钨涂层等离子体喷涂参数优化分析  

Spraying Parameter Optimization of Plasma Sprayed Tungsten Coating

作　　者：种法力[1] 

机构地区：[1]徐州工程学院数理学院,江苏徐州221000

出　　处：《热加工工艺》2015年第14期196-199,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(11205130);江苏省"青蓝工程"项目(12QL00129);江苏省高校自然科学基金资助项目(12KJD480002)

摘　　要：利用等离子体喷涂技术在铜基体上制备1 mm厚的钨涂层,并分析了不同喷涂功率及Ar/H2条件对涂层微观形貌、气孔率、热导率、表面粗糙度及成分等的影响。结果显示,喷涂功率对涂层性能影响较大,Ar/H2比值大小也会影响钨粒子飞行速度和粒子熔化状态,进而影响涂层性能。在功率大于40 k W、Ar/H2=35/15时钨粒子熔化状态较好,涂层表面粗糙度较小,涂层气孔率较小,传热性能较好。Tungsten coating with 1mm thickness was fabricated on copper alloy substrate by vacuum plasma spraying technology. The effects of spraying power and the Ar/H2 ratio on the coating properties, such as microstructure, pore size diameter and distribution, the transfer heat capability, oxygen content and surface roughness were analyzed. The results show that the spraying power has the evident effect on the W-coating properties; Ar/H2 ratio too, it effects on the melting powder speed and the melting state. When the power exceeds 40 kW at Ar/H2=35/15, the W coating exhibits the higher transfer-heat capability, the lower porosity and the surface roughness.

关 键 词：等离子体喷涂 钨 参数优化 

分 类 号：TG146.4[一般工业技术—材料科学与工程] TG113.2[金属学及工艺—金属材料]