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  • The Effect of Mounting Technique on the Microstructure of Thermal Barrier Coating (TBC) (.pdf)
    The characterization of a thermal barrier coating (TBC) using routine metallographic methods has has investigators uncertain as to the authenticity of the microstructure concerning porosity, cracking and other features. Mounting is a very important step in the process. A greater understanding
  • Power Engineering - The Art and Craft of Applying Thermal Barrier Coatings to Improve Life Expectancy
    T hermal barrier coatings (TBCs) protect turbine components from oxidation and corrosion and effectively provide greater durability and reliability to turbine engines. The importance of protecting turbines from the degradation caused by high temperature and wear is fully understood and has been
  • Hard-Coating Removal That s Easy on the Environment
    what you need to know. The AWJ process works especially well on tough coatings that see extreme environments, like molybdenum- chromium-aluminum-yttrium (MCrAlY) ceramic thermal-barrier coatings (TBCs) that protect superalloys in gas turbines. Despite careful engineering of the coatings, intermediate
  • Metal Coatings
    . Thus, the best barrier is one that resists "broadband " corrosion. Physical integrity of the coating is as important as its chemical barrier properties in many applications. For instance, coatings on impellers that mix abrasive slurries can be abraded quickly; coatings on pipe joints will cold-flow
  • A pinch of hafnium could extend life of turbine blades
    for thermal-barrier coatings, or TBCs. The discovery could result in significantly better reliability and durability for turbine blades, thus extending engine life. Commercial thermal-barrier coatings consist of three layers: The first is a bond coat based on nickel-aluminum compounds. The bond coat
  • MICRO:Rosenberg (March 2001)
    nitride (TiN), titanium tungsten, cobalt silicide, tungsten silicide, tantalum, and tantalum nitride. These metal compounds are used for barrier/liner processes because they form high-stress films when deposited. However, high stress, along with plasma and thermal cycling, tends to cause refractory

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