Study of Soft Magnetic Nickel-Iron Based Alloys Processed by Powder Injection Molding

Leonardo Ulian Lopes; Juliana A. Shoda; Aline Silva; Ricardo Machado; Daniel Rodrigues; Paulo A.P. Wendhausen

doi:10.4028/www.scientific.net/MSF.591-593.91

Paper Titles

Effect of Different Tempering Stages and Temperatures on Microstructure, Tenacity and Hardness of Vacuum Sintered HSS AISI T15
p.68

Sintering Sm₂Fe₁₇ Prior to Nitrogenation
p.75

Simulating Sintering Process in SmCo₅ Magnets
p.80

Processing of the Fe3Si Alloy from Prealloyed Powder Fe45Si by Metal Injection Molding
p.86

Study of Soft Magnetic Nickel-Iron Based Alloys Processed by Powder Injection Molding
p.91

The Effect of Niobium and Boron Content on Magnetic Properties and Corrosion Resistance of Pr-Fe-Co-B-Nb HD Magnets
p.96

The Effect of Niobium Content on the Curie Temperature and Microstructure of the Pr₁₄Fe_79.9-xCo₁₆B₆Nb_x Alloys
p.102

The Effect of the Processing Temperature on the Microstructures of Pr-Fe-Co-B-Nb HDDR Magnets
p.108

A Comparative Study between Low and High-Energy Milling Processes for the Production of HD PrFeCoBNb Sintered Magnets
p.114

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Study of Soft Magnetic Nickel-Iron Based Alloys Processed by Powder Injection Molding

Abstract:

Ni-Fe based soft-magnetic alloys, processed via Metal Injection Molding (MIM), were investigated regarding the influence of processing route on final magnetic properties and compared to fully dense cast materials. The process variations included high and low temperature debinding, different sintering routes and the application of hot isostatic pressing (HIP). The different densities resulting from the process variations were related to maximum magnetic permeability. Results have shown that density, in the range between 7,5g/cm³ and 8,0g/cm³, does not have significant influence on the maximum permeability, allowing cost-effective process routes. It was also verified that fullydense cast alloys still exhibits superior properties, with lower coercive fields and higher permeability, but results achieved after HIP process overcame even the values of these commercial grade alloys.