Surface Treatment of AZS Refractories Using High-Density Infrared Heating

摘要

High-density infrared (HDI) technology is relatively new to the materials processing area and is gradually being exploited in coatings and surface modification. To date, it has been applied mainly to the treatment of metals. However, recently it has been applied to the surface treatment of ceramic materials. The HDI processing facility at ORNL uses a unique technology to produce extremely high-power densities of up to 3.5 kW/cm{sup}2. Instead of using an electrically heated resistive element to produce radiant energy, a controlled and contained plasma is used. The advantages of the technology include the following: 1. Compared to laser technology, it can cover larger areas. 2. It consists of short-wavelength radiation (0.2-1.2μm). 3. It has the ability to produce fast heating and cooling rates. 4. It is capable of attaining very high temperatures. 5. It has potential for continuous processing.