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ferromagnetic cores

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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
... possible in metal injection molding parts. The article also discusses ferromagnetic cores used in alternating current applications and some permanent magnets, such as rare earth-cobalt magnets and neodymium-iron-boron (neo) magnets. ferritic stainless steel ferromagnetic cores hysteresis loss...
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
... classification corrosion resistance ferromagnetic properties magnetic cores magnetic testing methods magnetically soft materials power generation applications MAGNETIC MATERIALS are broadly classified into two groups with either hard or soft magnetic characteristics. Hard magnetic materials...
Image
Published: 01 January 1990
Fig. 10 Triangular flux line lattice in a lead-indium alloy type II superconductor. Small ferromagnetic particles are attracted to the points of high-field density in the core of the flux lines. The flux line positions are seen using a replica in the transmission electron microscopy (TEM More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006442
EISBN: 978-1-62708-190-0
... to the successful application of MBN measurement and signal interpretation. The article provides an overview of basic magnetic phenomena and dynamics in ferromagnetic materials that underlie the origin of MBN emissions. It describes the changes in the domain structure of the ferromagnetic material under an applied...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
... Abstract This article discusses the ferromagnetic properties of soft magnetic materials, explaining the effects of impurities, alloying elements, heat treatment, grain size, and grain orientation on soft magnetic materials. It describes the types of soft magnetic materials, which include high...
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
... by the engineering print. Unless specified otherwise, the following are required periodic tests: surface hardness, depth of hardening layer (case depth), microstructure of hardened layer, and heat treated pattern length and position. Some companies require additional testing for core hardness and core microstructure...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005896
EISBN: 978-1-62708-167-2
.... The article also discusses the magnetic properties of diamagnetic, paramagnetic, ferromagnetic, ferrimagnetic, antiferromagnetic, and metamagnetic materials. coefficient of linear thermal expansion density electrical resistivity ferrous metals magnetic properties nonferrous metals nonmetallic...
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
... to understanding the properties of magnetic materials. Magnetic materials are classified as either magnetically soft or magnetically hard. Soft magnetic materials are typically used for applications where small, applied magnetic fields are used to switch the magnetization direction (i.e., transformer cores...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
... Abstract Magnetic-particle inspection is a method of locating surface and subsurface discontinuities in ferromagnetic materials. This article discusses the applications and advantages and limitations of magnetic-particle inspection. It describes magnetic fields in terms of magnetized ring...
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
... are tensors and can be expressed in terms of matrices. A good example is laminated magnetic core consisting of insulated sheets. The electric field intensity ( E ext ) is caused, for instance, by electrochemical, photovoltaic, or other types of forces. The continuity equation for the conduction...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005888
EISBN: 978-1-62708-167-2
... of the workpiece but within its internal areas as well. This creates favorable conditions to quickly achieve surface-to-core temperature uniformity and leads to low process cycle time (high productivity) with repeatable high quality while using minimal floor space. Practically immediate readiness of induction...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002475
EISBN: 978-1-62708-194-8
... unit volume. Figure 4 shows dramatic reductions in the volume required for 1 MB (megabyte) of electronic memory storage from 1950 to 2010, a sixty-year interval during which the technology changed from small magnetic (ferrite) cores to IC chips ( Ref 13 ). Packaging had evolved as well...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... Abstract Magnetic-particle inspection is a nondestructive testing technique used to locate surface and subsurface discontinuities in ferromagnetic materials. Beginning with an overview of the applications, advantages, and limitations of magnetic-particle inspection, this article provides...
Book Chapter

By Mark Cowell
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001393
EISBN: 978-1-62708-173-3
..., a temperature controller, and an iron-plated copper tip. Many different materials, such as high-resistance metal alloys and ceramic and ferromagnetic materials, are used to develop the high resistance of the heater. The soldering tip conducts the heat from the heater to the joint. A temperature controller...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005761
EISBN: 978-1-62708-165-8
... an attractive blend of properties (e.g., high strength and hardness of the component surface layers and toughness of its core that may not be affected by the heat). Such capabilities are not feasible with furnace heating processes, which are slower and heat the entire workpiece. Energy savings: In addition...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005895
EISBN: 978-1-62708-167-2
...-known transformer principle with an iron core, consisting of one or more primary coils with multiple turns around a closed, ferromagnetic core and a short-circuited secondary winding. The current flowing through the primary coil of the inductor generates a varying EMF that primarily flows through...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005516
EISBN: 978-1-62708-197-9
..., and ferromagnetic ( Ref 1 , 11 , 12 ). Relative magnetic permeability of paramagnetic materials is slightly greater than 1 (μ r > 1). The value of μ r for diamagnetic materials is slightly less than 1 (μ r < 1). Due to insignificant differences of μ r for both paramagnetic and diamagnetic materials...
Book Chapter

By W.L. Johnson
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001095
EISBN: 978-1-62708-162-7
... the planar-flow casting method. Such sheets are used to wind power-distribution transformer cores. Vapor Quenching and Electrodeposition As mentioned earlier, there are other methods of producing materials that have atomic structures and physical properties similar to those of configurationally...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005429
EISBN: 978-1-62708-196-2
... after the groups that developed or support the method. All electronic structure methods must deal with the large changes in the electron distribution observed in atoms, molecules, and solids. Some of the electrons are strongly bound to the nuclear sites (core states) and are very similar to that found...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006081
EISBN: 978-1-62708-175-7
...-bonded saw segments. Annealed electrolytic iron powder is used in the manufacture of ferromagnetic cores for radios, televisions, and other audio devices. The common designs of ferromagnetic cores made from these powders are the E-type, C-type, and toroids. Electrolytic iron powder is also used...