Fabrication and Residual Stresses of Aluminum Nitride Ceramics Sintered at High-Pressure
High-density AlN ceramics were fabricated without sintering additives at high pressure (5.0 GPa) and temperature (1300-1700 °C). The sintered bodies were characterized by XRD and micro-Raman spectroscopy (MRS). The values of residual stresses due to the distortion of the AlN lattice were assessed using the Micro-Raman Spectroscopy (MRS). Residual compression stress of the AlN ceramics sintered at 5.0 GPa and 1700 °C for 125 min is -2.0 GPa. The residual compression stress increased according to the extension of the sintering time.
Yansheng Yin and Xin Wang
X. L. Li et al., "Fabrication and Residual Stresses of Aluminum Nitride Ceramics Sintered at High-Pressure", Advanced Materials Research, Vols. 79-82, pp. 2215-2218, 2009