Protecting Quartz Glass in Extreme Service
Quartz glass offers outstanding optical and chemical properties, but softens at high temperature and has limited mechanical strength. A plasma sprayed silicon carbide layer overcomes both weaknesses, extending the working range and life of quartz components.
Coating Benefits
- SiC melting point about 2800 C - dramatically better high-temperature stability
- Hardness above HRC 90 for strong abrasion resistance
- Resistant to most acids and alkalis
- Reinforced overall mechanical strength
Process Flow
- Surface cleaning and controlled roughening for adhesion
- Pre-heating to improve bonding
- Plasma (or flame/arc) spraying of SiC powder
- Controlled cooling and solidification
- Non-destructive inspection of quality and thickness before delivery
Применение
- Semiconductor processing quartzware
- Fibre optic connectors and protection sleeves
- Laser windows and mirrors
- Aerospace optical components and structures
