Effects of process parameters on deposition behavior and mechanical properties of alumina coatings by aerosol deposition

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2024-10-03 DOI:10.1111/jace.20169

Bingying Xie, Rana Hassan-Naji, David A. Hall

{"title":"Effects of process parameters on deposition behavior and mechanical properties of alumina coatings by aerosol deposition","authors":"Bingying Xie, Rana Hassan-Naji, David A. Hall","doi":"10.1111/jace.20169","DOIUrl":null,"url":null,"abstract":"<p>As a novel coating spray technique, the aerosol deposition method is applied for the fabrication of dense, nanostructured ceramic coatings at room temperature via an impact consolidation mechanism. It is widely recognized that the successful deposition of coatings is strongly dependent on processing parameters during the deposition process. In this study, a brush-type aerosol generator was employed to enhance the continuity and stability of the aerosol supply. The uniformity of powder consumption at different packing densities was evaluated; an optimal loading density of 33% was identified for the alumina powders used in this study. Both simulation and experimental studies were performed to investigate the influence of gas flow rate and standoff distance (SoD) on coating fabrication and properties. The predicted particle impact velocity increased with increasing gas flow intensity and SoD, resulting in enhanced mechanical properties of the coatings, including adhesive strength and hardness. The maximum compressive residual stress value of 389 MPa was determined for an alumina coating fabricated at a gas flow rate of 20 L/min.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 2","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.20169","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the American Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/jace.20169","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

As a novel coating spray technique, the aerosol deposition method is applied for the fabrication of dense, nanostructured ceramic coatings at room temperature via an impact consolidation mechanism. It is widely recognized that the successful deposition of coatings is strongly dependent on processing parameters during the deposition process. In this study, a brush-type aerosol generator was employed to enhance the continuity and stability of the aerosol supply. The uniformity of powder consumption at different packing densities was evaluated; an optimal loading density of 33% was identified for the alumina powders used in this study. Both simulation and experimental studies were performed to investigate the influence of gas flow rate and standoff distance (SoD) on coating fabrication and properties. The predicted particle impact velocity increased with increasing gas flow intensity and SoD, resulting in enhanced mechanical properties of the coatings, including adhesive strength and hardness. The maximum compressive residual stress value of 389 MPa was determined for an alumina coating fabricated at a gas flow rate of 20 L/min.

Abstract Image

查看原文本刊更多论文

工艺参数对气溶胶沉积氧化铝涂层沉积行为和力学性能的影响

作为一种新型的涂层喷涂技术，气溶胶沉积法通过冲击固结机制在室温下制备致密的纳米陶瓷涂层。人们普遍认为，镀层的成功沉积在很大程度上取决于沉积过程中的工艺参数。为了提高气溶胶供应的连续性和稳定性，本研究采用了电刷式气溶胶发生器。评价了不同包装密度下粉末消耗的均匀性；确定了本研究中使用的氧化铝粉末的最佳负载密度为33%。通过模拟和实验研究了气体流速和超氧化物歧化酶（SoD）对涂层制备和性能的影响。随着气体流动强度和SoD的增加，预测颗粒冲击速度增加，涂层的力学性能增强，包括粘接强度和硬度。在气体流速为20 L/min时，制备的氧化铝涂层的最大残余压应力值为389 MPa。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.