समीक्षा
The development of low-cost coating for corrosion and environmentally sensitive metallic substrates is inevitable in high temperature application. One such low-cost processing techniques is slurry coating. This coating process involves spray the formulated coating material applied to the area to be coated and heated in an ambient or under inert gas atmosphere. A major part of research and development activates involves preparation of suitable slurry.
Key Features
The slurry process makes new opening for developing various metal ceramic and composites coating with following merits.
- Low cost
- Lack of access to machinery capable of other deposition methods
- Flexibility to apply the coating to complex surfaces
- Composites of metal-ceramic, polymer-ceramics, metal-polymers etc.,
Thick Copper coating on Al2O3
Potential Applications
- Thermal protection shields for low melting substrates such as aluminium and polymer composites.
- Copper-glass composites for high temperature electronics.
- Slurry based environmental barrier coatings (EBC) on silicon carbide.
अवस्था
- Exploratory studies on aluminium and polymeric substrates for thermal protection.
- Copper thick printing on alumina and aluminium nitride.