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等离子喷涂YSZ/NiCrAlY涂层及抗熔融Al-Si腐蚀性能研究
引用本文:王鑫,薛召露,倪振航,刘侠,张世宏. 等离子喷涂YSZ/NiCrAlY涂层及抗熔融Al-Si腐蚀性能研究[J]. 稀有金属材料与工程, 2021, 50(1): 291-298
作者姓名:王鑫  薛召露  倪振航  刘侠  张世宏
作者单位:安徽工业大学 先进金属材料绿色制备与表面技术教育部重点实验室,安徽工业大学 先进金属材料绿色制备与表面技术教育部重点实验室,安徽马钢表面技术股份有限责任公司,安徽工业大学 先进金属材料绿色制备与表面技术教育部重点实验室,安徽工业大学 先进金属材料绿色制备与表面技术教育部重点实验室
基金项目:安徽省自然科学基金(1908085QE219);安徽省重点研究与开发计划(201904a05020010, 1804b06020370, 201904b11020020);国家自然科学面上项目(51671002)
摘    要:热浸镀Al-Si合金涂层是一种高效的耐蚀技术.然而,其生产过程中与Al-Si熔液直接接触的部件存在严重的Al-Si熔蚀问题.采用大气等离子喷涂(APS)制备了YSZ/NiCrA1Y涂层,研究了主气流量对YSZ(Y-Si-Zr)涂层微观组织结构、力学性能的影响规律、涂层的高温稳定性和耐Al-Si熔液腐蚀行为.结果表明,随...

关 键 词:大气等离子喷涂  YSZ  力学性能  高温稳定性  Al-Si熔蚀
收稿时间:2020-01-16
修稿时间:2020-02-13

Plasma-sprayed YSZ/NiCrAlY protective coating and its resistance to molten Al-Si corrosion
wangxin,xuezhaolu,nizhenhang,liuxia and zhangshihong. Plasma-sprayed YSZ/NiCrAlY protective coating and its resistance to molten Al-Si corrosion[J]. Rare Metal Materials and Engineering, 2021, 50(1): 291-298
Authors:wangxin  xuezhaolu  nizhenhang  liuxia  zhangshihong
Affiliation:Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Anhui University of Technology,Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Anhui University of Technology,,Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Anhui University of Technology,Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Ministry of Education, Anhui University of Technology
Abstract:Hot dip Al-Si alloy coating is an efficient corrosion resistant technology. However, there are serious Al-Si corrosion problems in some parts of the production line, such as sunk rolls, which are in direct contact with the Al-Si alloy melt. In this paper, YSZ/NiCrAlY protective coating system was prepared by air plasma spraying (APS). The influence of main gas flow on the microstructure, mechanical properties, high-temperature stability and Al-Si alloy corrosion resistance of YSZ coating were also investigated. The results showed that the spreading uniformity, coating density and mechanical properties of the droplet firstly increased and then decreased with the main gas flow rising. The coating exhibited the best surface smoothness, maximum density and optimal mechanical properties when the main flow is 40 L/min. The interface structure of YSZ coating is stable, the porosity is decreased, and the density is significantly increased after heat treatment at 1000°C for 100 h. In addition, no diffusion or reaction zone was found at the interface between YSZ coating and Al-Si alloy melt when the coated sample was immersed in the Al-Si alloy melt for 50 h. Al-Si melt did not penetrate into the coating, but was blocked on the YSZ coating surface, indicating that APS YSZ/NiCrAlY coating can effectively resist Al-Si melt corrosion, which can be used as one of the most potential protective coatings for parts contacting with high temperature Al-Si melt.
Keywords:air plasma spraying   YSZ   mechanical property   high-temperature stability   molten Al-Si corrosion
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