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thermal degradation

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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 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110545
EISBN: 978-1-62708-247-1
... module Post-mortem analysis of photovoltaic modules that have degraded performance is essential for improving the long term durability of solar energy. A general procedure for analyzing a failed module might include (a) electrical characterization followed by (b) visual inspection (c) thermal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870401
EISBN: 978-1-62708-314-0
..., lightning strikes, thermal oxidation, and extreme temperatures. It also discusses the factors that influence flammability. environmental degradation flammability heat damage lightning strikes polymeric matrix composites thermo-oxidative stability ultraviolet radiation EXPOSURE OF COMPOSITES...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
..., it covers general characteristics, viscoelastic properties, and static strength. It also discusses fatigue life, impact strength, fracture toughness, and stress-rupture behaviors as well as environmental effects such as plasticization, solvation, swelling, stress cracking, degradation, and surface...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780343
EISBN: 978-1-62708-281-5
... with examples in Table 1 . Clearly, there should be no network structure or cross linking with engineering thermoplastics. However, in practice, small amounts can occur as a result of thermal and oxidative degradation, or, in specific cases, can be introduced by design in the processing operation. Fig. 2...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870063
EISBN: 978-1-62708-314-0
..., and reduce shrinkage. They are normally used in small amounts (three to five percent) because higher concentrations degrade the mechanical and thermal properties of the cured system. Typical diluents include butyl glycidyl ether, cresyl glycidyl ether, phenyl glycidyl ether, and aliphatic alcohol glycidyl...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430149
EISBN: 978-1-62708-253-2
..., which further confirmed thermal degradation of the microstructure. The normal required level of hardness to enable good creep life is between 190 and 210 BHN. Scale formation on both the OD and ID surfaces was indicative of a temperature excursion on the entire tube. Thickness measurements...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030025
EISBN: 978-1-62708-282-2
... species) or does not completely cover the metal surface, a linear rate is usually experienced. Fig. 2 Forms of kinetic curves that represent various thermal degradation processes Fig. 3 Oxidation of carbon steel and high-strength low-alloy (HSLA) steel in air. Source: Ref 2 Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780359
EISBN: 978-1-62708-281-5
...: Degradation Resistance and Failure Analysis , Plastic Design Library , 1998 • Smith B.C. , Fundamentals of Fourier Transform Infrared Spectroscopy , CRC Press , 1996 • Turi E.A. , Ed., Thermal Characterization of Polymeric Materials , Academic Press, Inc. , 1981...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
...-stage blades/buckets, whereas peaking machines are limited by thermal fatigue of components such as first-stage vanes/nozzles, blades/buckets, and combustor components. In addition, in-service microstructural degradation phenomena can render the blade materials increasingly vulnerable to damage by creep...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780329
EISBN: 978-1-62708-281-5
... of engineering plastics. Here, processing usually involves both high mechanochemical and thermal stresses, conditions that are ideal for oxidative degradation. In addition to chromophore concentration, several other polymer variables can affect photoinitiation and photooxidation rates ( Ref 9...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110524
EISBN: 978-1-62708-247-1
.... Wang H. , Hopgood A. A. , and Ng G. I. , “ Analysis of dark-line defect growth suppression in InxGa1-xAs/GaAs strained heterostructures .,” J Appl Phys , vol. 81 , pp. 3117 - 3123 , ( 1997 ). 10.1063/1.364353 3. Herrick Robert W. , “ Degradation in Vertical Cavity Lasers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280323
EISBN: 978-1-62708-267-9
... that has occurred. Fig. 14.9 Engine-operated aircraft gas turbine combustion chamber showing metal loss and degradation, owing to oxidation Fig. 14.10 Enlarged view of area of combustion chamber showing examples of thermal-mechanical fatigue cracking Generally, superalloy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
... protective coatings, including aluminide diffusion, overlay, and thermal barrier types, and how they perform in different environments based on their ability to tolerate strain. coatings corrosion resistance corrosion testing hot corrosion superalloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
... Abstract This article covers the thermal analysis and thermal properties of engineering plastics with respect to chemical composition, chain configuration, and/or conformation of the base polymers. The thermal analysis techniques covered are differential scanning calorimetry, thermogravimetric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870285
EISBN: 978-1-62708-314-0
... will often decrease with increasing regrind content, it is important to test prior to incorporating regrind. The reinforcing effects of glass and carbon fibers decrease with repeated processing because repeated exposure to heat causes breakdown of the fibers and thermal degradation of the resin...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780153
EISBN: 978-1-62708-281-5
... to degradation in plastics include temperature variations, moisture, sunlight, oxidation, microbiologic attack, and other environmental elements. The article also describes the tests used to predict the behavior of a plastic material to outdoor exposure, discussing the use of xenon arc lamp for the weatherometer...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550325
EISBN: 978-1-62708-307-2
... be reprocessed and will thermally degrade and eventually char if heated to high-enough temperatures. Many thermoplastics are polymerized by what is called chain polymerization, as shown in Fig. 7.5 for the simple thermoplastic polyethylene. Chain polymerization consists of three steps: initiation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110603
EISBN: 978-1-62708-247-1
... inspection followed by material evaluation and characterization. These processes are typically followed by evaluation of the packages to identify defects, degradations, and failure mechanisms that are caused by the processes (e.g., cleaning, solder dipping of leads, reballing) used in creating counterfeit...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090191
EISBN: 978-1-62708-266-2
.... , Ford F.P. , Murphy S.M. , and Perks J.M. , State of Knowledge of Radiation Effects on Environmental Cracking in Light Water Reactor Core Materials , Proc. 4th Int. Conf. on Environmental Degradation of Materials in Nuclear Power Systems—Water Reactors , National Association...