Coating evaluation methods

a round robin study

Helena Ronkainen, Simo Varjus, Kenneth Holmberg, Kevin Fancey, A. Pace, Allan Matthews, Bernd Matthes, Erhard Broszeit

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

11 Citations (Scopus)

Abstract

This paper reports work carried out at three laboratories, aimed at assessing the repeatability of various test methods used in the study of tribological coatings. The test methods were the ball crater technique for coating thickness, the Vickers microhardness test, the scratch test for adhesion and the pin on disc test for friction and wear. Three different coatings were studied, based on various compounds of titanium, boron, nitrogen and aluminium. Also different novel ionisation assisted PVD methods were used to produce the coatings The paper demonstrates the spread of results obtained by each of the tests on each of the coatings, both within each laboratory and also between laboratories. The results show that assessment of properties such as thickness and hardness can be made with reasonable repeatablity; greater care must be taken however in ascribing quantitive measures to adhesion levels. In particular it is necessary to define the criteria to be used for failure. In the case of friction and wear assessment the laboratories involved demonstrated that considerable variability can be seen, both in friction coefficients and wear rates. Nevertheless we demonstrate that the tests described provide a good basis for the assessment of coating properties and for the investigation of tribological behaviour, permitting further coating development.
Original languageEnglish
Title of host publicationMechanics of Coatings
Subtitle of host publicationProceedings of the 16th Leeds-Lyon Symposium on Tribology held at The lnstitut National des Sciences Appliquées
Pages453-463
DOIs
Publication statusPublished - 1990
MoE publication typeA4 Article in a conference publication

Publication series

NameTribology Series
Volume17
ISSN (Print)0167-8922

Fingerprint

Coatings
Wear of materials
Friction
Adhesion
Physical vapor deposition
Microhardness
Ionization
Boron
Titanium
Hardness
Nitrogen
Aluminum

Cite this

Ronkainen, H., Varjus, S., Holmberg, K., Fancey, K., Pace, A., Matthews, A., ... Broszeit, E. (1990). Coating evaluation methods: a round robin study. In Mechanics of Coatings: Proceedings of the 16th Leeds-Lyon Symposium on Tribology held at The lnstitut National des Sciences Appliquées (pp. 453-463). [Paper XX (i)] Tribology Series, Vol.. 17 https://doi.org/10.1016/S0167-8922(08)70285-2
Ronkainen, Helena ; Varjus, Simo ; Holmberg, Kenneth ; Fancey, Kevin ; Pace, A. ; Matthews, Allan ; Matthes, Bernd ; Broszeit, Erhard. / Coating evaluation methods : a round robin study. Mechanics of Coatings: Proceedings of the 16th Leeds-Lyon Symposium on Tribology held at The lnstitut National des Sciences Appliquées. 1990. pp. 453-463 (Tribology Series, Vol. 17).
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Ronkainen, H, Varjus, S, Holmberg, K, Fancey, K, Pace, A, Matthews, A, Matthes, B & Broszeit, E 1990, Coating evaluation methods: a round robin study. in Mechanics of Coatings: Proceedings of the 16th Leeds-Lyon Symposium on Tribology held at The lnstitut National des Sciences Appliquées., Paper XX (i), Tribology Series, vol. 17, pp. 453-463. https://doi.org/10.1016/S0167-8922(08)70285-2

Coating evaluation methods : a round robin study. / Ronkainen, Helena; Varjus, Simo; Holmberg, Kenneth; Fancey, Kevin; Pace, A.; Matthews, Allan; Matthes, Bernd; Broszeit, Erhard.

Mechanics of Coatings: Proceedings of the 16th Leeds-Lyon Symposium on Tribology held at The lnstitut National des Sciences Appliquées. 1990. p. 453-463 Paper XX (i) (Tribology Series, Vol. 17).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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T1 - Coating evaluation methods

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AU - Ronkainen, Helena

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AU - Matthews, Allan

AU - Matthes, Bernd

AU - Broszeit, Erhard

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N2 - This paper reports work carried out at three laboratories, aimed at assessing the repeatability of various test methods used in the study of tribological coatings. The test methods were the ball crater technique for coating thickness, the Vickers microhardness test, the scratch test for adhesion and the pin on disc test for friction and wear. Three different coatings were studied, based on various compounds of titanium, boron, nitrogen and aluminium. Also different novel ionisation assisted PVD methods were used to produce the coatings The paper demonstrates the spread of results obtained by each of the tests on each of the coatings, both within each laboratory and also between laboratories. The results show that assessment of properties such as thickness and hardness can be made with reasonable repeatablity; greater care must be taken however in ascribing quantitive measures to adhesion levels. In particular it is necessary to define the criteria to be used for failure. In the case of friction and wear assessment the laboratories involved demonstrated that considerable variability can be seen, both in friction coefficients and wear rates. Nevertheless we demonstrate that the tests described provide a good basis for the assessment of coating properties and for the investigation of tribological behaviour, permitting further coating development.

AB - This paper reports work carried out at three laboratories, aimed at assessing the repeatability of various test methods used in the study of tribological coatings. The test methods were the ball crater technique for coating thickness, the Vickers microhardness test, the scratch test for adhesion and the pin on disc test for friction and wear. Three different coatings were studied, based on various compounds of titanium, boron, nitrogen and aluminium. Also different novel ionisation assisted PVD methods were used to produce the coatings The paper demonstrates the spread of results obtained by each of the tests on each of the coatings, both within each laboratory and also between laboratories. The results show that assessment of properties such as thickness and hardness can be made with reasonable repeatablity; greater care must be taken however in ascribing quantitive measures to adhesion levels. In particular it is necessary to define the criteria to be used for failure. In the case of friction and wear assessment the laboratories involved demonstrated that considerable variability can be seen, both in friction coefficients and wear rates. Nevertheless we demonstrate that the tests described provide a good basis for the assessment of coating properties and for the investigation of tribological behaviour, permitting further coating development.

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Ronkainen H, Varjus S, Holmberg K, Fancey K, Pace A, Matthews A et al. Coating evaluation methods: a round robin study. In Mechanics of Coatings: Proceedings of the 16th Leeds-Lyon Symposium on Tribology held at The lnstitut National des Sciences Appliquées. 1990. p. 453-463. Paper XX (i). (Tribology Series, Vol. 17). https://doi.org/10.1016/S0167-8922(08)70285-2