Journal Article

Metal Amorphous Nanocomposite (MANC) Alloy Cores with Spatially Tuned Permeability for Advanced Power Magnetics Applications

Yu, Y., Byerly, K., Noebe, R., Feichter, G., Beddingfield, R., Bhattacharya, S., Moon, S. R., Bowman, R., Leary, A. M., Simizu, S., Ohodnicki, P. R., McHenry, M. E., Keylin, V.

2018

Overview

Metal amorphous nanocomposite (MANC) alloys are an emerging class of soft magnetic materials showing promise for a range of inductive components targeted for higher power density and higher efficiency power conversion applications including inductors, transformers, and rotating electrical machinery. Magnetization reversal mechanisms within these alloys are typically determined by composition optimization as well as controlled annealing treatments to generate a nanocomposite structure composed of nanocrystals embedded in an amorphous precursor. Here we demonstrate the concept of spatially varying the permeability within a given component for optimization of performance by using the strain annealing process. The concept is realized experimentally through the smoothing of the flux profile from the inner to outer core radius achieved by a monotonic variation in tension during the strain annealing process. Great potential exists for an extension of this concept to a wide range of other power magnetic components and more complex spatially varying permeability profiles through advances in strain annealing techniques and controls.

• Publisher: Springer US,Springer Nature B.V,Springer
• Subject: Amorphous materials / Anisotropy / Annealing / Chemistry/Food Science / Earth Sciences / Energy conversion efficiency / Engineering / Environment / Inductors / Iron alloys / Magnetic permeability / Magnetization reversal / Manufacturing / MATERIALS SCIENCE / Mechanical properties / Nanocomposites / Nanocrystals / Optimization / Permeability / Physics / Recent Developments in the Processing of Magnetic Materials / Rotating machinery / Solids / Strain annealing / Temperature