Laser-beam modification of oxide thermal barrier coatings deposited by plasma spraying in air

IF 0.6 4区工程技术 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Lasers in Engineering Pub Date : 2002-01-01 DOI:10.1080/0898150021000030111

K. Kobylańska-Szkaradek

引用次数: 3

Abstract

This work describes the influence of laser treatment on the structure and some properties of Al 2 O 3 , Al 2 O 3 + 5%Ni, Al 2 O 3 (95%Ni + 5%Al), Al 2 O 3 + 5%Ni - (95%Ni + 5%Al) and Al 2 O 3 + 5%Ni + CrAl layer oxide ceramic coatings of about 100 m thickness deposited by air plasma spraying on a heat-resistant alloy with a nickel matrix. It has been stated that laser remelting of power density 0.01-0.2 10 9 W m 2 and scanning rate within 5-7 m min 1 ensures good quality of ceramic coatings in comparison with not-remelted coatings. Laser treated ceramic coatings have a better thermal conductivity than as deposited layers. As shown by model calculations, after laser treatment, they show a smaller temperature drop over a given thickness. The erosion resistance of the coatings, however, is greater after laser treatment.

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等离子喷涂氧化热障涂层的激光改性研究

本文研究了激光处理对Al 2o3、Al 2o3 + 5%Ni、Al 2o3 (95%Ni + 5%Al)、Al 2o3 + 5%Ni - (95%Ni + 5%Al)、Al 2o3 + 5%Ni - (95%Ni + 5%Al)和Al 2o3 + 5%Ni + CrAl等约100 m厚的耐热镍基合金氧化陶瓷涂层的组织和部分性能的影响。研究表明，激光重熔的功率密度为0.01 ~ 0.2 ~ 10 ~ 9 W m2，扫描速率在5 ~ 7 m min 1之间，与不重熔的涂层相比，可以保证陶瓷涂层的质量。激光处理的陶瓷涂层具有比沉积层更好的导热性。模型计算表明，激光处理后，它们在给定厚度上显示出较小的温度下降。然而，激光处理后涂层的耐蚀性更强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Lasers in Engineering 工程技术-材料科学：综合

CiteScore

1.00

自引率

20.00%

发文量

审稿时长

3.4 months

期刊介绍： Lasers in Engineering publishes original (primary) research articles, reviews, short communications and letters on all aspects relating to the application of lasers in the many different branches of engineering and related disciplines. The topics covered by Lasers in Engineering are the use of lasers: in sensors or measuring and for mapping devices; in electrocomponent fabrication; for materials processing; as integral parts of production assemblies; within the fields of biotechnology and bioengineering; in micro- and nanofabrication; as well as the materials and processing aspects of techniques such as cutting, drilling, marking, cladding, additive manufacturing (AM), alloying, welding and surface treatment and engineering. Lasers in Engineering presents a balanced account of future developments, fundamental aspects and industrial innovations driven by the deployment of lasers. Modern technology has a vitally important role to play in meeting the increasingly stringent demands made on material and production systems. Lasers in Engineering provides a readily accessible medium for the rapid reporting of new knowledge, and technological and scientific advances in these areas.