Abstract
The erosive wear associated with growth defects was studied in deaerated 0.5 M (Na2CO3-NaHCO3) buffer solutions containing 150-200 mum alumina particles on a rotating cylinder erosion-corrosion system for PVD CrN/NbN superlattice coatings grown by the are bond sputtering (ABS) process on mild steel BS6323. Corrosion was minimised by selective control of the sample's potential, according to potentiodynamic polarisation, during the slurry erosive wear test. The morphology of the coatings, particularly of the defects, was examined in planar and cross-section views by means of scanning electron microscopy before and after the test. It is found that wear of the coating is typically preferential to the defects, progressing from the particle exterior top to the interior with erosion time, while the coating matrix (areas free of such defects) is largely intact, after 24 h prolonged exposure to erosion. (C) 2000 Elsevier Science B.V. All rights reserved.
| Language | English |
|---|---|
| Pages | 82-90 |
| Number of pages | 9 |
| Journal | Surface and Coatings Technology |
| Volume | 135 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Dec 2000 |
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Keywords
- erosive wear
- erosion
- macroparticles
- droplets
- PVD
- arc bond sputtering
- steered arc evaporation
- unbalanced magntron
- thin films
- hard coatings
- CRN coatings
- tin films
- corrosion
- deposition
- fabrication
- technology
Cite this
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Wear associated with growth defects in combined cathodic arc/unbalanced magnetron sputtered CrN/NbN superlattice coatings during erosion in alkaline slurry. / Wang, H.W.; Stack, M.M.; Lyon, S.B.; Hovsepian, P.; Munz, W.D. .
In: Surface and Coatings Technology, Vol. 135, No. 1, 12.2000, p. 82-90.Research output: Contribution to journal › Article
TY - JOUR
T1 - Wear associated with growth defects in combined cathodic arc/unbalanced magnetron sputtered CrN/NbN superlattice coatings during erosion in alkaline slurry
AU - Wang, H.W.
AU - Stack, M.M.
AU - Lyon, S.B.
AU - Hovsepian, P.
AU - Munz, W.D.
PY - 2000/12
Y1 - 2000/12
N2 - The erosive wear associated with growth defects was studied in deaerated 0.5 M (Na2CO3-NaHCO3) buffer solutions containing 150-200 mum alumina particles on a rotating cylinder erosion-corrosion system for PVD CrN/NbN superlattice coatings grown by the are bond sputtering (ABS) process on mild steel BS6323. Corrosion was minimised by selective control of the sample's potential, according to potentiodynamic polarisation, during the slurry erosive wear test. The morphology of the coatings, particularly of the defects, was examined in planar and cross-section views by means of scanning electron microscopy before and after the test. It is found that wear of the coating is typically preferential to the defects, progressing from the particle exterior top to the interior with erosion time, while the coating matrix (areas free of such defects) is largely intact, after 24 h prolonged exposure to erosion. (C) 2000 Elsevier Science B.V. All rights reserved.
AB - The erosive wear associated with growth defects was studied in deaerated 0.5 M (Na2CO3-NaHCO3) buffer solutions containing 150-200 mum alumina particles on a rotating cylinder erosion-corrosion system for PVD CrN/NbN superlattice coatings grown by the are bond sputtering (ABS) process on mild steel BS6323. Corrosion was minimised by selective control of the sample's potential, according to potentiodynamic polarisation, during the slurry erosive wear test. The morphology of the coatings, particularly of the defects, was examined in planar and cross-section views by means of scanning electron microscopy before and after the test. It is found that wear of the coating is typically preferential to the defects, progressing from the particle exterior top to the interior with erosion time, while the coating matrix (areas free of such defects) is largely intact, after 24 h prolonged exposure to erosion. (C) 2000 Elsevier Science B.V. All rights reserved.
KW - erosive wear
KW - erosion
KW - macroparticles
KW - droplets
KW - PVD
KW - arc bond sputtering
KW - steered arc evaporation
KW - unbalanced magntron
KW - thin films
KW - hard coatings
KW - CRN coatings
KW - tin films
KW - corrosion
KW - deposition
KW - fabrication
KW - technology
U2 - 10.1016/S0257-8972(00)00913-0
DO - 10.1016/S0257-8972(00)00913-0
M3 - Article
VL - 135
SP - 82
EP - 90
JO - Surface and Coatings Technology
T2 - Surface and Coatings Technology
JF - Surface and Coatings Technology
SN - 0257-8972
IS - 1
ER -