Journal
JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME
Volume 122, Issue 4, Pages 632-636Publisher
ASME-AMER SOC MECHANICAL ENG
DOI: 10.1115/1.1287584
Keywords
-
Categories
Ask authors/readers for more resources
Plasma-sprayed mullite (3Al(2)O(3). 2SiO(2)) and mullite/yttria-stabilized-zirconia (YSZ) dual laver coatings have been developed to protect silicon-based ceramics from environ mental attack. Mullite-based coating systems show excellent durability in air. However. in combustion environments, corrosive species such as molten salt or water vapor penetrate through cmc ks in the coating and attack the Si-based ceramics along the interface, Thus the modification of` the coating system for enhanced crack-resistance is necessary for long-term durability in combustion environments. Other key durability issues include interfacial contamination and coating/substrate bonding, interfacial contamination leads to enhanced oxidation and interfacial pore formation. while a weak coating/substrate bonding leads to rapid attack of` the interface by corrosive species, both of which can cause a premature failure of the coating. interfacial contamination can be minimized by limiting impurities in coating and substrate materials. The interface may be modified to improve the coating/substrate bond.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available