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Electric contacts, corrosion

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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.c9001389
EISBN: 978-1-62708-215-0
..., and calibration areas be isolated from molding areas. Ammonia, environment Atmospheric corrosion Circuit breakers Electric contacts, corrosion Electrical resistance 50Ag-50Mo 73W-27Ag Uniform corrosion Background Visual Examination of General Physical Features Testing Procedure and Results...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0091538
EISBN: 978-1-62708-233-4
...-copper alloy C64700. Marine environments Materials selection Retainers C65500 UNS C65500 Stress-corrosion cracking Electrical contact-finger retainers blanked and formed from annealed copper alloy C65500 (high-silicon bronze A) failed prematurely by cracking while in service in switchgear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0049796
EISBN: 978-1-62708-235-8
... by electrical heating of the bridgewire. Evidence of severe corrosion was revealed on examination of the nickel-chromium-iron alloy bridgewire and the nickel-iron alloy pins. Metallic elements in the pin or bridgewire and substantial amounts of chlorine were detected from the x-ray spectra. Morphological...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... by fretting, failure by corrosion, failure by plastic flow, failure by rolling-contact fatigue, and failure by damage. The article discusses the effects of fabrication practices, heat treatment and hardness of bearing components, and lubrication of rolling-element bearings with a few examples. corrosion...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... – 242 30. Mottine J.J. and Reagor B.T. , Investigation of Fretting Corrosion at Dissimilar Metal Interfaces in Socketed IC Device Applications , Electrical Contacts 1983, Proc. 29th Holm Conference on Electrical Contacts (Chicago) , Illinois Institute of Technology, p 67 – 71...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... on contact surfaces of a type 440C (X90CrMoV18 or WN 1.4112) stainless steel ball bearing. The spots are caused by static electrical discharges resulting from the use of an electrically nonconductive grease. (a, b) Photographs of inner-raceway surface. Original magnification: 10 and 100×, respectively. (c, d...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
... of harmful liquids, and stray electric currents. Most common modes of failure include flaking or pitting (fatigue), cracks or fractures, creep, smearing, wear, softening, indentation, fluting, and corrosion. The modes of failure are illustrated with examples from practice. Roller bearings Rolling...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001385
EISBN: 978-1-62708-215-0
... in electrical applications is the damage to aluminum that can occur when it is in contact with copper or copper alloys, Electrical joint compounds are available to inhibit corrosion in applications involving aluminum wire. Commercially available products consist of a grease-like base in which zinc particles...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
... bearing from a steam turbine. The microscopic pitting is caused by sparking from electric current. Actual size Fig. 6 Fretting on the outside surface of steel backing of a sliding bearing. Fig. 8 Plastic-lined stainless steel spherical bearing for a hydrofoil that failed by corrosion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... smooth surface as a function of the applied measured displacement amplitude between a dry and a grease-lubricated contact. Adapted from Ref 160 Fig. 42 Fretting and fretting corrosion at the contact area between the screw hole of a type 316LR stainless steel bone plate and the corresponding...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... of corrosion. Uniform attack, pitting, and crevice corrosion can all be exacerbated by galvanic conditions. Galvanic corrosion occurs when two dissimilar conducting materials (metallic or nonmetallic) are in electrical contact with an electrolyte or conducting medium. It usually consists of two dissimilar...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001843
EISBN: 978-1-62708-241-9
..., which was confirmed as the failure mechanism in the investigation. electrical connectors tin pest plating defect copper alpha tin x-ray diffraction temperature copper (copper contact alloy, general) tin-bismuth (tin-bismuth plating alloy, general) Introduction Failure Background...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
.... Galvanic corrosion occurs when two dissimilar conducting materials (metallic or nonmetallic) are in electrical contact. It usually consists of two dissimilar conductors in electrical contact with each other and with a common conducting fluid (an electrolyte), or it may occur when two similar conductors...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0091330
EISBN: 978-1-62708-234-1
...Abstract Abstract At a power plant, C-276 nickel alloy welds (N10276) on a C-276 duct floor completely disappeared in less than half a year. A continuous supply of flue gas came in contact with the closed bypass duct. The unscrubbed combustion products condensed on the cold duct...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
... removal of small amounts of material from the bearing body occurs. From the standpoint of bearing design, some or all of the following wear-damage mechanisms must be considered. Surface Fatigue Wear Abrasive Wear Misalignment Cavitation Electrical Erosion Corrosion and Corrosive Wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046535
EISBN: 978-1-62708-234-1
... depression in the backfill revealed the site of failure. Analysis (visual inspection, electrical conductivity, and soil analysis) supported the conclusions that the failure had resulted from galvanic corrosion at a point where the corrosivity of the soil was substantially greater than the average, resulting...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006822
EISBN: 978-1-62708-329-4
... of Underground Pipelines ,” Paper 01592, Corrosion 2001, NACE International , 2001 28. Parkins R.N. , Blanchard W.K. , and Delanty B.S. , Transgranular Stress Corrosion Cracking of High-Pressure Pipelines in Contact with Solutions of Near Neutral pH , Corrosion , May 1994 , p 394...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... it is desirable to examine the nuts and other associated parts that may have contributed to the failures. Also, in failures involving corrosion, stress-corrosion, or corrosion fatigue, a sample of the fluid that has been in contact with the metal, or of any deposits that have formed, will often be required...
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
... corrosion), which is typically apparent from overall thinning and loss of metal Galvanic corrosion, which occurs when dissimilar metals are in electrical contact via an electrolyte (or less commonly, when similar metals are in electrical contact via either dissimilar electrolytes or even a similar...
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
... in such circumstances. A special case of wear is fretting, in which contacting surfaces are involved in vibration or very small relative motion at high frequency. Generally, corrosion is also involved, because the small particles of material that are removed expose fresh material during the small-amplitude-motion...