Effect of Spraying Parameters on the Microstructure and Mechanical Properties of Micro-Plasma Sprayed Alumina-Titania Coatings

• 作者: 刘顾 华绍春 朱二雷 汪刘应 陈桂明 魏皖宁
• 来源期刊: 等离子体科学和技术：英文版
• 学科: 工学
• 关键词: 二氧化钛涂层 微观结构参数 等离子体喷涂 喷涂参数 氧化铝 力学性能 等离子体电流 等离子喷涂
• 年，卷（期）: 2011,（4）
• 所属期刊栏目: PLASMA TECHNOLOGY
• 页码范围: 474-479
• 页数: 6页
• 分类号: TQ174.756|TG174.451
• 语种: 英文

摘要

Electrical property of a micro-plasma spray system with different working-gas feed- ing schemes was tested to optimize the plasma spray process. The arc voltage with an integrated gas injection mode is higher than that with radial injection or axial injection modes. Thus, an integrated gas injection mode with an excellent electrical characteristic was adopted to deposit alumina-titania coating. The microstructure, bonding strength and hardness of the plasma sprayed alumina-titania coating, as a function of the spraying parameters, e.g., plasma current, gas flow rate and gas pressure, were studied. It was shown that the spraying parameters affected remarkably on the microstructure of the coating. Different tendencies in bonding strength and hardness were also shown for different spraying parameters. At an arc current of 250 A, a gas flow rate of 20 L/min and a gas pressure of 0.5 MPa, the bonding strength and micro-hardness of the coatings reach 40.6 MPa and HV1406.1, respectively.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	刘顾		1	0	0.0	0.0
2	汪刘应		1	0	0.0	0.0
3	陈桂明		1	0	0.0	0.0
4	魏皖宁		1	0	0.0	0.0
5	华绍春		1	0	0.0	0.0
6	朱二雷		1	0	0.0	0.0