{"title":"Laser-beam modification of oxide thermal barrier coatings deposited by plasma spraying in air","authors":"K. Kobylańska-Szkaradek","doi":"10.1080/0898150021000030111","DOIUrl":null,"url":null,"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.","PeriodicalId":49918,"journal":{"name":"Lasers in Engineering","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lasers in Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/0898150021000030111","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
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.
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.
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