Joining of Copper and Iron Metals by using Powder Metallurgy Technique
Journal Title: International Journal of Engineering & Technical Innovations IJETI - Year 2017, Vol 4, Issue 2
Abstract
In the present work two different types of powder are chosen for brazing, Copper-Iron (Fe) powders. Cu weight (5 gram), iron powder (5 gram) then the specimen were compacted with varying loads like 4-5-6 tonnes with the help of press machines, the compacts were in the curvaceous shape as cylinder. The compact material were sintered below their melting point in argon atmosphere with a consistent heating rate and holding for 2 to 3 hours followed by natural cooling, the specimens were cross sectioned using abrasive cutting machine, the specimen were mounted and polished for macroscopic and microscopic observation. The mounted specimens were polished with emery paper of grit size 1/0, 2/0, 3/0, and 4/0 provides smooth and shiny finish and were subjected to chemical etching using nital solution. To study macro and microstructures of the specimen optical and scanning electron microscope was used. Form the macrostructures it was observed that there is no presence of cracks in all the joints. It was observed that with the increases in compaction load there is a better bonding and strength between the joints. Microstructures did not show any presence of intermetallic phase. Form the hardness data it was confirmed that there is a presence of intermetallic phase due to marginal variation in the hardness.
Authors and Affiliations
Mohit Kumar Kuldeep Malik
Keywords
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