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magnetically soft components

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... Abstract Powder metallurgy (PM) techniques are effective in making magnetically soft components for use in magnetic part applications. This article provides an account of the factors affecting magnetism, permeability, and hysteresis losses. It includes information on the magnetic properties...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005846
EISBN: 978-1-62708-167-2
... and limited frequency range (up to about 30 kHz). Soft Magnetic Composites Soft magnetic composites consist of a soft-magnetic component (typically iron and iron-base alloy powder metal) and a dielectric component (usually an organic polymer binder). The soft-magnetic component provides a favorable...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001093
EISBN: 978-1-62708-162-7
... materials discussed in this article should be annealed as a finished (or nearly finished) component to develop their optimum soft magnetic properties. Even fully processed grades of silicon steel may require a low-temperature stress-relief heat treatment for removal of fabrication stresses. Most alloys...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
... resistivity, are a function of the density of the component. Higher saturation induction, residual induction, and maximum permeability result from increased density, whereas coercive force and resistivity are lowered. Soft magnetic P/M parts, including those containing 0.45 to 0.80% P, are covered in ASTM...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003788
EISBN: 978-1-62708-177-1
.... The article also illustrates the microstructure of different types of soft magnetic material and permanent magnets. bitter technique domain imaging Faraday method Lorentz transmission electron microscopy magnetic force microscopy magnetic materials magnetism magneto-optical Kerr method materials...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005841
EISBN: 978-1-62708-167-2
... inductance to get the coil to tune properly with the induction generator so that sufficient power can be achieved to perform the desired brazing application. Generally speaking, the following classes of materials are used for controlling magnetic flux: steel laminations, soft magnetic composites...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006476
EISBN: 978-1-62708-190-0
... in gears and other steel components ( Ref 4 ). The mechanism of detection is similar to that of grinding burn, where soft microstructures exhibit higher magnetic permeability and lower coercivity. These properties result in higher MBN signal amplitude. Conversely, a harder microstructure results in lower...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005871
EISBN: 978-1-62708-167-2
.... In addition, excessive grain growth can cause a reduction in part performance. Seams, Laps, and Other Magnetic Particle Indications Seams are a defect created by the steel rolling process rather than the induction-hardening process. However, they will remain in the induction-hardened component...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005839
EISBN: 978-1-62708-167-2
... and dynamic. The static component initially pulls the inductor in toward the part in the cold magnetic state and then pushes it away from the part when it is nonmagnetic. The dynamic component oscillates around the static component at double the electric frequency ( Fig. 14 ). The level of force in the system...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005886
EISBN: 978-1-62708-167-2
... that mitigated the microstructure changes in the 420 stainless steel and eliminated the problems of soft spots in the final components. This shows the importance of understanding and controlling the thermal conditions during induction brazing and heat treatment processes. Brazing processes are very flexible...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005877
EISBN: 978-1-62708-167-2
... With reference to the relations between vectors E , P , and D , nonconductive environments can be divided into linear and nonlinear, soft and hard, isotropic and anisotropic. For magnetics, an external magnetic field—described by the vector H ext , being a function of space coordinates and time...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... of large components. Although in-process, magnetic-particle inspection is used to detect discontinuities and imperfections in material and parts as early as possible in the sequence of operations, final inspection is required to ensure that rejectable discontinuities and imperfections detrimental...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006020
EISBN: 978-1-62708-175-7
.... These are made using soft tooling because tool wear is not an initial issue. Production at the high side includes components for cell telephones, computers, watches, eyeglasses, and orthodontic brackets. Parts for tablet computers include buttons, earphone jack, and power adaptor. Shape Complexity Shape...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005857
EISBN: 978-1-62708-167-2
... to provide the maximum sensitivity of detection. This is best achieved by conducting two successive tests; in the second test, the magnetic field should be at an angle of 90° to the field in the first test. This ensures a sizeable field component at right angles to any discontinuity. Using modern...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003049
EISBN: 978-1-62708-200-6
... the basis for numerous devices that rely on soft or hard (permanent) magnets. The soft magnets include materials such as the ferrites and garnets, while the hard magnets include magnetoplumbites and γ-Fe 2 O 3 . The applications are diverse, from items such as microwave components (e.g., magnetrons...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006110
EISBN: 978-1-62708-175-7
.... and Ryan J , Iron-Phosphorus Alloys for Magnetic Application , Progress in Powder Metallurgy , Vol 43 , Metal Powder Industries Federation , 1987 , p 323 12. Lall C. and Baum L. , High Performance Soft Magnetic Components by P/M and MIM , Modern Developments in Powder...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005863
EISBN: 978-1-62708-167-2
... testing methods, namely, magnetic particle testing, ultrasonic testing, and eddy current testing to evaluate induction-hardened components. case depth frequency induction hardening inductors inspection nondestructive testing quenching surface hardness evaluation Introduction Metals...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001241
EISBN: 978-1-62708-170-2
... of such composites depends on understanding each of the components of the composite, its properties, and its response to finishing. It is also important to understand whether a composite is dominated by a “hard” or “soft” matrix, as outlined in Table 3 . This distinction is crucial in developing rational...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001094
EISBN: 978-1-62708-162-7
... Magnetically soft materials differ from permanent magnet materials not only in their higher permeabilities, but also, and more significantly, in their much lower resistance to demagnetization. The best magnetically soft materials have H c values of virtually zero. The hysteresis loop of such a material...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003154
EISBN: 978-1-62708-199-3
... material, component shape and magnetic circuit arrangement. hysteresis alloys irreversible loss magnetic field stability motors permanent magnetic materials reversible loss PERMANENT MAGNET is the term used to describe solid materials that have sufficiently high resistance to demagnetizing...