Characteristics of high hardness alumina coatings formed by gas tunnel plasma spraying
Characteristics of high hardness alumina coatings formed by gas tunnel plasma spraying
复制标题
气体隧道等离子喷涂高硬度氧化铝涂层的特点
DOI：
10.1007/bf02645881
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发表时间：
1996
影响因子：
3.1
通讯作者：
A. Kobayashi
中科院分区：
文献类型：
--
作者：
A. Kobayashi
采用风洞等离子喷涂技术在常压下制备了高硬度氧化铝涂层，并对涂层的性能进行了研究。氧化铝涂层在短喷涂距离下横截面的硬度大于1300 HV，且硬质层厚度随着功率输入的增加而增加。用显微镜和X射线衍射（XRD）方法研究了氧化铝涂层的微观结构。结果表明，涂层的高硬度层中，晶粒尺寸较小（约10 μ m），以α-Al 2 O3为主。最后，根据这些结果估计了等离子体能量的影响。
High hardness alumina coatings were formed at atmospheric pressure by gas tunnel plasma spraying, and the characteristics of these coatings were investigated. The hardness on the cross section of the alumina coating at a short spraying distance was more than 1300 HV, and the thickness of the hard layer increased with an increase of power input. The microstructure of the alumina coating was investigated by microscopy and x-ray diffraction (XRD) methods. It was ascertained that the cell size was small (∼10 μn), and α-alumina was dominant in the high hardness layer of the coating. Finally, the effect of plasma energy was estimated from these results.