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amorphous materials

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Published: 15 December 2019
Fig. 20 Structure factors, F (θ), of (a) crystalline and (b) amorphous materials, schematically plotted as a function of θ More
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003836
EISBN: 978-1-62708-183-2
... them from materials that are truly amorphous on the atomic scale. Glassy metals have seen practical applications that exploit many of these properties, but they are also interesting as model materials for probing the influence of atomic structure and chemical composition on the corrosion process...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001762
EISBN: 978-1-62708-178-8
... Introduction The diffraction pattern of any material can be analyzed directly to obtain inter-atomic distance information. When the sample of interest contains a random orientation of atomic configurations, as is normally the case for so-called amorphous materials, it is necessary to collect only a one...
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
... of producing metallic glasses. Further, it will be shown that the final glassy state produced by quenching a melt can also be achieved by a variety of other methods in which the parent phase is not a liquid. It is traditional to refer to materials produced by methods other than melt quenching as amorphous...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006670
EISBN: 978-1-62708-213-6
... Abstract This article introduces various techniques commonly used in the characterization of semiconductors, namely single-crystal, polycrystalline, amorphous, oxide, organic, and low-dimensional semiconductors and semiconductor devices. The discussion covers material classification...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001468
EISBN: 978-1-62708-173-3
... Abstract This article discusses the material combinations, design details, and fabrication processes considered in the adhesive bonding or melt-fuse interface (amorphous bond) bonding method of joining resin-matrix composites to metals. adhesive bonding bolted joints bonded joints...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003287
EISBN: 978-1-62708-176-4
... amorphous solids creep testing CREEP DEFORMATION is any permanent inelastic strain that occurs when a material is subjected to a sustained stress. The rate at which this deformation occurs depends not only on the magnitude of the applied stress, but also on time and temperature. Thus...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006922
EISBN: 978-1-62708-395-9
.... There are two primary types of thermoplastic materials, which are classified by molecular arrangement: amorphous and semi-crystalline. When choosing a plastic, deciding whether the material will be amorphous or semi-crystalline will be critical prior to designing the mold. Amorphous Plastics Plastic...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006867
EISBN: 978-1-62708-395-9
... as the environmental temperature passes through what is called the “glass transition temperature” ( T g ) ( Ref 24 ). Figure 4 shows how the modulus of semi-crystalline and amorphous polymers changes as temperature is increased or decreased. At temperatures well below T g , polymers behave like a glassy material...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
...-purity iron, low-carbon irons, silicon (electrical) steels, nickel-iron alloys, iron-cobalt alloys, ferritic stainless steels, and ferrites (ceramics). Soft magnetic amorphous materials are being produced commercially; their characteristics are also covered in this article. Ferromagnetic Properties...
Image
Published: 31 December 2017
Fig. 4 Diagram of diamondlike carbon materials based on hydrogen content and sp2- and sp3-hybridized carbon-carbon bonding. a-C, amorphous carbon; ta-C, tetrahedrally bonded amorphous carbon. Adapted from Ref 20 More
Image
Published: 01 January 1986
Fig. 16 Field derivative of absorption in amorphous YFe 2 measured at 300 K and 10.8 GHz. Note the shift in S 1 as the field is rotated from the parallel (a) to the perpendicular (b) geometry, indicating the presence of a thin layer of ferromagnetic material. Bulk amorphous YFe 2 More
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001286
EISBN: 978-1-62708-170-2
... to accommodate the lattice mismatch without producing dislocation networks. This latter condition produces a “strained layer superlattice” structure ( Ref 25 ). At the other extreme of growth are amorphous materials where rapid quenching, bond saturation, limited surface diffusion, and the lack of substrate...
Image
Published: 01 January 1986
Fig. 1 Magnetic phase diagrams. (a) Zero field phase diagram for an amorphous alloy series (Fe x Ni 1− x ) 75 P 16 B 6 Al 3 . Note the intermediate x (reentrant) region in which the material loses its ferromagnetism when T > T c or T < T f . This contrasts sharply More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... versus temperature for a typical linear polymer. Source: Ref 19 This phenomenon also manifests itself in semicrystalline polymers, where the amorphous component of the material also exhibits a T g . The T g is always lower than the melting temperature ( T m ) of a semicrystalline polymer...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002459
EISBN: 978-1-62708-194-8
.../structure/property relationships gushed forth. The new, high-resolution techniques were generally applicable to all types of materials. The crystalline material concepts useful in metals were tested on crystalline ceramics; the amorphous material concepts of plastics and glassy ceramics were applied...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001751
EISBN: 978-1-62708-178-8
... diagram for an amorphous alloy series (Fe x Ni 1− x ) 75 P 16 B 6 Al 3 . Note the intermediate x (reentrant) region in which the material loses its ferromagnetism when T > T c or T < T f . This contrasts sharply with high x alloys in which ferromagnetism prevails from T c to 0 K...
Image
Published: 01 November 2010
Fig. 15 Al 2 O 3 /yttrium-aluminum garnet (YAG) eutectic ceramics. (a) Dependence of high-temperature flexure strength on processing. Transmission electron microscopy revealing (b) the presence of an amorphous phase at the grain boundary in the sintered material and (c) a perfect interface More
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... is the area under the exotherm. Some slow-crystallizing materials, such as poly(ethylene terephthalate) and polyphthalamide, undergo low-temperature crystallization, representing the spontaneous rearrangement of amorphous segments within the polymer structure into a more orderly crystalline structure...
Image
Published: 01 January 1986
Fig. 25 Conventional TEM bright-field images and associated diffraction patterns from a ceramic containing crystalline and amorphous phases. (a) A TEM bright-field image of a crystal of Li 3 PO 4 in a matrix of Li 2 O-Al 2 O 3 -SiO 2 glass containing P 2 O 5 . (b) The diffraction pattern More