纳米技术在水轮机磨蚀防护中的应用  

Aplacation of Nano-technology on Hydraulic Turbine Erosion of High Silt Content River

作　　者：陈德新[1] 唐锋[2] 段开创[1] 

机构地区：[1]华北水利水电学院,河南郑州450008 [2]二滩水电开发有限责任公司,四川成都610051

出　　处：《机电产品开发与创新》2008年第6期23-24,30,共3页Development & Innovation of Machinery & Electrical Products

摘　　要：多泥沙河流水轮机过流部件的磨蚀十分严重。纳米碳化钨超音速火焰喷涂(WC-HVOF)由于具有焰流速度快、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、不易剥落等特性是水轮机磨蚀表面防护的良好材料。本文阐述了超音速火焰喷涂的原理、方法和在水轮机磨蚀防护中的应用效果。Hydraulic turbine erosion is serious on high silt content river. Nano WC-High velocity oxygen flame （HVOF） sprayed coating is characterized by its densification, less content of oxides and unmelted particles, lower porosity, higher bond strength, better machinability and non-easy spalling because of its features of high rapid flame flow speed, and bigger kinetic energy of power and energy densities. This paper describes the principle and methord of HVOF, the effect of HVOP on Hydraulic turbine also be discussed.

关 键 词：水轮机 磨蚀 纳米技术 超音速火焰喷涂 防护 

分 类 号：TK7[动力工程及工程热物理—流体机械及工程] TB383[一般工业技术—材料科学与工程]