Spray-deposited Al-Si (Osprey CE) alloys and their properties
Spray-deposited Al-Si (Osprey CE) alloys and their properties
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DOI：
10.1002/mawe.200390079
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发表时间：
2003-04-01
影响因子：
1.1
通讯作者：
Ogilvy, AJW
中科院分区：
文献类型：
--
作者：
Jacobson, DM;Ogilvy, AJW
Osprey Metals Ltd.开发了一种新的轻质低膨胀铝硅合金系列，以适应电子应用，其含有30至70重量%的铝硅合金。铝。它们使用Osprey喷雾沉积工艺生产，该工艺实现了均匀和各向同性的特性。它们的有利物理特性结合了低热膨胀、高导热性和低密度，特别适合于封装电子电路。这些CE（受控膨胀）合金易于使用标准机床加工成严格的公差，并且可以毫无困难地电镀金、银或镍。本文着重于与AMTT合作进行的这些合金的机械（弯曲强度）和热机械性能（CTE，热扩散率和比热）的测量。的属性测量与以前在其他地方测得的一致，除了CTE值，这偏离显着，并在方差与预测值从规则的混合物。在更接近于温度平衡的条件下进行的一系列简短的后续测量中解决了这一差异。
Osprey Metals Ltd. has developed a new family of lightweight, low expansion aluminium-silicon alloys to suit electronic applications, containing between 30 and 70 wt.% aluminium. They are produced using the Osprey spray deposition process, which achieves homogeneous and isotropic properties. Their advantageous physical characteristics, combining low thermal expansion, high thermal conductivity and low density are particularly suited for packaging electronic circuitry. These CE (controlled expansion) alloys are easy to machine to tight tolerances using standard machine tools and they can be electroplated with gold, silver or nickel finishes without difficulty. This paper focuses on the measurement of mechanical (flexural strength) and thermo-mechanical properties (CTE, thermal diffusivity and specific heat) of these alloys, carried out in collaboration with AMTT. The property measurements were consistent with those measured previously elsewhere, apart from the CTE values, which deviated significantly and were at variance with values predicted from a rule of mixtures. This discrepancy was resolved in a short follow-up series of measurements carried out under conditions corresponding more closely to temperature equilibrium.