Enhanced properties of functionally graded Cu–Cr powder compacts
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Indranil Lahiri
and Sanjeev Bhargava
Abstract
The paper aims to present the processing and development of functionally graded Cu – Cr materials, widely used as a monolithic contact material in vacuum circuit breakers. Simple and novel processing routes, used in this study, in addition to being cost-effective and energy efficient, generate higher density and electrical conductivity of the Cu – Cr compacts. It is shown that the use of mechanically alloyed Cu – Cr powders enhances the properties of the compacts, as compared to those prepared from as-received powders. Furthermore, explosive compaction and application of coated powder were found to result in still better properties. Scanning electron microscopy and atomic force microscopy were used to explain the scientific significance of this development.
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- Notifications
- DGM News
Articles in the same Issue
- Contents
- Contents
- Feature
- Nd–Fe–B permanent magnets a quarter century later: implications for patentability
- Micromagnetism of advanced hard magnetic materials
- Magnetism of nanostructured materials for advanced magnetic recording
- Basic
- A Study of the Al–Mg–B Ternary Phase Diagram
- Effects of Lanthanum on Magnetic Behavior and Hardness of Electroless Ni–Fe–P Deposits
- Interfacial Reactions between Lead-Free Solders and the Multilayer Au/Ni/SUS304 Substrate
- Melting Behavior of Sn–Bi Alloy Powder Compacts Observed Using Optical Dilatometry
- High-Strength Mg-Based Bulk Metallic Glass Composites with Remarkable Plasticity
- Determination of Liquidus Temperature in Sn–Ti–Zr Alloys by Viscosity, Electrical Conductivity and XRD Measurements
- The coupled FEM analysis of super-high angular speed polishing of diamond films
- Applied
- Comparison of Depth-Sensing Indentation at Ultramicroscopic Contacts by Single- and Multiple-Partial-Unload Cycles
- Sintering Behavior of ZnO: Mn Ceramics Fabricated from Sol-Gel Derived Nanocrystalline powders
- Suitability of Maraging Steel Weld Cladding for Repair of Die-Casting Tooling
- Enhanced properties of functionally graded Cu–Cr powder compacts
- Influence of Cr on the microstructure and mechanical properties of Ti–Si Eutectic Alloys
- Notifications
- DGM News