An investigation of the effect of processing conditions on the microstructure of vacuum plasma-sprayed Ti–Zr–Ni quasicrystal coatings

被引：0
作者：
P. P. Bandyopadhyay
机构：
[1] IIT Kharagpur,Department of Mechanical Engineering
[2] EMPA,undefined
来源：
Journal of Coatings Technology and Research | 2008年 / 5卷
关键词：
Plasma spraying; Quasicrystals; Image analysis; Scanning electron microscopy (SEM); Transmission electron microscopy (TEM);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Ti41.5Zr41.5Ni17 (at.%) powders from two batches having different size fractions have been vacuum plasma sprayed to form coatings using different sets of spray parameters. The powders are composed mainly of the HCP alpha and Laves phases which transform to i-phase owing to rapid quenching during plasma spraying. The coatings are examined using image analysis, hardness tester, XRD, SEM, and TEM. TEM studies revealed that the coating has a microstructure constituted by extremely fine grains. It has been observed that the polycrystalline to i-phase transformation occurs in both coatings irrespective of the differences in starting powder size and other spray parameters.
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页码：379 / 383
页数：4
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