等离子喷涂是近十年间发展起来的一项新工艺,由于等离子喷焰具有温度高(超过一切己知物质的熔点)、速度大(通常为100～1000米/秒)、气氛可控的特点,是在普通材料上涂敷各种耐高温、耐研磨、耐腐蚀和其他特殊性能的涂层的有力工具。实践表明,和火焰喷涂及电弧喷涂相比,用等离子喷涂方法得到的涂层密度较高,和基材结合较好。等离子喷涂首先用在原子能、火箭、导弹等尖端部门。但是,近几年来,它在冶金、机械、石油、化工和国民经济其他领域中愈来愈广泛地得到了应用,等离子喷涂设备的定型生产将大大加速这项新技术的推 Plasma spraying is a new process developed in recent ten years. Plasma jet has the characteristics of high temperature (more than melting point of all known substances), high speed (usually 100-1000 m / s) and controlled atmosphere. Is a common material coated with a variety of high temperature, abrasion resistance, corrosion resistance and other special properties of the coating is a powerful tool. Practice shows that, compared with flame spraying and arc spraying, the coating density obtained by plasma spray method is higher, and the substrate is better. Plasma spraying first used in atomic energy, rockets, missiles and other cutting-edge departments. However, in recent years it has been increasingly used in other fields of metallurgy, machinery, petroleum, chemical industry and national economy, and the stereotyped production of plasma spraying equipment will greatly accelerate the push of this new technology