Effect of nano-AlN addition on thermal diffusivity and mechanical strength of porous AL2O3 ceramic composites

Preparation of Al2O3‐mullite thermal insulation materials with AlF3 and SiC as aids by microwave sintering

“…The thermal diffusivity of these composites was in the range from 0.75 to 2.2 mm 2 /s, the measured temperature was selected from 25°C to 1000°C. 7 These researchers have successfully prepared porous alumina ceramics with excellent thermal conductivity, but the thermal shock resistance have not been mentioned. Whether these porous alumina ceramics can be used in extremely harsh environments requires further experimental confirmation.…”

“…Daniela Herman and coworkers fabricated porous Al 2 O 3 ceramic at 800°C using nano‐AlN addition, with a porosity of 31.0%–34.6%. The thermal diffusivity of these composites was in the range from 0.75 to 2.2 mm 2 /s, the measured temperature was selected from 25°C to 1000°C 7 . These researchers have successfully prepared porous alumina ceramics with excellent thermal conductivity, but the thermal shock resistance have not been mentioned.…”