Optimizing Nanostructured Yttria-Stabilized Zirconia Electrophoretic Coatings on MCrAlY Bond-Coated Inconel 738LC Superalloy

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Transactions of the Indian Ceramic Society Pub Date : 2023-01-02 DOI:10.1080/0371750X.2022.2152369

Amirreza Khezrloo, M. Afshar, S. Baghshahi, A. Amadeh

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Abstract

In this research study, to apply uniform and homogenous nanostructured yttriastabilized zirconia (YSZ) coatings on the Inconel 738LC with MCrAlY bond-coat, the effect of electrophoretic parameters was evaluated. Two different suspensions of 3YSZ nanoparticles were prepared in acetylacetone and acetone separately, using an iodine dispersant. The electrophoretic deposition was conducted by applying voltages of 20 V, 50 V and 80 V for 3 min on MCrAlY coated Inconel 738LC. The coatings were sintered for 120 min at 900°, 1000° and 1100°C temperature. The results revealed that the non-uniform coating included some cracks and cavities as the applied voltage exceeded the optimal amount. The results also depicted that the YSZ coating prepared in acetylacetone medium with 0.4 g/L iodine dispersant, voltage of 50 V, coating time of 3 min, and sintering temperature of 1000°C was a uniform and crack-free structure. Furthermore, the results showed that a continuous alumina layer was formed during oxidation. GRAPHICAL ABSTRACT

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MCrAlY键合铬镍铁合金738LC表面纳米钇稳定氧化锆电泳涂层的优化

在本研究中，为了在MCrAlY结合涂层的Inconel 738LC上涂上均匀且均匀的纳米结构钇稳定氧化锆(YSZ)涂层，评估了电泳参数的影响。采用碘分散剂分别在乙酰丙酮和丙酮中制备了两种不同的3YSZ纳米颗粒悬浮液。在mccraly涂层的Inconel 738LC上分别施加20 V、50 V和80 V电压3 min进行电泳沉积。分别在900°、1000°和1100°C温度下烧结120 min。结果表明，当外加电压超过最优值时，镀层不均匀，出现裂纹和空洞。结果表明，在含碘分散剂0.4 g/L、电压为50 V、涂覆时间为3 min、烧结温度为1000℃的乙酰丙酮介质中制备的YSZ涂层结构均匀、无裂纹。结果表明，氧化过程中形成了连续的氧化铝层。图形抽象

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来源期刊

Transactions of the Indian Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

2.3 months

期刊介绍： Transactions of the Indian Ceramic Society is a quarterly Journal devoted to current scientific research, technology and industry-related news on glass and ceramics. The Journal covers subjects such as the chemical, mechanical, optical, electronic and spectroscopic properties of glass and ceramics, and characterization of materials belonging to this family. The Editor invites original research papers, topical reviews, opinions and achievements, as well as industry profiles for publication. The contributions should be accompanied by abstracts, keywords and other details, as outlined in the Instructions for Authors section. News, views and other comments on activities of specific industries and organizations, and also analyses of industrial scenarios are also welcome.