了一系列ZrAlSiN涂层。系统研究了氮流量对ZrAlSiN涂层组织和力学性能的影响。并对其抗沙蚀性及损伤机理进行了详细探讨。结果表明,ZrAlSiN涂层中氮含量的增加促进了涂层的结晶度和金属氮化物的形成。随着氮流量的增加,涂层的硬度和残余应力均呈现先增大后减小的趋势,而附着强度则呈现相反的变化趋势。其中,氮流量为100 sccm时制备的ZrAlSiN涂层由于具有较高的硬度和粘附强度以及适当的残余应力,具有最佳的抗砂蚀性能。随着氮流量的增加,ZrAlSiN涂层的侵蚀损伤机制由延性向脆性转变。N25涂层主要表现出韧性损伤特征,包括变形、切割和犁形损伤,而N50、N75和N100涂层更容易因裂纹的萌生和扩展而出现脆性剥落。
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来源期刊
Surface & Coatings Technology
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.
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