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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：强激光与粒子束

期号：9

页面范围：1400-1404

ISSN号：1001-4322

摘要：DZ4 substrates were coated with NiCoCrAlY by plasma spray and subsequently treated by high current pulsed electron beams (HCPEB) of different parameters. The surface microstructure, phase structure and high temperature oxidation resistance were studied. It has been shown that as a result of the HCPEB treatment the loose and rough structure remelted and the surface became smooth. Smooth microregion, craters and cracks appeared on the surface. The γ�?phase manifolded and there was no visible thermal stress. The oxidation test at 900°C for 100 h showed that a more compact and successive α-Al2O3scale was formed on the surface of the samples after HCPEB irradiation, which improved the oxidation resistance of the NiCoCrAlY coatings obviously.

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