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remanent magnetism

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000131
EISBN: 978-1-62708-312-6
... mass but also generates internal demagnetizing fields. Pores hinder domain wall movement in the same way as nonmagnetic impurities. The effect of porosity is notably stronger in the induction values of PM magnetic materials. Both the maximum induction, B max , and the remanent induction, B r...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240303
EISBN: 978-1-62708-251-8
... the solid curve and reaches the residual magnetization, or remanence, B r , when H = 0. As the magnetizing force is decreased, it becomes zero at the coercive force, H c . As the reversing magnetizing force becomes even greater, the magnetization becomes reversed and eventually reaches − B s...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730051
EISBN: 978-1-62708-283-9
.... 5.7 Two domain boundary possibilities in iron, 180° and 90° domain walls. Source: Ref 5.1 There are two main types of magnets: hard and soft. Hard magnetic materials are permanent magnets. They are difficult to demagnetize. The hysteresis is very large. The remanence, B r , and coercive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6
... , July , 1982 , p 10 11. Bobart G. F. , Heat Treating , Vol 18 , No. 5 , May , 1986 , p 18 12. McMaster R. C. , et al. , Metals Handbook , 8th Ed. , Vol 11 , ASM , Metals Park, OH , 1976 , p 93 13. Lewis D. M. , Magnetic and Electrical Methods...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170614
EISBN: 978-1-62708-297-6
... Abstract This article discusses the compositions, structures, and properties of the most common grades of soft magnetic metals and permanent magnet alloys. It explains how alloying additions and impurities affect the magnetic properties of these materials, which include commercially pure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720183
EISBN: 978-1-62708-305-8
... to overcome the remanent field in the part Demagnetization might not be necessary if: Parts are made of magnetically soft steel having low retentivity; such parts usually will become demagnetized as soon as they are removed from the magnetizing source The parts are subsequently heated above...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... to the Determination of the Remanent Life of High Temperature Turbine Rotors, ” Paper C300/87, Institute of Mechanical Engineers , London , 1987 43. Nitta A. and Kuwabara K. , “ Effect of Creep Fatigue Interaction on Life Expenditure of a Turbine Rotor, ” Report E277002, Central Research...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
.... and Whitehead J.R. , Ed., American Society of Mechanical Engineers , New York , 1983 , p 307 - 314 40. Cane B.J. and Shammas M.S. , “ A Method for Remanent Life Estimation by Quantitative Assessment of Creep Cavitation on Plant, ” Report TPRD/L/2645/N84, Central Electricity Generating...