| Summary: | 碩士 === 國立成功大學 === 材料科學及工程學系 === 87 === Aluminum Nitride (AlN) has been used for substrate application because its extremely high conductivity, good electrical resistance and low thermal expansion coefficient. This ceramic is also know as good millitary armor material for reasons that is still under investigation. One drawback with this material for structural application is its low fracture toughness. Aluminum metal is therefore added into AlN in this study for the purpose of improving toughness.
This study is on mechanical properties of AlN/Al composites. The experimental process is described as follows. First, sintering porous AlN preform in N2、1500℃、1 hour, then by squeeze casting process, molten pure Al was infiltrated into AlN preform to make AlN/Al composite. The produce materials were subjected to examination, microstructure, physical and mechanical properties.
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