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interfacial degradation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780267
EISBN: 978-1-62708-281-5
..., resulting in the production of degraded polymer molecules. The other important parameter to consider in interfacial wear is the roughness of the counterface. For rough and hard counterfaces, the wear mode is generally that of bulk or cohesive wear. Interfacial wear is initiated only when the counterface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110603
EISBN: 978-1-62708-247-1
... the die, which may lead to defects or degradation in the repackaged parts such as die contamination, moisture-induced interfacial delamination, and cracks in the passivation layer. There may also be workmanship issues with the repackaged parts such as missing bond wires, missing die, bond wire...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... of oxide/oxide ceramic matrix composites. 21.3 Interfacial Coatings Interfacial, or interphase, coatings are often required to (1) protect the fibers from degradation during high-temperature processing, (2) aid in slowing oxidation during service, and (3) provide the weak fiber-to-matrix bond...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870537
EISBN: 978-1-62708-314-0
..., it was soon recognized that the boron fiber could react with aluminum during processing, forming brittle intermetallic compounds at the fiber interface, which degraded the fiber strength properties. Strong interfacial bonding led to reduced longitudinal tensile strengths but higher transverse strengths, while...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230221
EISBN: 978-1-62708-351-5
... energy between the liquid and vapor; and γ SV is the surface energy between solid and vapor: γ S L = γ L V + γ s v - W a In other words, the lower the solid-liquid interfacial energy γ SL is, the higher the work of adhesion, W a , and therefore...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780146
EISBN: 978-1-62708-281-5
... Abstract This article discusses the chemical susceptibility of a polymeric material. The discussion covers significant absorption and transportation of an environmental reagent by the polymer; the chemical susceptibility of additives; and thermal degradation, thermal oxidative degradation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... composite, the interface will be strong enough to transfer load from the matrix to the fiber yet weak enough to allow debonding of the fiber in the path of a crack. Interfacial, or interphase, coatings are often required to protect the fibers from degradation during high-temperature processing, aid...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780314
EISBN: 978-1-62708-281-5
... attack of structural plastics by water itself is somewhat rare. Well-known exceptions are the hot-water degradation of polycarbonate (PC) and the thermosetting polyesters. It is significant that in cases involving no attack of a plastic by an active ion, the presence of dissolved ion actually may act...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
... particulates. Compared to the conventional MMCs, in situ MMCs exhibit several possible advantages: the in-situ-formed reinforcements are thermodynamically stable, leading to less degradation at elevated temperature; the reinforcement-to-matrix interfaces are clean, resulting in a strong interfacial bonding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... in the solvent layer. Care must be taken not to apply excess solvent, which may degrade the plastic by crazing or cracking its surface beyond the location where bonding is desired. Three types of solvent materials are commonly used for bonding plastics: Pure solvents provide the simplest, lowest-cost...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110461
EISBN: 978-1-62708-247-1
..., high density materials can scatter strongly and obscure other structural information. In such cases, the optimum sample thickness may have to be smaller than the dimensions of feature of interest. In silicon-based devices, image quality can seriously degrade in extremely thick (>400 nm...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780417
EISBN: 978-1-62708-281-5
... in matrix plasticity, but also an increase in the amount of fiber/matrix interfacial failure in the composite, as shown in Fig. 14 . Although an increase in the amount of fiber/matrix interfacial failure may also be somewhat subjective in nature and difficult to discern, this effect is usually more...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030159
EISBN: 978-1-62708-349-2
... before being put into service, and therefore, premature degradation or failure can result. After the formation of microcracks, the mechanical properties are usually degraded, and will continue to degrade, as the microcracks become larger and increase in number. Often, this degradation is first...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030193
EISBN: 978-1-62708-349-2
... and stitching, matrix properties and toughness, location and size of the toughening materials, interlayer thickness and properties, and the fiber-matrix interfacial properties. The design of the composite part, including the geometry, thickness, number of interfaces, and lay-up, affects the response...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
... attack of alloys simultaneously by two or more reactants is often called mixed gas attack. Gaseous-induced degradation of superalloys is the principal means of elevated-temperature corrosion attack, but deposits which significantly affect the gas-induced corrosion processes can be formed on superalloys...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550511
EISBN: 978-1-62708-307-2
... of both Mg-PSZ and Y-TZP may start to deteriorate at temperatures as low as 500 °C (930 °F). Also, the Y-TZP ceramic is susceptible to severe degradation at temperatures between 200 to 300 °C (400 to 570 °F). 10.5 Design and Selection Considerations The materials selection process for structural...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... is illustrated in Fig. 14.2 . When glass fiber–reinforced composites are exposed to moist or other aggressive environments, they are also prone to degradation caused by weakening of the fiber-to-matrix interfacial bond. This generally occurs by chemical attack at the fiber surface. The degree of weakening...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440001
EISBN: 978-1-62708-352-2
... that have different atomic arrangements from the elements in solid form. By contrast, most brazes form solid solutions, which are mixtures of the constituents on an atomic scale. However, this distinction does not have universal validity. For example, Ag-Cu-P brazes react with steels to form the interfacial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440049
EISBN: 978-1-62708-352-2
... temperature. Capability of producing joints at temperatures at which the properties of the base materials are not degraded. For example, many work-hardened and precipitation-hardened alloys cannot withstand elevated temperatures without loss of their beneficial mechanical properties. Work hardening...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
..., the matrix transmits loads from the matrix to the fibers through shear loading at the interface. In ceramic-matrix composites, the objective is usually to increase the toughness rather than the strength and stiffness, and a low-interfacial-strength bond is therefore desirable. The type and quantity...