1-20 of 81 Search Results for

chemical vapor deposition

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
... Abstract A major cause of failure in components subjected to rolling or rolling/sliding contacts is contact fatigue. This article focuses on the rolling contact fatigue (RCF) performance and failure modes of overlay coatings such as those deposited by physical vapor deposition, chemical vapor...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001773
EISBN: 978-1-62708-241-9
... processing or is sold as a final product. In general, water is used to cool and condense the vapors inside the condenser. Redesign the V-shape junction so as to eliminate the stagnation locations. Conduct periodic chemical cleaning of the cooling water side of the condenser to remove the deposits...
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
... of a deposit removed from a fracture surface that experienced stress corrosion may not reveal the corrodent that caused the SCC. Often the fracture surface is flushed with water or cleaned prior to testing. Liquid penetrants, cleaning fluids, cutting fluids, and solvents may alter the chemical composition...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... are presented in this report. The analyses used to determine the cause of failure include metallographic examination of the fractures and chemical analysis of the deposits found within the pipe. The failures of the purge ventilation components impacted the escape of the corrosive salts. The efficacy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001718
EISBN: 978-1-62708-220-4
... spectroscopy (EDS) was employed for chemical analysis of the fracture surface of one of the linear defects on the damaged impeller blades. Figure 11 presents the EDS spectrum for the black deposit on the tight crack-like portion of the defect. This region is rich in carbon, attributed to graphite mold...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001364
EISBN: 978-1-62708-215-0
... of solidification porosity. Unetched. (a) 31.5×. (b) 252× Fig. 5 EDS elemental analysis results for the compressor outlet deposit Fig. 6 EDS elemental analysis results for the condenser inlet deposit Fig. 7 Wavelength dispersive spectrographic analysis (WDS) over the l.820 to l.850 nm...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001281
EISBN: 978-1-62708-215-0
... and Results Surface Examination Scanning Electron Microscopy/Fractography Specimen Selection Visual Examination of General Physical Features Chemical Analysis/Identification Material Metallography Microstructural Analysis Corrosion or Wear Deposits Coatings or Surface Layers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0006548
EISBN: 978-1-62708-180-1
... opening displacements COV coefficient of variation CPSC Consumer Product Safety Commission CTE coefficient of thermal expansion CTOD crack-tip opening displacement CVD chemical vapor deposition CVN Charpy V-notch (impact test or speci- men) d depth; diameter da/dN fatigue crack growth rate da/dt crack...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... graphite under transfer of metal particles into the “coke” layer Further graphite deposition from the gas phase on these catalytically active metal particles (iron, nickel). Chemical reactions producing such high carbon activities, for example, in reformer applications, are: (Eq 1) Hydrogen...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001314
EISBN: 978-1-62708-215-0
..., leaving a carbon rich sooty deposit on the tube wall. The design operating temperatures were 650 ° ± 10 °F for the fluid and 720 °F for the steel tubing. A vaporizer installed in a foodstuffs industry processing plant failed three times in attempts to bring the system on line. A schematic flow...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... or a combination of ceramic and metal (cermet) materials, which are much harder than the underlying steel substrate ( Ref 136 ). Three major techniques are used for these coatings: physical vapor deposition, chemical vapor deposition, and thermal spray. Physical Vapor Deposition Coatings Overlay coatings...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
... beneath the oxide scale seem to be a characteristic of hot corrosion in the presence of chlorides ( Fig. 6 ), and similar voids were observed on grate bars with relatively high chloride salt deposits ( Fig. 7 ). Two general trends were evident from chemical analysis. First, the outer scale, which...
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
... diffraction (XRD) provides chemical composition information for crystalline phases in the corrosion deposit. Energy-dispersive x-ray spectroscopy is elemental analysis, as opposed to the quantitative composition analysis provided by XRD. The technique is used to analyze a well-mixed scale/deposit or different...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046252
EISBN: 978-1-62708-229-7
... occurred in welded joints and in unwelded portions of the bellows. The bellows were made by forming the convolution halves from stainless steel sheet, then welding the convolutions together. Evidence from visual examination, liquid penetrant inspection chemical analysis, hardness tests, and metallographic...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001834
EISBN: 978-1-62708-241-9
... external corrosion results from tube metal temperature, corrosive flue gas, and surface deposits [ 10 ]. The oxygen content of the steam vapor in the tube was low (0.007–0.030 mg/L). Thus, the corrosion of the pipe, particularly through water steam oxidation, can be considered a hypoxic process...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... Abstract This article provides a discussion on the structural ceramics used in gas turbine components, the automotive and aerospace industries, or as heat exchangers in various segments of the chemical and power generation industries. It covers the fundamental aspects of chemical corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001791
EISBN: 978-1-62708-241-9
...Comparison between the chemical composition of the boiler tube steel and the one specified by ASTM A 192-02 standard Table 1 Comparison between the chemical composition of the boiler tube steel and the one specified by ASTM A 192-02 standard Elements Chemical composition boiler tube...
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
... is frequently associated with failure in steam power plant equipment, but the active corrosive agent is not always obvious. Consequently, collection and preservation of corrosion products (particularly loose, flaky, or powdery deposits) may be of vital importance, because chemical analysis of corrosion products...
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
..., hydrogen sulfide, carbon dioxide, and ammonia can be very corrosive environments. Another cause of inadvertent general corrosion is improper chemical cleaning using uninhibited acids, excessive temperatures, or prolonged contact time. Water used to wash fire-side deposits where high-sulfur fuel oil...