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hydrogen permeation

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Published: 01 January 2006
Fig. 6 A modified Novaprobe showing the soil hydrogen permeation electrode (SHPE), four stainless steel (SMO) rings for measuring soil resistivity and redox potential, and two sets of three electrodes for conventional electrochemical measurements. Source: Ref 9 More
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Published: 01 January 2003
Fig. 31 Electrochemical hydrogen permeation cell assembly and measuring apparatus. (a) Schematic. (b) Polytetrafluoroethylene (PTFE) hydrogen permeation cell. Source: ASTM G 148 More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004117
EISBN: 978-1-62708-184-9
.... Electrochemical techniques discussed include linear polarization resistance, electrochemical noise, harmonic distortion analysis, electrochemical impedance spectroscopy, and hydrogen permeation. The principles of operation for the corrosion measuring techniques are described along with examples of their use...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006073
EISBN: 978-1-62708-172-6
... Abstract This article discusses the environmental influences on protective coating films that can result in deterioration. These environmental factors can be classified into four groups: (1) energy: solar, heat; (2) permeation: moisture, solvent, chemical, and gas; (3) stress: drying and curing...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003644
EISBN: 978-1-62708-182-5
... Electrochemical impedance spectroscopy scans Miscellaneous tests Hydrogen permeation Anodized aluminum corrosion test Electrolytic corrosion test Paint adhesion on a scribed surface Impedance test for anodized aluminumodized Critical pitting temperature The galvanic current flowing...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003844
EISBN: 978-1-62708-183-2
... charge and can attract hydrogen atoms with a slight positive charge (or any other atoms or groups of atoms with positive charges). Because of this polarity, water has an affinity for other polar groups within a resin molecule. Moreover, its small size enables it to readily permeate molecular interstices...
Book Chapter

By Bruce Craig
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003634
EISBN: 978-1-62708-182-5
... of that class. Microperforation Microperforation by high-pressure hydrogen occurs at extremely high pressures of hydrogen near room temperature. Microperforation occurs predominately in steels. This form of hydrogen damage manifests itself as a network of small fissures that allows permeation...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003432
EISBN: 978-1-62708-195-5
... to control the rate of reaction. The article describes the component material tests, mixed resin system tests, and prepreg tests for the resin system. These tests include high-performance liquid chromatography, infrared spectroscopy, and gel permeation chromatography. The article contains a table that lists...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004182
EISBN: 978-1-62708-184-9
... Abstract This article provides the corrosion data for materials in hydrofluoric acid (HF) and anhydrous hydrogen fluoride (AHF). These materials include carbon and low-alloy steels, austenitic stainless steels, nickel-rich austenitic stainless steels, nickel and nickel-base alloys, copper...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003702
EISBN: 978-1-62708-182-5
... probes measure hydrogen permeation and provide information on the rate of corrosion. Other on-stream corrosion monitoring techniques that are used in the petroleum and chemical-process industries are: Electrochemical techniques: includes monitors that use electrical resistance and linear...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003848
EISBN: 978-1-62708-183-2
... resistance. Fluoroelastomers (FKM, FFKM) Fluoroelastomers (FKM, FFKM) owe their excellent resistance to heat and oil to the high ratio of fluorine to hydrogen, the strength of the carbon-fluorine bond and the absence of unsaturation. The basic building blocks, in the case of FKM dipolymers...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002387
EISBN: 978-1-62708-193-1
..., some conditions can be difficult to assess by nondestructive inspection. For example, embrittlement from hydrogen, carburization, and strain aging can be difficult to determine. Nonetheless, useful nondestructive methods ( Table 2 ) include not only conventional methods such as ultrasound, radiography...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004183
EISBN: 978-1-62708-184-9
... ( Ref 12 ). Because iron is attacked less rapidly by hydrogen chloride than chlorine, the presence of hydrogen chloride in dry chlorine should have little effect on iron chlorination rates. In practice, however, the use of steel is avoided where moisture may be present. Table 1 indicates corrosion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003556
EISBN: 978-1-62708-180-1
... noted that hydrogen permeation through steel under CP in artificial seawater was greater for a mixed culture of bacteria producing 160 ppm of sulfide than it was for the same concentration of sulfide without bacteria. Attempts to demonstrate these effects more generally led to the conclusion...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005711
EISBN: 978-1-62708-171-9
... fields to confine the hydrogen isotope fuel in the state of a hot plasma consisting of electrons and ions. Inertial confinement fusion (ICF) uses a small pellet of hydrogen fuel that is compressed and heated evenly on all sides by high-energy beams of laser light, electrons, or ions. An excellent review...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001268
EISBN: 978-1-62708-170-2
... alternative method for achieving desired mechanical and galvanic properties with an extremely low risk of hydrogen embrittlement. This article provides a detailed description of the equipment, process steps, process capabilities, applicable parts, specific characteristics, advantages, limitations, post...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... of cathodic hydrogen into the metal matrix through production of recombination poisons such as hydrogen sulfide and thiosulfate, which prevent the formation and escape of molecular hydrogen from cathodic surfaces ( Fig. 1 ). Lab results indicate enhanced permeation of hydrogen through carbon steel exposed...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004211
EISBN: 978-1-62708-184-9
... resistance corrosion measurements, hydrogen permeation monitoring, and online inspection) along with improvements in handling and integration methods of electronic data that are now being introduced. Simultaneously, engineers are getting access to predictive software that rapidly queries complex engineer...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005944
EISBN: 978-1-62708-166-5
... soluble in lead so that it does not permeate the entire mass of the molten bath but remains mainly on the surface. Finally, lead is an extremely toxic metal and inhaling or ingesting even minute traces creates a serious health hazard. Quenching of Steel Strips An example of lead bath quenching...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001319
EISBN: 978-1-62708-170-2
... blue glow and much UV radiation. The photons in the UV region have enough energy to break the carbon-carbon and carbon-hydrogen bonds in the materials on the surface that are exposed to the plasma. In the case of contaminants, the net effect appears to be degradative, such that lower-molecular-weight...