Influence of temperature on energy loss of dielectromagnetics

Szczygłowski

Chwastek

et al. 2015

COMPEL

Purpose – The purpose of this paper is to examine the relationships between processing conditions and magnetic properties of cores made of Soft Magnetic Composite (SMC) Somaloy 500. Design/methodology/approach – The effects of compaction pressure and hardening temperature may be combined considering SMC density. This quantity may be chosen for optimization of properties of ready-made cores. In order to describe hysteresis loops the phenomenological model based on hyperbolic tangent transformation is applied. Findings – SMC density affects substantially the shape of hysteresis loop. The paper provides a number of charts useful for checking how the parameters of the hysteresis model are affected. Research limitations/implications – The present study considers just one composition of the SMC and one type of lubricant. Future research shall be devoted to verification of the approach on a wider class of SMCs. Practical implications – Material density may be a relevant quantity in optimization of magnetic properties of ready-made SMC cores. The simple hysteresis model based on the, “effective field” concept and Takács’ idea of hyperbolic tangent transformation may be useful for description of hysteresis curves of SMC cores. Model parameters are sensitive against variations of material density. Originality/value – The results of the analysis may be useful for designers of magnetic circuits made of SMCs.

Section: Introductionmentioning

confidence: 99%

A correlation of magnetic properties with material density for soft magnetic composite cores

Szczygłowski

Chwastek

et al. 2015

COMPEL

“…These two descriptions are applied to hysteresis loops of SMC cores produced under different processing temperatures. Optimization of the processing conditions for the magnetic cores is important for technologists [1][2][3][12][13][14]. Attempts to correlate the parameters of some hysteresis models with the parameters of the processing technologies for soft magnetic materials, similar in spirit to the approach presented in the present paper, have been reported previously e.g.…”

Section: Introductionmentioning

confidence: 87%

Modeling Hysteresis Loops of SMC Cores

Chwastek

Szczygłowski

et al. 2015

SSP

Hard and soft magnetic composites with modified magnetic properties

World Journal of Engineering

Przybylski²

2011

The paper deals with methods of tailoring magnetic properties of soft and hard magnetic composites. Comparison of magnetic properties of injection moulding and compression moulding Nd-Fe-B magnets are presented. Magnetic properties of Nd-Fe-B bonded magnets were tailored by different ways such as: amount of resin, addition of barium ferrite, Al or Fe powders. Influence of technological parameters such as compression pressure, time and temperature of curing on magnetic parameters of Nd-Fe-B bonded magnets are presented in the paper. Magnetic properties of soft magnetic composites made of Fe, Ni, Co are presented in the paper. Influence of technological parameters such as compression pressure, time and temperature of curing on magnetic parameters of iron soft magnetic composites are presented also in the paper.