Thermal Conductivity and Cathodoluminescence of AlN Ceramics Sintered with Ca3Al2O6 as Sintering Additive
Aluminum nitride (AlN) ceramics with various amounts of Ca3Al2O6 (C3A) as a sintering additive were sintered at 1880°C for 50 h in N2 atmosphere. The thermal conductivity of AlN ceramics increased with increasing amount of C3A in the range from 0.5 to 4.8 mass%. Cathodoluminescence (CL) intensity attributed to oxygen-induced defects decreased with increasing amount of C3A. From the results, the increase of the thermal conductivity was considered to relate to the decrease of the oxygen-induced defects by increasing amount of C3A.
Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang
T. Honma et al., "Thermal Conductivity and Cathodoluminescence of AlN Ceramics Sintered with Ca3Al2O6 as Sintering Additive", Advanced Materials Research, Vols. 11-12, pp. 179-182, 2006