Process Development of Low-Cost AgNi and AgFe Contact Materials with no Range of Solid Solubility

Shae K. Kim

doi:10.4028/www.scientific.net/AMR.47-50.873

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Characterization of a Functionally Graded Hypereutectic Al-Si Alloy Produced by Centrifugal Method
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Towards a Generalized Macro-Level Damage Model for Unidirectional Composites
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Process Development of Low-Cost AgNi and AgFe Contact Materials with no Range of Solid Solubility
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Modeling of the Cyclic Behavior of Shape Memory Alloys during Localized Unstable Mechanical Response
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Pseudoelastic Behavior of Cu–Al–Be Shape Memory Wires Subjected to Varied Loading and Unloading Cycles
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 47-50Process Development of Low-Cost AgNi and AgFe...

Process Development of Low-Cost AgNi and AgFe Contact Materials with no Range of Solid Solubility

Abstract:

AgNi and AgFe are known as contact materials with high workability and low contact resistance for medium to weak current contacts. However, AgNi and AgFe contact materials are difficult to manufacture using conventional melting and casting procedure because they exhibit no range of solid solubility of Ni and Fe in Ag for all temperature range. The purpose of this research is to develop a process for low-cost AgNi and AgFe contact materials based on solidification process control. AgNi and AgFe contact materials were produced by rotation cylinder method (RCM). The hardness value of AgNi and AgFe contact materials by RCM were higher than that of AgNi and AgFe contact materials produced by conventional powder metallurgy and co-precipitation processes. The higher hardness values of contact materials produced by RCM may be attributed to the uniform distribution and small size of Ni and Fe particles in Ag matrix.