Ultra High Temperature Microwave Assist Technology
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Technical OverviewMany ultra high temperature materials require pressure or sintering additives to obtain high density. Pressure adds considerable cost to the process, and sintering additives adversely affect strength and hardness. UHT MAT was developed to enhance sintering through accelerated diffusion. The addition of microwave energy allows for hard to densify materials to be pressure-less sintered and decreases the amount of sintering additives required for full density.
- UHT MAT is the combination of conventional radiant heat 1,800°C (3272°F) and microwave energy, i.e. graphite furnace + microwave
- The addition of microwave energy enhances diffusion and assists with sintering UHT material i.e. SiC, B4C, TiB2
- UHT processing is used for materials requiring extremely high temperatures due to several factors, especially strong covalent bonding in ceramics.