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首页> 外文期刊>JCT research >An investigation of the effect of processing conditions on the microstructure of vacuum plasma-sprayed Ti-Zr-Ni quasicrystal coatings
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An investigation of the effect of processing conditions on the microstructure of vacuum plasma-sprayed Ti-Zr-Ni quasicrystal coatings

机译：加工条件对真空等离子喷涂Ti-Zr-Ni准晶体涂层微观结构的影响

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摘要

Ti_(41.5)5Zr_(41.5)Ni_(17) (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.
机译：使用不同的喷涂参数对两批具有不同尺寸分数的Ti_（41.5）5Zr_（41.5）Ni_（17）（原子％）粉末进行真空等离子喷涂以形成涂层。粉末主要由HCPα和Laves相组成，由于等离子喷涂过程中快速淬火，它们转变为i相。使用图像分析，硬度测试仪，XRD，SEM和TEM检查涂层。 TEM研究表明，涂层具有由极细晶粒构成的微观结构。已经观察到，无论起始粉末尺寸和其他喷雾参数的差异如何，在两个涂层中都发生了多晶至i相的转变。

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