Ceramic Reflector

Ceramic Reflector

Introduction to ceramic reflector

The material of the ceramic reflector is 99% Al2O3. Its green body is fired at a suitable temperature to retain the proper porosity and strength. The surface of the ceramic reflector is coated with a high reflectivity ceramic glaze, so compared with the gold-plated reflector, it has long service life and diffuse reflection.

Production Process

Preparation of the green body

Preparation of glaze slurry: raw material weighing – grinding – screening

Glazing: glazing by spraying

Glaze burning: the glazed product is burning at a high temperature

Inspection: Appearance inspection, dimensional measurement, and reflectance measurement

Packaging

Prime Features

Surfaces can be sealed and coated with a solarization-resistant glaze to give high bulk reflectivity

97% reflectance efficiency at 600-1000nm

Reflectance efficiency exceeds 95% across the wavelength range 400-1200nm (see curve)

Controlled porosity

Good thermal conductivity

High electrical resistivity

Precautions for the use of ceramic reflectors

In the process of transportation, storage and assembly, it is prohibited from serious external damage, such as falling off to the ground and the size is not suitable for forced pressing into the shell

The semi-glazed ceramic reflector must be sealed with the shell to prevent it from inhaling a large amount of coolant, resulting in a decrease in power

During assembly and maintenance, it is forbidden to scratch the reflective surface of the ceramic to decreasing the reflectivity

In the short-wavelength (eg 755nm) high-temperature systems, it is important to pay attention to the choice of cooling system piping and equipment materials for avoiding free metal oxides contaminating the ceramic surface