Nb合金基体等离子喷涂Al_2O_3涂层制备工艺研究
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- 英文论文题名：Study on the processing of plasma spray Al_2O_3 coating on the surface of niobium Alloy
- 论文作者：王振东 ; 郑剑平
- 英文论文作者：WANG Zhen-dong ; ZHENG Jian-ping ; China Institute of Atomic Energy
- 年：2015
- 作者机构：中国原子能科学研究院;
- 论文关键词：Nb合金 ; 等离子喷涂 ; 热冲击 ; Al_2O_3涂层
- 英文论文关键词：niobium alloy ; plasma spray ; thermal shock ; Al_2O_3 coating
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第5册（核材料分卷、辐射防护分卷）
- 语种：中文
- 分类号：TG174.4
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：569k
- 原文格式：O
- 会议级别：全国
摘要
本文利用等离子喷涂工艺在铌合金基体上制备了Al_2O_3涂层,通过SEM和显微硬度分析对影响喷涂工艺的主要参数进行了研究。研究结果表明:Al_2O_3粉末粒度5~25μm,喷涂距离90 mm,喷涂电流550 A,电压90 V时涂层孔隙率最低,平均结合强度最高。该工艺参数下制备的Al_2O_3涂层,在真空(5×10~(-2)Pa)下300~800℃热冲击20次,涂层与基体结合处无裂纹。
The Processing of Plasma Spray Al_2O_3 Coating on the surface of Niobium Alloy was investigated in this paper.The effect of Al_2O_3 powder size and spraying power and distance on Al_2O_3 coatings microstructure and properties were investigated by SEM and Micro-hardness analysis.The results indicated that Al_2O_3 coatings had the lowest porosity rate and highest average bonding strength with the optimum processing parameters such as particle size 5~25 μm of Al_2O_3 powder,90 mm spraying distance and 550 A spraying current,90 V spraying voltage,After thermal shocking for 20 times at the temperature 300~800 ℃,no cracks emerged between the coating and the base material.
The Processing of Plasma Spray Al_2O_3 Coating on the surface of Niobium Alloy was investigated in this paper.The effect of Al_2O_3 powder size and spraying power and distance on Al_2O_3 coatings microstructure and properties were investigated by SEM and Micro-hardness analysis.The results indicated that Al_2O_3 coatings had the lowest porosity rate and highest average bonding strength with the optimum processing parameters such as particle size 5~25 μm of Al_2O_3 powder,90 mm spraying distance and 550 A spraying current,90 V spraying voltage,After thermal shocking for 20 times at the temperature 300~800 ℃,no cracks emerged between the coating and the base material.
引文
[1]KnoteO,ElingR,StrompenN.Thin Solid Films.1984,118:457.