【作者】 高阳；

【Author】 GAO Yang;DalianMaritime University,Center ofThermalSpray;

【机构】 大连海事大学热喷涂中心；

【摘要】 超低压等离子喷涂技术是近几年来发展的一项崭新技术,该技术特点是在原有的低压等离子喷涂基础上(通常喷涂工作压力为5000-80000Pa),采用大流量真空泵,使容器内动态工作压力达到100 Pa以下,配置150kw以上大功率等离子喷枪,使从喷枪喷出的高温粉体在加热过程中达到一定比率的气化。该技术结合了传统等离子喷涂或者低压等离子喷涂以凝固为主形成喷涂涂层和物理气相沉积以气/固方式形成沉积薄膜的特征。利用该技术可以制备不同与传统等离子喷涂和物理气相沉积能够获得的涂层组织结构,为材料表面改性提供了新的技术途径。本文将介绍这一技术的特点、发展动态和最近大连海事大学自行研制的超低压等离子喷涂与沉积设备。更多还原

【Abstract】 Very low pressure plasma spraying and deposition(VLPPSD) is a new technology which was developed on the basis of conventional low pressure plasma spray(usually camber pressure from 5000 to 80000Pa) to make the very low camber pressure below 100 Pa by using the lager capability pumps and plus a high powers plasma torch higher than 150 kW.The powder particles were heated to liquid and even evaporation in such high temperature and low pressure plasma jets.This technology is combined with the conventional low pressure plasma spray formed coatings through the solidification and PVD formed coatings by the evaporation deposition,which can prepared a especial structural coatings different from plasma spray or PVD.This article will introduce VLPPSD and development tendencies and a new facility of VLPPSD developed by Dalian Maritime University.更多还原