| 引用本文: | 杨德明,高阳,周起帆,蔡林.微观组织结构对NiCrAlY涂层抗高温氧化性能的影响[J].中国表面工程,2017,30(5):119~125 |
| YANG De-ming,GAO Yang,ZHOU Qi-fan,CAI Lin.Effects of Microstructure on High Temperature Oxidation Resistance of NiCrAlY Coatings[J].China Surface Engineering,2017,30(5):119~125 |
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| 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NiCrAlY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。 |
| 关键词: 低压等离子喷涂 超音速火焰喷涂 NiCrAlY 抗高温氧化 |
| DOI：10.11933/j.issn.1007-9289.20170404001 |
| 分类号: |
| 基金项目:辽宁省自然科学基金（20170540084）；中央高校基本科研业务费专项资金（3132017024） |
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| Effects of Microstructure on High Temperature Oxidation Resistance of NiCrAlY Coatings |
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YANG De-ming, GAO Yang, ZHOU Qi-fan, CAI Lin
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Center of Thermal Spray, Dalian Maritime University, Dalian 116026, Liaoning
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| Abstract: |
| Two types of NiCrAlY coatings with lamellar and particle accumulated microstructure were deposited by low pressure plasma spraying (LPPS) and high velocity oxy fuel spraying (HVOF), respectively. Oxidation of as-sprayed coatings of each type was carried out in air at 1 100℃ for 5, 10, 20 h, as well as 1 200℃ and 1 300℃ for 10 h. The results show that the LPPS coating with lamellar microstructure shows better oxidation resistance in the isothermal oxidation condition at 1 100℃. With the increase of the holding time, the oxidation weight gain gradually decreases, which is similar to a parabola type. In the oxidation process at 1 200℃ and 1 300℃, the high temperature oxidation resistance of the HVOF coating with particle accumulated microstructure is much better than that of the LPPS coating. |
| Key words: low pressure plasma spraying (LPPS) high velocity oxy fuel spraying (HVOF) NiCrAlY high temperature oxidation resistance |
