微观组织结构对NiCrAlY涂层抗高温氧化性能的影响
发布时间：2019-05-31 17:09
【摘要】：利用低压等离子喷涂(LPPS)和超音速火焰喷涂(HVOF)分别制备出具有两种典型组织的Ni Cr Al Y涂层,分别为层片状组织和粉末颗粒堆积结构。两种涂层的耐高温氧化性能试验在空气条件下进行,1 100℃分别保温5、10和20 h,以及在1 200℃和1 300℃分别保温10 h。结果表明,在1 100℃等温氧化条件下,层片状结构的LPPS涂层的抗高温性能优于颗粒堆积结构的HVOF涂层,并且随着保温时间的增加,氧化增重呈现抛物线形式增长。在1 200℃和1 300℃变温氧化过程中,颗粒堆积结构的HVOF涂层的抗高温氧化性能高于LPPS涂层。
[Abstract]:Ni Cr Al Y coatings with two typical structures, lamellar structure and powder particle stacking structure, were prepared by low pressure plasma spraying (LPPS) and supersonic flame spraying (HVOF), respectively. The high temperature oxidation resistance tests of the two coatings were carried out under air conditions. The coatings were kept at 1 100 鈩，
本文编号：2489872
[Abstract]:Ni Cr Al Y coatings with two typical structures, lamellar structure and powder particle stacking structure, were prepared by low pressure plasma spraying (LPPS) and supersonic flame spraying (HVOF), respectively. The high temperature oxidation resistance tests of the two coatings were carried out under air conditions. The coatings were kept at 1 100 鈩，
本文编号：2489872
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