Kinetic Monte Carlo Simulations of Oxygen Diffusion in Environmental Barrier Coating Materials

Kinetic Monte Carlo Simulations of Oxygen Diffusion in Environmental Barrier Coating Materials

Ceramic Matrix Composite (CMC) materials are of interest for use in next-generation turbine engine components, offering a number of significant advantages, including reduced weight and high operating temperatures. However, in the hot environment in which such components operate, the presence of wate...

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Nonmetallic Materials
Solid-State Physics
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description Ceramic Matrix Composite (CMC) materials are of interest for use in next-generation turbine engine components, offering a number of significant advantages, including reduced weight and high operating temperatures. However, in the hot environment in which such components operate, the presence of water vapor can lead to corrosion and recession, limiting the useful life of the components. Such degradation can be reduced through the use of Environmental Barrier Coatings (EBCs) that limit the amount of oxygen and water vapor reaching the component. Candidate EBC materials include Yttrium and Ytterbium silicates. In this work we present results of kinetic Monte Carlo (kMC) simulations of oxygen diffusion, via the vacancy mechanism, in Yttrium and Ytterbium disilicates, along with a brief discussion of interstitial diffusion.
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However, in the hot environment in which such components operate, the presence of water vapor can lead to corrosion and recession, limiting the useful life of the components. Such degradation can be reduced through the use of Environmental Barrier Coatings (EBCs) that limit the amount of oxygen and water vapor reaching the component. Candidate EBC materials include Yttrium and Ytterbium silicates. 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In this work we present results of kinetic Monte Carlo (kMC) simulations of oxygen diffusion, via the vacancy mechanism, in Yttrium and Ytterbium disilicates, along with a brief discussion of interstitial diffusion.</description><subject>Nonmetallic Materials</subject><subject>Solid-State Physics</subject><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2017</creationdate><recordtype>conference_proceeding</recordtype><sourceid>CYI</sourceid><recordid>eNqFizEKAjEQAK-xEPUHFvsBYY2NtfFEkMNCa49FNsdCbgObnOjvTWFvNTDDzJvHRZSLPKFLWhg8WUxwk3GKVCRphhTg-v4MrHCUEKZcJYhCqy-xpCNroQgHMhM28KleOkBHhU0o5mUzCxW8-nHRrE_t3Z83Spl6LZZ7h9s9IjqHuPuTv5b7OCE</recordid><startdate>20171126</startdate><enddate>20171126</enddate><creator>Good, Brian S.</creator><scope>CYE</scope><scope>CYI</scope></search><sort><creationdate>20171126</creationdate><title>Kinetic Monte Carlo Simulations of Oxygen Diffusion in Environmental Barrier Coating Materials</title><author>Good, Brian S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-nasa_ntrs_201800022003</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Nonmetallic Materials</topic><topic>Solid-State Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Good, Brian S.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Good, Brian S.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Kinetic Monte Carlo Simulations of Oxygen Diffusion in Environmental Barrier Coating Materials</atitle><date>2017-11-26</date><risdate>2017</risdate><abstract>Ceramic Matrix Composite (CMC) materials are of interest for use in next-generation turbine engine components, offering a number of significant advantages, including reduced weight and high operating temperatures. However, in the hot environment in which such components operate, the presence of water vapor can lead to corrosion and recession, limiting the useful life of the components. Such degradation can be reduced through the use of Environmental Barrier Coatings (EBCs) that limit the amount of oxygen and water vapor reaching the component. Candidate EBC materials include Yttrium and Ytterbium silicates. In this work we present results of kinetic Monte Carlo (kMC) simulations of oxygen diffusion, via the vacancy mechanism, in Yttrium and Ytterbium disilicates, along with a brief discussion of interstitial diffusion.</abstract><cop>Glenn Research Center</cop><oa>free_for_read</oa></addata></record>
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subjects Nonmetallic Materials
Solid-State Physics
title Kinetic Monte Carlo Simulations of Oxygen Diffusion in Environmental Barrier Coating Materials
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