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moisture absorption

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001517
EISBN: 978-1-62708-217-4
... fiber/matrix disbonding in the top two or three plys of the laminate. Although the exact nature of the resin anomaly was not directly determined, indirect evidence indicated that the resin anomaly was the result of moisture absorption by the resin. Selected Reference Selected Reference...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001390
EISBN: 978-1-62708-215-0
... during the underdeposit attack. Conclusion and Recommendations Most Probable Cause The primary cause of the fracture was SCC originating at rusted regions on the surface of the heaters. The presence of ferric ions in the rust and absorption of chloride ions and moisture from a coastal...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001343
EISBN: 978-1-62708-215-0
... steel pipe occurred during installation or storage. The pipe was exposed to a coastal atmosphere, and the rust had been present for a long period. The rust contained enough ferric ions to raise the electrochemical potential of the steel locally. Absorption of chloride ions and moisture from the coastal...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
... on the molding resin. Both spectra exhibited absorption bands characteristic of a polysulfone resin. This is illustrated in the spectral comparison presented in Fig. 3 . These results demonstrated that the failed part was fabricated from a typical polysulfone resin and showed no evidence of contamination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001570
EISBN: 978-1-62708-220-4
... on the surface. Titanium retains the corrosion resistance as long as there is moisture or a trace of oxygen to keep the oxide film intact 6 . The oxide film on titanium reduces the penetration of hydrogen and thus the absorption of hydrogen by titanium at room temperature. Nevertheless, the protection...
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
... limited ( Ref 9 ). Adsorption of solvents into the amorphous regions of a crystalline polymer will create the discussed effects within those regions of the polymer morphology; this can result in changes in polymer mechanical properties. For example, nylon plastics will absorb moisture from the air...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... in weldments can be explained by the pressure theory. Hydrogen charged into steel during aqueous corrosion or cathodic charging can also produce a very high pressure at the surfaces of closed voids or pores. The reduced surface energy theory states that the absorption of hydrogen decreases the surface free...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... in terms of low moisture absorption when compared to other nylons, are also used extensively; however, they are expensive. Historically, nylons have been very popular materials for many tribological applications such as sliding fittings, bearings, and gears. Possibly the greatest advantage of using...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... at the surfaces of closed voids or pores. The reduced surface energy theory states that the absorption of hydrogen decreases the surface free energy of the metal and enhances crack propagation. This theory may explain the crack propagation of high-strength steels in low-pressure gaseous hydrogen...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... in one of the tank floor plates. While it was expected that the ground under the tank was near operational temperatures, it was determined that the temperatures were below 104 °C (220 °F) at most areas evaluated in the ground. Thus, it was possible for moisture to accumulate at the tank floor, producing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... spectrum obtained from a polymer material has unique characteristics, which are a fingerprint of an individual material. The spectrum shows absorption peaks that correspond to the frequencies of vibrations between the bonds of the atoms that make up the material. Fourier transform infrared (FTIR...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
... spectrometer Positive metal identification based on the x-ray fluorescence principle Scanning electron microscope coupled with energy-dispersive spectrometer Atomic absorption spectrometer Ion chromatography Flame photometer Microstructural Examination Microstructural examination...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
... for diffusion-related alterations. Grain boundaries are thus the preferential region for congregation and segregation of impurities. Weakening or embrittlement can also occur by preferential phase precipitation or absorption of environmental species in the grain boundaries. In addition, the grain-boundary...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... Ceramics/Intermetallics Bulk chemical analysis of ceramic and intermetallic components that have failed may be made in several ways, including wet analytical chemistry, ultraviolet/visible absorption spectroscopy, and molecular fluorescence spectroscopy. Additionally, x-ray diffraction analysis...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
.../Intermetallics Bulk chemical analysis of ceramic and intermetallic components that have failed may be made in several ways, including wet analytical chemistry, ultraviolet/visible absorption spectroscopy, and molecular fluorescence spectroscopy. Additionally, x-ray diffraction analysis is particularly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
...). Weakening or embrittlement can occur by preferential phase precipitation or absorption of environmental species in the grain boundaries. In addition, the grain-boundary regions may also be weakened by high temperature, whereby the predominant fracture path becomes intergranular (although transgranular...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
.... At pressures of 2070 kPa (300 psi) or more, the presence of small amounts of oxygen promotes hydrogen sulfide corrosion of carbon steel, even at room temperature. Thus, oxygen combined with moisture produces conditions for attack of hydrogen sulfide on carbon steel at temperatures below 260 °C (500 °F...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001272
EISBN: 978-1-62708-215-0
... of the first course. The first bolt hole in the stiffener was located 125 mm (5 in.) above the bottom of the first course. The grain bin was first filled in the spring after erection the previous fall. Within the next month, the bin was emptied and refilled with wheat of 12.5% moisture. Approximately five...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1