1-20 of 24 Search Results for

micropitting

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
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006354
EISBN: 978-1-62708-192-4
... discharge), scuffing, and Hertzian fatigue (including macropitting and micropitting). Details for obtaining high lubricant specific film thickness are presented. The article describes the selection criteria for lubricants, such as oil, grease, adhesive open gear lubricant, and solid lubricants. It discusses...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... propagation in different environments. The article concludes with a discussion on rolling-contact fatigue, macropitting, micropitting, and subcase fatigue. corrosion fatigue crack growth crack initiation damage tolerance criterion fatigue fracture fatigue strength fatigue-crack propagation finite...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002401
EISBN: 978-1-62708-193-1
... Micropitting Microspalling Frosting Glazing Gray staining Surface distress Peeling Table 1 List of inclusion type and occurence associated with butterfly formation Type of nonmetallic inclusion Appearance of nonmetallic inclusion Frequency of butterflies MnS...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002373
EISBN: 978-1-62708-193-1
...-bearing performance map. Source: Ref 2 Fig. 4 Contact fatigue spalling of cam lifter surface. Source: Ref 3 Fig. 5 Pitch line spalling of medium-hardened gears. Source: Ref 4 Fig. 6 Micropitting of roller bearing outer race. Scanning electron micrograph, (a) 57× and (b...
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
... is, however, inevitable in both pure rolling and rolling/sliding conditions. The term “RCF” in this article, however, refers to pure rolling configurations, except where specific references to rolling/sliding conditions are made. The material removal in a RCF failure varies from micropitting, macropitting...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003327
EISBN: 978-1-62708-176-4
... of the lubricant. As cracks progress further into the surface, larger chunks of material can break away, leaving larger cavities. When cavities have grown from the size of exfoliation up to about 100 μm (0.004 in.) deep, the condition is termed micropitting. The term frosting sometimes is applied...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006393
EISBN: 978-1-62708-192-4
... G.E. and Brizmer V. , Micropitting Modelling in Rolling-Sliding Contacts: Application to Rolling Bearings , Tribol. Trans ., Vol 54 ( No. 4 ), 2011 , p 625 – 643 10.1080/10402004.2011.587633 34. Morales-Espenjel G.E. , Surface Roughness Effects in Elastohydrodynamic...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004103
EISBN: 978-1-62708-184-9
.... The corrosion mechanism was described earlier. Figure 17 illustrates acicular crystals growing from the surface, possibly from chloride micropits. Rhombohedral crystals can then grow from these seeds, using the iron from the metal or from that in the water. Figure 18 illustrates the fibrous structure...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002375
EISBN: 978-1-62708-193-1
... derating factor. Table 4 Situations and concepts of pitting failures in gears Description Recommended action Situation 1 Some micropitting and a few macropits on the pinion. No gear pitting. Scrap the pinion, even though it is still quite runnable. It may not last until the next...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002376
EISBN: 978-1-62708-193-1
... Important PSO, point surface origin, fan-shaped spall propagation starting on the surface. GSC, geometric stress concentration starting at end of line contact. (a) Fatigue originates at nonmetallic inclusion in the maximum shear zone below the surface. (b) Called peeling or micropitting...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003827
EISBN: 978-1-62708-183-2
.... A black matte appearance can be achieved by increasing etch time prior to anodization. The matte finish is probably the result of micropitting created by the nitric-hydrofluoric etching. Removal of only 2.5 μm (0.1 mil) with the acid etch is needed to produce the matte finish. A more distinct matte finish...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006426
EISBN: 978-1-62708-192-4
Book Chapter

Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006358
EISBN: 978-1-62708-192-4
...-in) to carry the load adequately Destructive pitting: Usually starts below the pitch line and spreads in number and size of pits until the gear shape is rendered unusable Other terminology has been used for describing surface damage in gears. Terms include micropitting, surface origin pitting...
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
... fatigue (rolling-contact fatigue, or RCF), but eventually RCF begins, and lines of travel caused by micropitting may appear on bearing surfaces. Rolling lines of travel can progress to visible pitting and even spalling. When the mechanical action of a fluid is involved in a tribological process...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003586
EISBN: 978-1-62708-182-5
... of micrometer-scale defects such as sulfide inclusions in stainless steel ( Ref 114 ) and constituent particles in aluminum alloys ( Ref 112 ) that control pit nucleation intensity and produce micropit-to-micropit variations in growth rates and transport characteristics (e.g., D eff , pit shape) for a large...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006371
EISBN: 978-1-62708-192-4
...-oscillations. Fretting is a type of abrasion and micropitting in the presence of wear particles detached from a fretted surface but contained in the fretting contact. If surface layers are removed in the process, for example, a coating of a seal mating surface, fretting may involve corrosion and oxidation...
Book Chapter

By Koji Kato
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006394
EISBN: 978-1-62708-192-4
... between μ and ηV/ P m in Fig. 23 can not be explained by the hydrodynamically formed water film. In the sliding contact between SiC flat surfaces textured with artificial micropits, μ = 10 –3 to 10 –4 is observed in water after careful running-in process governed by polishing wear ( Ref 60 , 61...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
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
... V. , Gabelli A. , Vieillard C. , and Morales-Espejel G.E. , An Experimental and Theoretical Study of Hybrid Bearing Micropitting Performance under Reduced Lubrication , Tribol. Trans. , Vol 58 ( No. 5 ), 2015 , p 829 – 835 10.1080/10402004.2015.1021944 129. Harris...