Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 1460-1466 |
| Number of pages | 7 |
| Journal | Tribology International |
| Volume | 42 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2009 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- gears
- micropitting
- lubrication
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Twin disc micropitting tests. / Ahlroos, Tiina (Corresponding Author); Ronkainen, Helena; Helle, Aino; Parikka, Risto; Virta, Jouko; Varjus, Simo.
In: Tribology International, Vol. 42, No. 10, 2009, p. 1460-1466.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Twin disc micropitting tests
AU - Ahlroos, Tiina
AU - Ronkainen, Helena
AU - Helle, Aino
AU - Parikka, Risto
AU - Virta, Jouko
AU - Varjus, Simo
N1 - Project code: G4SU01153
PY - 2009
Y1 - 2009
N2 - Gears are important power transmission components and their efficiency and durability strongly depend on their tribological performance. The demand for higher efficiency has further increased the requirements for controlled tribological performance of gear contacts. One of the typical tribological failures that gears experience is micropitting, which is a fatigue failure of the surface strongly associated with low lubricant film thickness. Micropitting is claimed to be the dominant life limitation for ground hardened gears operating under modest conditions. In this work the factors affecting micropitting performance of gears were studied. Twin disc experiments were carried out to investigate the effect of surface roughness, lubricant type and surface treatment on micropitting performance of two case hardening steels. The test results showed that the roughness of the gear has a major impact on the micropitting performance. Also the use of DLC coating or carbonitriding surface treatment and the use of ester type lubricant had a beneficial effect compared to untreated or mineral oil lubricated surfaces.
AB - Gears are important power transmission components and their efficiency and durability strongly depend on their tribological performance. The demand for higher efficiency has further increased the requirements for controlled tribological performance of gear contacts. One of the typical tribological failures that gears experience is micropitting, which is a fatigue failure of the surface strongly associated with low lubricant film thickness. Micropitting is claimed to be the dominant life limitation for ground hardened gears operating under modest conditions. In this work the factors affecting micropitting performance of gears were studied. Twin disc experiments were carried out to investigate the effect of surface roughness, lubricant type and surface treatment on micropitting performance of two case hardening steels. The test results showed that the roughness of the gear has a major impact on the micropitting performance. Also the use of DLC coating or carbonitriding surface treatment and the use of ester type lubricant had a beneficial effect compared to untreated or mineral oil lubricated surfaces.
KW - gears
KW - micropitting
KW - lubrication
U2 - 10.1016/j.triboint.2009.05.023
DO - 10.1016/j.triboint.2009.05.023
M3 - Article
VL - 42
SP - 1460
EP - 1466
JO - Tribology International
JF - Tribology International
SN - 0301-679X
IS - 10
ER -