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热处理工艺对纳米氧化锆粉体微观结构与涂层性能的影响
Authors
姚星合
张伟刚
朱永平
Publication date
1 January 2011
Publisher
Abstract
研究了高温煅烧、等离子炬和等离子流场3种热处理工艺对ZrO2-8%(mol)Y2O3(8YSZ)球形颗粒及其等离子喷涂涂层微观组织结构的影响.结果表明,由等离子炬处理后的8YSZ颗粒制备的等离子喷涂涂层的结合强度最高,平均为25MPa,抗热震性能最好,1200℃恒温5min,水冷、热循环达41次;而采用等离子流场处理的颗粒所制涂层结合强度最差,平均为11MPa,热震时涂层易开裂,热循环次数为17次;高温煅烧的颗粒所制涂层性能依赖于煅烧温度和时间,其中1200℃下煅烧2h的颗粒所制涂层力学性能最优,平均结合强度为21MPa,热循环次数为38次
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Last time updated on 05/12/2019