Honghong Zhang , Binyang Zhang , Zeqing Li , Luqing Cui , Yonghua Chen , Xin Cao , Weifeng He
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引用次数: 0
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.
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.