High temperature surface protection
Abstract
Alloys of the MCrAlX type are the basis for high temperature surface protection systems in gas turbines. M can be one or more of Ni, Co, or Fe and X denotes a reactive metal added to enhance oxide scale adherence. The selection and formation as well as the oxidation, hot corrosion and thermal fatigue performance of MCrAlX coatings are discussed. Coatings covered range from simple aluminides formed by pack cementation to the more advanced physical vapor deposition overlay coatings and developmental plasma spray deposited thermal barrier coatings.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1978
- Bibcode:
- 1978STIN...7817340L
- Keywords:
-
- Gas Turbines;
- High Temperature Environments;
- Protective Coatings;
- Surface Finishing;
- Cementation;
- Hot Surfaces;
- Metal Coatings;
- Thermal Fatigue;
- Vapor Deposition;
- Fluid Mechanics and Heat Transfer