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coating lubricity

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0009190
EISBN: 978-1-62708-225-9
... not provided with a coating or plating to ease running-in; and the gears were not run-in properly under reduced loads. The case suggests that such gear failures can be avoided if designers and operators recognize that the lubricant is an important component of a gearbox and appreciate that gear design requires...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001628
EISBN: 978-1-62708-234-1
... operation, the OD of the cylinder was exposed to liquid ammonia refrigerant containing lubricant from the compressor. The lubricant (mineral oil) was intended to separate from the ammonia and be recirculated through the compressor. Nondestructive portable optical microscopy, XRF, EDS, and XPS analyses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... treatment temperatures (consistent with the large grains) and tends to embrittle the alloy. It is possible that this phase may have contributed to the intergranular attack. Recommendations were offered with respect to the use of a dry film lubricant over the cadmium coated region, and the possibility...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001408
EISBN: 978-1-62708-220-4
... in temperature. The material was a steel in the normalized condition with a 0.35% C content. It appears probable that deficient lubrication of the gland resulted in overheating of the rod due to friction. The presence of a sprayed-metal coating was probably an additional factor in promoting failure, as it would...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001127
EISBN: 978-1-62708-214-3
.... The fracture surfaces were coated with zinc oxide. It was concluded that the failure resulted from improper repairs and/or adjustments, including the use of a cosmetic zinc oxide cream as a lubricant. The cream initiated deterioration of the originally ductile plastic, causing it to become brittle and fragile...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001030
EISBN: 978-1-62708-214-3
...Abstract Abstract Cracks were discovered between interference-fit fasteners (MoS2-coated Ti-6Al-4V) that had been incorporated into a fighter aircraft primary structural frame (D6ac steel) to enhance structural fatigue life. Examination of sections cut from the cracked frame established...
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
...-friction layers of solid lubricants for space technology, for example, MoS 2 coatings. The scope of this article is, however, limited to the RCF performance of hard overlay coatings in general, with specific details of underpinning failure mechanisms of TiN and DLC coatings. Physical vapor deposition...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... of SAE 50B38 Steel under Lubricated Conditions , Tribol. Trans. , Vol 45 ( No. 2 ), 2002 , p 246 – 252 10.1080/10402000208982547 127. Snidle R.W. , Dhulipalla A.K. , Evans H.P. , and Cooper C.V. , Scuffing Performance of a Hard Coating under EHL Conditions at Sliding...
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
... mechanics fracture modes fracture surface lubricants macroscopic examination mechanical testing microscopic examination nondestructive inspection sampling simulated-service testing stress analysis wear failure ANALYZING the inevitable failures that occur during testing, manufacturing...
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
... Steel Substrates , Surf. Coat. Technol. , Vol 62 ( No. 1 ), 1993 , p 423 – 427 10.1016/0257-8972(93)90278-V 147. Chang T.-S.P. , Cheng H.S. , and Sproul W.D. , The Influence of Coating Thickness on Lubricated Rolling Contact Fatigue Life , Surf. Coat. Technol. , Vol 43...
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
... Quantification of coating durability under fretting wear (analysis of a MoS 2 solid lubricant). (a) Coating failure ( N c ) when the substrate is reached (friction discontinuity), with evolution as a function of sliding amplitude (δ S ). (b) Quantification of N c as a function of the maximum local Archard...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003565
EISBN: 978-1-62708-180-1
... at low stress levels and can be found in both normal and compound impact contacts. Wear rates are low as the contacting surfaces are separated by oxide films, which tend to have better lubricating properties than bare metal surfaces. Wear debris is generally fine and predominantly made up of metal oxide...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006424
EISBN: 978-1-62708-217-4
... and was heavier than that found on an identical valve assembly also submitted to the laboratory. In addition, the coating of the failed valve was flaking off. Although it did not cause the initial malfunction of the pressure/vent valve assembly, subsequent application of the lubricant without the complete removal...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... Impact Wear of Ceramics Impact Wear of Polymers Impact Wear Testing Impact Wear Modeling Impact Wear Case Studies Acknowledgment References References 1. Engel P.A. , Impact Wear, Friction, Lubrication, and Wear Technology , Vol 18 , ASM Handbook , ASM International...
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
... to as “blood,” “cocoa,” or “red mud.” In components that are lubricated so that ordinary corrosion is not likely to occur, the presence of reddish brown debris is indicative of fretting. If a component is not lubricated, the presence of oxide powder may not necessarily signify fretting but, rather, wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046378
EISBN: 978-1-62708-234-1
...Abstract Abstract River water was pumped into a brine plant by a battery of vertical pumps, each operating at 3600 rpm and at a discharge pressure of 827 kPa (120 psi). The pumps were lubricated by means of controlled leakage. The 3.8 cm (1 in.) OD pump sleeves were made of an austenitic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048607
EISBN: 978-1-62708-225-9
... lubricant in place of the copper-containing compound. As a result of these changes, bolt life was increased to more than three years. Bolts Bolts Lubricants 410 UNS S41000 Stress-corrosion cracking Intergranular corrosion Stainless steel bolts broke after short-term exposure in boiler feed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... irons Thick coatings Thin coatings Metallic plating Diffusion treatments Surface heat treatments Contact fatigue wear (fluid-film lubrication) Bearing steels High-strength martensitic steels Diffusion treatments Surface heat treatments Weld hardfacing Contact fatigue wear (mixed or boundary...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001516
EISBN: 978-1-62708-234-1
... in disk drives consists of a metal, glass, ceramic, or plastic substrate coated with a magnetic material. Data errors are classified as ‘soft’ or ‘hard’ depending on their correctability. Examination has shown that hard errors are the result of an abrasive wear process that begins with contact between...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001533
EISBN: 978-1-62708-225-9
... at dry sliding, mg/mm 3 11.5 × 10 −8 8.6 × 10 −8 9.7 × 10 −8 Wear intensity with lubricant, mg/mm 3 6.1 × 10 −10 6.1 × 10 −10 6.0 × 10 −10 Tribology tests were performed with the help of a friction machine according to a friction pattern disk shoe both at dry friction...