Elastic properties of aluminum nitride |
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| Institution: | 1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi''an Jiaotong University, Xi′an 710049, China;2. State Key Laboratory of Traction Power, School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The elastic moduli and their temperature and pressure derivatives for sintered, isotropic, polycrystalline aluminum nitride ceramic have been determined. The temperature derivatives of the elastic moduli are somewhat smaller than those of other wurtzite structure semiconductors, and the pressure derivative of the shear modulus is very small. The mode Grüneisen gamma of the shear mode is essentially zero, while the elastic Grüneisen constant agrees well with the thermodynamic Grüneisen constant. Both the bulk and shear modulus conform to the Keyes relationship. |
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