Abstract
Frictional behavior of extremely smooth (average roughness ~1 nm) and hard (approximately 800-2200 kg mm-2) solids in air has been investigated. The present study was conducted to obtain the minimum friction under dry sliding conditions by eliminating the friction components due to mechanical interactions such as plowing and asperity deformation. By using extremely smooth and hard materials (silicon, sapphire, SiC, quartz and glass), static friction coefficients as low as 0.06 and steady state friction coefficients between 0.09 and 0.17 could be obtained with an undetectable amount of wear. The low friction and wear behavior of smooth and hard solids in air is attributed to the low probability of asperity interaction and wear particle generation as well as to surface films. Even for such low factional interaction, plastic deformation is still the major cause of friction in crystalline systems, as suggested by the existence of dislocation etch pits on silicon surfaces along the sliding track.
| Original language | English |
|---|---|
| Pages (from-to) | 873-879 |
| Number of pages | 7 |
| Journal | Wear |
| Volume | 162-164 |
| Issue number | PART B |
| DOIs | |
| Publication status | Published - 1993 Apr 13 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
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Frictional behavior of extremely smooth and hard solids. / Kim, Dae Eun; Suh, N. P.
In: Wear, Vol. 162-164, No. PART B, 13.04.1993, p. 873-879.Research output: Contribution to journal › Article
TY - JOUR
T1 - Frictional behavior of extremely smooth and hard solids
AU - Kim, Dae Eun
AU - Suh, N. P.
PY - 1993/4/13
Y1 - 1993/4/13
N2 - Frictional behavior of extremely smooth (average roughness ~1 nm) and hard (approximately 800-2200 kg mm-2) solids in air has been investigated. The present study was conducted to obtain the minimum friction under dry sliding conditions by eliminating the friction components due to mechanical interactions such as plowing and asperity deformation. By using extremely smooth and hard materials (silicon, sapphire, SiC, quartz and glass), static friction coefficients as low as 0.06 and steady state friction coefficients between 0.09 and 0.17 could be obtained with an undetectable amount of wear. The low friction and wear behavior of smooth and hard solids in air is attributed to the low probability of asperity interaction and wear particle generation as well as to surface films. Even for such low factional interaction, plastic deformation is still the major cause of friction in crystalline systems, as suggested by the existence of dislocation etch pits on silicon surfaces along the sliding track.
AB - Frictional behavior of extremely smooth (average roughness ~1 nm) and hard (approximately 800-2200 kg mm-2) solids in air has been investigated. The present study was conducted to obtain the minimum friction under dry sliding conditions by eliminating the friction components due to mechanical interactions such as plowing and asperity deformation. By using extremely smooth and hard materials (silicon, sapphire, SiC, quartz and glass), static friction coefficients as low as 0.06 and steady state friction coefficients between 0.09 and 0.17 could be obtained with an undetectable amount of wear. The low friction and wear behavior of smooth and hard solids in air is attributed to the low probability of asperity interaction and wear particle generation as well as to surface films. Even for such low factional interaction, plastic deformation is still the major cause of friction in crystalline systems, as suggested by the existence of dislocation etch pits on silicon surfaces along the sliding track.
UR - http://www.scopus.com/inward/record.url?scp=0027578942&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027578942&partnerID=8YFLogxK
U2 - 10.1016/0043-1648(93)90089-5
DO - 10.1016/0043-1648(93)90089-5
M3 - Article
AN - SCOPUS:0027578942
VL - 162-164
SP - 873
EP - 879
JO - Wear
JF - Wear
SN - 0043-1648
IS - PART B
ER -