期刊
SURFACE & COATINGS TECHNOLOGY
卷 200, 期 9, 页码 2923-2928出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2004.11.040
关键词
[B] bond strength; [C] high velocity oxy-fuel; [D] cermets and composites; Nickel alloy; [X] liquid-solid two-phase state
Several types of Ni and Co based composite coatings were deposited by high velocity oxy-fuel (HVOF) spray process using WC-Co, SiC-Co, TiC-Co (or Ni), Al2O3-Ni, W-Ni composite powders and large metallic powders in order to examine the factors influencing the bond strength of HVOF coatings. The bond strength of coatings was measured with the pull-off test method according to ASTM C-633-79 standard. It was found that the conventional state parameters of spray particles including temperature, velocity and momentum were not directly correlated with the bond strength of HVOF coatings. The physical properties of the non-melting phases in a two-phase particle significantly influence the bond strength of HVOF coatings. The effective mass of non-melting phases in a spray particle, which is defined as the product of density and square of volume fraction of solid phase in the two-phase particle, is proposed to give a good correlation with the bond strength of the coatings. It was found that the bond strength of HVOF coatings is correlated well with the parameter proposed. (c) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据