Manufacturing Processes for Permanent Magnets: Part II—Bonding and Emerging Methods

Abstract

Permanent magnets produce magnetic fields and maintain the field even in the presence of an opposing magnetic field. They are widely used in electric machines, electronics, and medical devices. Part I reviews the conventional manufacturing processes for commercial magnets, including Nd-Fe-B, Sm-Co, alnico, and ferrite in cast and sintered forms. In Part II, bonding, emerging advanced manufacturing processes, as well as magnet recycling methods are briefly reviewed for their current status, challenges, and future directions.This article is published as Cui, Jun, John Ormerod, David S. Parker, Ryan Ott, Andriy Palasyuk, Scott McCall, Mariappan Parans Paranthaman et al. "Manufacturing Processes for Permanent Magnets: Part II—Bonding and Emerging Methods." JOM 74, no. 6 (2022): 2492-2506. DOI: 10.1007/s11837-022-05188-1. Copyright 2022 The Author(s). Attribution 4.0 International (CC BY 4.0). Posted with permission. DOE Contract Number(s): AC05-00OR22725; AC02-07CH11358; AC52- 07NA27344