摘要
超音速火焰喷涂由于具有焰流速度快、焰流长、直径收缩小、粉末动能和能量密度大等特点,使其涂层呈现致密、氧化物含量和未熔颗粒少、孔隙率低、结合强度高、加工性能好、不易剥落等特性。本文叙述了等离子喷涂、火焰喷涂和超音速火焰喷涂3种喷涂试验,并对获得的涂层进行了对比、分析、评价,说明了超音速火焰喷涂的优越性。
High velocity oxygen flame (HVOF) sprayed coating is characterized by its densifi-cation, less content of oxides and unmelted particles, lower porosity, higher bond strength, better machin-ability and non easy spalling because of its features of rapid flame flow speed, longer flame flow, less diameter contraction and bigger kinetic energy of power and energy densities. This paper describes three spraying tests of plasma spraying, flame spraying and HVOF spraying, and the coatings sprayed are compared, analyzed and evaluated, so that the advantages of the HVOF spraying are proved.
出处
《航空制造技术》
北大核心
2004年第3期72-74,78,共4页
Aeronautical Manufacturing Technology
