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thermal decomposition

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006087
EISBN: 978-1-62708-175-7
... Abstract This article provides a discussion on the process descriptions, processing conditions, and processing variables of the most common chemical methods for metal powder production. These methods include oxide reduction, precipitation from solution, and thermal decomposition. Methods...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003112
EISBN: 978-1-62708-199-3
... process, Pyron process, atomization of liquid metal, thermal decomposition and the electrodeposition process for carbonyl and electrolytic iron powders. It describes the types of compaction and sintering, explaining their effects of processing with designations. Further, the article deals...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
..., electrochemical, atomizing, oxide reduction, and thermal decomposition processes. It also covers the consolidation of powders by pressing and sintering, as well as by high density methods. Further emphasis is provided on the distinguishing features of powders, their manufacturing processes, compacting processes...
Image
Published: 01 January 2006
Fig. 8 Two solder connections that were made without a heat sink. The solder area was hot enough to initiate the thermal decomposition of the polyvinyl chloride insulation. The continuing decomposition of the insulating material resulted in the release of hydrogen chloride gas to the inside More
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006673
EISBN: 978-1-62708-213-6
... of temperature or time in a controlled atmosphere. The weight of the evaluated material can decrease due to volatilization or decomposition or increase because of gas absorption or chemical reaction. Thermogravimetric analysis can provide valuable information regarding the composition and thermal stability...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003006
EISBN: 978-1-62708-200-6
... in polymers. Bond strength has a dramatic influence upon important properties, such as thermal decomposition. As can be seen from Table 6 , it is dependent on both the elements and type of bonds involved. Bond energies for common bonds in polymers Table 6 Bond energies for common bonds in polymers...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005959
EISBN: 978-1-62708-168-9
... by a discussion on physical metallurgy, including crystallographic identity, thermal stability and decomposition, nitrogen and carbon solubility in expanded austenite, and diffusion kinetics of interstitials. It provides a description of low-temperature nitriding and nitrocarburizing processes for primarily...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003218
EISBN: 978-1-62708-199-3
... the coating on the substrate. The numerous chemical reactions used in CVD include thermal decomposition (pyrolysis), reduction, hydrolysis, disproportionation, oxidation, carburization, and nitridation. These reactions take place singly or in combination and are controlled by thermodynamics; kinetics; mass...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003013
EISBN: 978-1-62708-200-6
... (TPA). Thermal decomposition (also known as thermolysis or pyrolysis): The scrap or waste plastic is heated to high temperature in the absence of oxygen or in an oxygen-deficient atmosphere. No burning takes place. An example is the complete decomposition of mixed-plastic packaging waste to syngas...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005983
EISBN: 978-1-62708-166-5
... 2 H 6 ), propane (C 3 H 8 ), and butane (C 4 H 10 ). These gases impart a carburizing tendency to a furnace atmosphere. The chemical activity in reacting with the surface of hot steel depends on their thermal decomposition and their tendency to form nascent carbon at the steel surface...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006331
EISBN: 978-1-62708-179-5
... of formation by introducing the scalar relation, known as the additive strain decomposition. The main factors influencing casting deformation are volume changes during solidification and cooling, phase transformations, alloy composition, thermal gradients, casting geometry, and mold stability. The article...
Image
Published: 01 October 2014
Fig. 9 (a) Continuous cooling transformation diagrams of DIN 22CrMo44 steel showing austenitic decomposition with the superimposed cooling curves of the surface and center during water quenching of round bars of varying dimensions. (b) The corresponding residual-stress pattern developed More
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001283
EISBN: 978-1-62708-170-2
... in a sequential fashion without breaking the vacuum (thus minimizing contamination), and the distinction between the two basic processes becomes blurred ( Ref 3 ). CVD Reactions The numerous chemical reactions used in CVD include thermal decomposition (pyrolysis), reduction, hydrolysis, disproportionation...
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
... or decomposition or increase because of gas absorption or chemical reaction. Thermogravimetric analysis can provide valuable information regarding the composition and thermal stability of polymeric materials. The obtained data can include the volatile content, inorganic filler content, glass-fiber level, carbon...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006661
EISBN: 978-1-62708-213-6
..., and tribology ( Ref 33 ). A few studies where TPD was used to elucidate surface reactions that impact the tribological performances of materials are discussed here. MoS<sub>2</sub> on Molybdenum Pierce et al. ( Ref 34 ) used TPD to investigate the thermal decomposition of a molybdenum disulfide (MoS 2...
Book Chapter

By Bo Hu
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006102
EISBN: 978-1-62708-175-7
.... 4 Particle images of commercial electrolytic iron powders (a) A and (b) B. Top row: SEM images; bottom row: cross section optical microscope images Carbonyl iron powder is produced by thermal decomposition of iron pentacarbonyl [Fe(CO) 5 ] which is formed at &gt;130 atm from a reaction...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005574
EISBN: 978-1-62708-174-0
... the diffusion bonding literature. Resulting models show the importance of the size and distribution of the residual oxide particles, as well as the role of the thermal cycle. Finally, the third underlying mechanism of forge welding processes is the decomposition of the interfacial structure. Following...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003367
EISBN: 978-1-62708-195-5
... and Ising ( Ref 7 ) in early postcured Kevlar (DuPont) laminates. The amount of carbamate formed is also dependent on the catalyst used in the formulation; zinc catalysts promoted the carbamate formation more than copper or cobalt. During thermal decomposition of the carbamate into carbon dioxide and amine...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... of the bonds within a mer unit. Table 3 ( Ref 6 ) gives a list of bond energies for bonds that occur commonly in polymers. Bond strength has a dramatic influence on important properties, such as thermal decomposition. As can be seen from Table 3 , it is dependent on both the elements and type of bonds...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006031
EISBN: 978-1-62708-172-6
..., mechanical malfunction or human error may lead to thermal decomposition at elevated temperatures, with evolution of toxic hydrogen fluoride. The thermal decomposition temperature of PVDF is over 375 °C (705 °F) ( Ref 20 ), well above its normal bake temperature of ∼200 to 250 °C (390 to 480 °F...