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Fully Dense Mn 3Zn 0.7Ge 0.3N /Al Composites with Zero Thermal Expansion Behavior Around Room Temperature

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Document pages: 9 pages

Abstract: The fully dense, low-reacted Mn3Zn0.7Ge0.3N Al composites were successfully fabricated by pressure infiltration technology. The large positive thermal expansion of Al is effectively suppressed by adding Mn3Zn0.7Ge0.3N component. Nearly zero thermal expansion (α=-0.41×10-6K-1) is achieved between 35 and 70°C in the composite with 30vol. Mn3Zn0.7Ge0.3N. Moreover, the bending stress and modulus of Mn3Zn0.7Ge0.3N Al composites increase gradually with increasing Mn3Zn0.7Ge0.3N content. This low thermal expansion, good mechanical properties materials is beneficial to electronic packaging and precision field.

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