Direct laser cladding of stellite coatings and selection of process parameters
Abstract:
The direct laser cladding technique is applied for preparation of Co-based stellite SF6 protective coatings on the chromium steel base of a composition designed for the steam turbine blades. The cw 1.5 kW CO2 laser stand equipped with the multi-stream nozzle characterized by a powder feeding coaxial with the laser beam is used. It is observed that the increase of the base preheating temperature and the average temperature of the coating reduces the cracking susceptibility of the laser clads. This is accompanied by the decrease of the corrosion and wear resistances.
Año de publicación:
2005
Keywords:
- Stellite powders
- Laser cladding
- Protective coatings
Fuente:
scopusTipo de documento:
Conference Object
Estado:
Acceso restringido
Áreas de conocimiento:
- Ingeniería de manufactura
- Ingeniería de fabricación
Áreas temáticas:
- Ingeniería y operaciones afines
- Metalurgia y productos metálicos primarios
- Fabricación
