Electrochemical and mechanical interactions during erosion-corrosion of a high-velocity oxy-fuel coating and a stainless steel

T. Hodgkiess, A. Neville, S. Shrestha

Research output: Contribution to journalArticle

Abstract

This paper describes the results of a study of the erosion-corrosion behaviour of a thermally sprayed Ni-Cr-Si-B-C cermet coating in saline solution in the presence and absence of solid particles. The water, at ambient temperature, impinged perpendicularly onto the specimen surface at a velocity of 17 m/s. Emphasis was placed on the assessment of the contribution of corrosion processes to the overall erosion-corrosion deterioration. For comparison purposes in terms of performance and degradation mechanisms, parallel tests were carried out on a standard stainless steel alloy (UNS S31603). The study provided clear evidence of the crucial role of corrosion processes in governing the extent (totalling about 30% in solid/liquid impingement) and mechanisms of erosion-corrosion of the cermet material. The cermet coating was found to undergo less weight loss than the stainless steel in solid/liquid conditions but vice-versa during solid-free impingement and this was attributed to the relative influences of erosion and corrosion.

Original languageEnglish
Pages (from-to)623-634
Number of pages12
JournalWear
Volume233-235
DOIs
Publication statusPublished - Dec 1999
Event1998 International Conference on Erosive and Abrasive Wear - 9th International Conference on Erosion by Liquid and Solid Impact - Cambridge, UK
Duration: 13 Sep 199817 Sep 1998

Fingerprint

Erosion
Stainless steel
Corrosion
Coatings
Liquids
Alloy steel
Deterioration
Degradation
Water
Temperature

Keywords

  • Cermets
  • Erosion-corrosion
  • HVOF spraying
  • Stainless steel
  • Synergism

Cite this

@article{5cbaa59f9f2c4567ba509ec196f414aa,
title = "Electrochemical and mechanical interactions during erosion-corrosion of a high-velocity oxy-fuel coating and a stainless steel",
abstract = "This paper describes the results of a study of the erosion-corrosion behaviour of a thermally sprayed Ni-Cr-Si-B-C cermet coating in saline solution in the presence and absence of solid particles. The water, at ambient temperature, impinged perpendicularly onto the specimen surface at a velocity of 17 m/s. Emphasis was placed on the assessment of the contribution of corrosion processes to the overall erosion-corrosion deterioration. For comparison purposes in terms of performance and degradation mechanisms, parallel tests were carried out on a standard stainless steel alloy (UNS S31603). The study provided clear evidence of the crucial role of corrosion processes in governing the extent (totalling about 30{\%} in solid/liquid impingement) and mechanisms of erosion-corrosion of the cermet material. The cermet coating was found to undergo less weight loss than the stainless steel in solid/liquid conditions but vice-versa during solid-free impingement and this was attributed to the relative influences of erosion and corrosion.",
keywords = "Cermets, Erosion-corrosion, HVOF spraying, Stainless steel, Synergism",
author = "T. Hodgkiess and A. Neville and S. Shrestha",
year = "1999",
month = "12",
doi = "10.1016/S0043-1648(99)00246-X",
language = "English",
volume = "233-235",
pages = "623--634",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier",

}

Electrochemical and mechanical interactions during erosion-corrosion of a high-velocity oxy-fuel coating and a stainless steel. / Hodgkiess, T.; Neville, A.; Shrestha, S.

In: Wear, Vol. 233-235, 12.1999, p. 623-634.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrochemical and mechanical interactions during erosion-corrosion of a high-velocity oxy-fuel coating and a stainless steel

AU - Hodgkiess, T.

AU - Neville, A.

AU - Shrestha, S.

PY - 1999/12

Y1 - 1999/12

N2 - This paper describes the results of a study of the erosion-corrosion behaviour of a thermally sprayed Ni-Cr-Si-B-C cermet coating in saline solution in the presence and absence of solid particles. The water, at ambient temperature, impinged perpendicularly onto the specimen surface at a velocity of 17 m/s. Emphasis was placed on the assessment of the contribution of corrosion processes to the overall erosion-corrosion deterioration. For comparison purposes in terms of performance and degradation mechanisms, parallel tests were carried out on a standard stainless steel alloy (UNS S31603). The study provided clear evidence of the crucial role of corrosion processes in governing the extent (totalling about 30% in solid/liquid impingement) and mechanisms of erosion-corrosion of the cermet material. The cermet coating was found to undergo less weight loss than the stainless steel in solid/liquid conditions but vice-versa during solid-free impingement and this was attributed to the relative influences of erosion and corrosion.

AB - This paper describes the results of a study of the erosion-corrosion behaviour of a thermally sprayed Ni-Cr-Si-B-C cermet coating in saline solution in the presence and absence of solid particles. The water, at ambient temperature, impinged perpendicularly onto the specimen surface at a velocity of 17 m/s. Emphasis was placed on the assessment of the contribution of corrosion processes to the overall erosion-corrosion deterioration. For comparison purposes in terms of performance and degradation mechanisms, parallel tests were carried out on a standard stainless steel alloy (UNS S31603). The study provided clear evidence of the crucial role of corrosion processes in governing the extent (totalling about 30% in solid/liquid impingement) and mechanisms of erosion-corrosion of the cermet material. The cermet coating was found to undergo less weight loss than the stainless steel in solid/liquid conditions but vice-versa during solid-free impingement and this was attributed to the relative influences of erosion and corrosion.

KW - Cermets

KW - Erosion-corrosion

KW - HVOF spraying

KW - Stainless steel

KW - Synergism

UR - http://www.scopus.com/inward/record.url?scp=0033306438&partnerID=8YFLogxK

U2 - 10.1016/S0043-1648(99)00246-X

DO - 10.1016/S0043-1648(99)00246-X

M3 - Article

VL - 233-235

SP - 623

EP - 634

JO - Wear

JF - Wear

SN - 0043-1648

ER -