{"title":"Microstructure and corrosion properties of laser clads of magnesium base alloys for laser generated cylinder liners","authors":"T. Maiwald, R. Galun, B. Mordike, F. J. Feikus","doi":"10.1080/0898150021000054511","DOIUrl":null,"url":null,"abstract":"The aim of this investigation was the production of wear and corrosion resistant coatings on magnesium base alloys. In particular it was proposed to generate by laser layers which operate as cylinder liners in a magnesium engine block thus replacing the currently used cast iron cylinder liners used in aluminium engines. These layers were produced using a 10 kW CO 2 laser and powder mixtures of aluminium + copper, aluminium + silicon and an alloyed aluminium-silicon powder in the single step process. The properties of these layers were characterised by metallographic investigations such as optical and scanning electron microscope and hardness measurements. The corrosion resistance has been determined using a modified immersion test in sulphuric acid with drying cycles in air. These conditions are comparable to the conditions found in combustion engines where the layers are to be used. Positive results were obtained with respect to the microstructure formation. Intermetallic phases can ensure a good wear re...","PeriodicalId":49918,"journal":{"name":"Lasers in Engineering","volume":"73 1","pages":"227-238"},"PeriodicalIF":0.6000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lasers in Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/0898150021000054511","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: 9
Abstract
The aim of this investigation was the production of wear and corrosion resistant coatings on magnesium base alloys. In particular it was proposed to generate by laser layers which operate as cylinder liners in a magnesium engine block thus replacing the currently used cast iron cylinder liners used in aluminium engines. These layers were produced using a 10 kW CO 2 laser and powder mixtures of aluminium + copper, aluminium + silicon and an alloyed aluminium-silicon powder in the single step process. The properties of these layers were characterised by metallographic investigations such as optical and scanning electron microscope and hardness measurements. The corrosion resistance has been determined using a modified immersion test in sulphuric acid with drying cycles in air. These conditions are comparable to the conditions found in combustion engines where the layers are to be used. Positive results were obtained with respect to the microstructure formation. Intermetallic phases can ensure a good wear re...
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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