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coating failures

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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
... Representative leading (a) and trailing (b) edges of the nozzles. Abstract The first-stage nozzles of a high-pressure turbine section of an industrial gas turbine exhibited leading and trailing-edge deterioration. The nozzles were made of X-40, a cobalt-base alloy, and were aluminide coated. Failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045926
EISBN: 978-1-62708-235-8
... that the sodium was present before the chromate conversion treatment was performed. A review of the manufacturing procedures showed that sodium hydroxide was used as a cleaning agent before the chromate conversion coating. Failure cause was that apparently the sodium hydroxide had not been properly removed during...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
... in the failure analysis. The corrosion products were analyzed using energy-dispersive X-ray analysis (EDAX). The failure is attributed to the ingress of water and its impoundment under the tank bottom along the periphery inside the ring wall and failure of water side epoxy coating. Various measures to prevent...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001572
EISBN: 978-1-62708-236-5
... Abstract Extensive slipper/wobbler failures occurred in the integrated drive generators that incorporated TiN coated wobblers, during the production acceptance test. Similar coated wobblers had passed the application tests. The nature of the failure was extensive gouging of the wobbler surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001574
EISBN: 978-1-62708-223-5
... was a clear indication of high temperature exposure (due to insufficient cooling) during application. The most probable cause of failure was thermal fatigue. Grain boundaries Precipitation Punches WR-95 Chromium nitride coating Thermal fatigue fracture Background The CrN coated restrike...
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.c9001829
EISBN: 978-1-62708-241-9
... controlling factor in the coating life [ 8 ]. The cause of coating failure appeared to be a combination of internal oxidation and mechanical thinning of the coating. Rumpling of the coating resulted in a significant reduction in time to penetration and was in some systems the lifecontrolling factor [ 8...
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
.... Preventive techniques include painting (coatings), inhibition, and cathodic or anodic protection. The service life of the affected component can typically be estimated with a reasonable degree of accuracy, and catastrophic failures can be avoided. Localized corrosion, such as crevice and pitting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... evaluations, the creep cavitation damage assessment, the oxide-scale-based life prediction, and high-temperature crack growth methods. coating evaluation creep cavitation damage assessment elevated-temperature failure gas turbine blade hardness testing high-temperature crack growth methods life...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001269
EISBN: 978-1-62708-215-0
... on the surface. Sample after gold sputter coating. 500×. Fig. 1 Overall view of titanium nitride-coated hob. Approximately.1× Fig. 2 Closer view of fractured cutting edges. Approximately 5×. Abstract Recurring, premature failures occurred in TiN-coated M2 gear hobs used to produce...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c9001573
EISBN: 978-1-62708-226-6
... Abstract TiN coated back surgery wires were made of Ti-6Al-4V. The reported failure was the presence of pits located in the uncoated area of the wires. The uncoated area of the wire is where the wire is fixtured in the coating chamber during coating. Examination and analysis of the pits using...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006436
EISBN: 978-1-62708-217-4
... that the failure of the pylon attachment stud was caused by general corrosion followed by SCC. The stud was not adequately protected against corrosion by the coating. It was recommended that the coating be applied to a thickness of 38 to 75 micron (1.5 to 3 mil) to provide long-time corrosion resistance...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001133
EISBN: 978-1-62708-214-3
... reactions Powder coating Surgical implants ASTM F75 UNS R30075 Surface treatment related failures (Other, miscellaneous, or unspecified) failure Handbook of Case Histories in Failure Analysis, Volume 1 Copyright © 1992 ASM International® K.A. Esaklul, editor All rights reserved DOI: 10.31399...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046972
EISBN: 978-1-62708-217-4
... with the surface. However, this improvement would be more costly than applying a protective coating. Selected References Selected References • Benac D.J. and Swaminathan V.P. , Elevated-Temperature Life Assessment for Turbine Components, Piping, and Tubing , Failure Analysis and Prevention...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0046969
EISBN: 978-1-62708-227-3
... Abstract Aluminide-coated and uncoated IN-713 turbine blades were returned for evaluation after service in a marine environment because of severe corrosion. Based on service time, failure of these blades by corrosive deterioration was considered to be premature. Analysis (visual inspection...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001094
EISBN: 978-1-62708-214-3
... Scanning electron micrograph showing shear dimples, characterizing ductile overload failure in the cross section. Fig. 4 Scanning electron micrograph of the screw surface, showing the morphology of the mechanically applied cadmium coating. Fig. 5 Cross section of a fractured screw...
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
... maintenance. corrosion corrosion failure analysis corrosion monitoring electrochemical corrosion galvanic protection inhibitors metallic coatings nonmetallic coatings preventive maintenance surface treatments thermal spray CORROSION is the deterioration of a material by a reaction...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
.... , and Heughebaert M. : “ Structural Analysis of Hydroxyapatite Coatings on Titanium ,” Biomaterials , 1986 , 7 , pp. 97 – 103 10.1016/0142-9612(86)90063-3 . 14. Gilbert J.L. , Buckley C.A. , et al. : “ Intergranular Corrosion-Fatigue Failure of Cobalt-Alloy Femoral Stems ,” J. Bone...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001696
EISBN: 978-1-62708-234-1
... coatings added after the investigation have proven effective in preventing subsequent such failures. Hydrochloric acid Launch pad tubing Marine environments 304 UNS S30400 Stress-corrosion cracking Background Information A section of 0.75 in (diameter) × 0.065 in (wall-thickness) 304...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001504
EISBN: 978-1-62708-217-4
... pitting (3) at the origin of longitudinal/radial stress corrosion crack (dotted line). d: The 75mm (2.95 in) long stress corrosion crack in the lever initiated at a corrosion pit (arrow) in an area where the IVD aluminium coating had disappeared. During the investigation, the failure sequence...