FAILURE MECHANISMS OF THERMAL BARRIER COATINGS INTERNAL COMBUSTION ENGINES AND llMPROVEMENTS

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Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi
Volume:7 Issue:1
FAILURE MECHANISMS OF THERMAL BARRIER COATINGS INTERNAL COMBUSTION ENGINES AND llMPROVEMENTS

FAILURE MECHANISMS OF THERMAL BARRIER COATINGS INTERNAL COMBUSTION ENGINES AND llMPROVEMENTS

Authors : Adnan PARLAK, Sakip KÖKSAL, Aslan ÇOBAN, İsmet ÇEVİK

Pages : 108-113

Doi:10.16984/saufbed.28534

View : 23 | Download : 11

Publication Date : 2003-04-01

Article Type : Research Paper

Abstract :MechanicaJ properties of high performance ceramics have been improved to the point where their use in heat engines is possible. The high temperature strength and low thermal expansion properties of bigh performance ceramics offer an advantage over metals in the development of non-water cooling engine. However, because bard environment in diesel engine combustion chamber, solving the problem of durabiUty of TBC is important. DurabiUty of thermal barrier coatingsinsert ignore into journalissuearticles values(TBC); is liınited by two main failure mechanisms: Therınal expansion nlİsmatch betwcen bond coat and top coat and bond coat oxidation. Both of these can cause failure of the ceramic top coat. Developments of recent years sholv that bond coats with higher oxidation resistance tend to have better coating system cyclic lives
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