Round-robin evaluation of ISO 20340 annex a test methodShow others and affiliations
2016 (English)In: NACE - International Corrosion Conference Series, 2016, p. 53-64Conference paper, Published paper (Refereed)
Abstract [en]
Among available standardized test methods for evaluating the performance of marine and offshore coatings, ISO 20340 Annex A is widely used.1 It is well known that tests performed on presumably identical materials in presumably similar circumstances do not in general yield to identical results. Such deviation is attributed to unavoidable random errors inherent in every test procedure and the fact that the parameters that may influence the outcome of a test cannot all be completely controlled. One consequence of such deviation is that different coating selection may be obtained upon where and how the test is performed, as ISO 20340 Annex A includes acceptance criteria for the selection of coating systems. Thus, to establish the precision of ISO 20340 Annex A, six laboratories participated in a round-robin evaluation of ISO 20340 Annex A test method for the first time. The aim was to estimate the repeatability and the reproducibility of this test upon laboratory, and eventually to determine how to improve the test method and the standard for the further revision of the standard. Five different painted systems applied on abrasive blasted steel were selected so that it included good and poor systems. The results of this study in terms of scribe creep and pull-off strength data were analyzed regarding the repeatability within a laboratory and lab-To-lab reproducibility.
Place, publisher, year, edition, pages
2016. p. 53-64
Series
NACE - International Corrosion Conference Series, ISSN 0361-4409
Keywords [en]
Corrosion test, ISO 20340, Marine paint, Round-robin, Coatings, Corrosion, Laboratories, Paint, Random errors, Routers, Acceptance criteria, Corrosion tests, Identical materials, Marine paints, Pull off strengths, Round Robin, Standardized tests, Acceptance tests
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-27668Scopus ID: 2-s2.0-84991696806ISBN: 9781510821354 (print)OAI: oai:DiVA.org:ri-27668DiVA, id: diva2:1059208
Conference
NACE International Corrosion 2016 Conference & Expo, March 6-10, 2016, Vancouver, Canada
Note
References: Paints and Varnishes - Performance Requirements for Protective Paint Systems for Offshore and Related Structures, , ISO 20340:2009, Geneva, Switzerland: ISO; Corrosion of Metals and Alloys - Corrosivity of Atmospheres - Classification, Determination and Estimation, , ISO 9223:2012 (Geneva, Switzerland: ISO); LeBozec, N., Hall-Fournier, C., Melot, D., Comparison of Accelerated Ageing Tests as per ISO 20340 Annex a and NACE SP0108 Standards, , CORROSION/14, paper 3762 (San Antonio, TX, NACE, 2014; Corrosion of Metals and Alloys - Removal of Corrosion Products from Corrosion Test Specimens, , ISO 8407:2014, (Geneva, Switzerland: ISO; Paints and Varnishes - Evaluation of Degradation of Coatings - Designation of Quantity and Size of Defects, and of Intensity of Uniform Changes in Appearance - Part 2- Assessment of Degree of Blistering, , ISO 4628-2:2004, Geneva, Switzerland: ISO; Paints and Varnishes - Evaluation of Degradation of Coatings - Designation of Quantity and Size of Defects, and of Intensity of Uniform Changes in Appearance - Part 3 - Assessment of Degree of Rusting, , ISO 4628-3:2004, Geneva, Switzerland: ISO; Paints and Varnishes - Pull-off Test for Adhesion, , ISO 4624:2003 (Geneva, Switzerland: ISO; Standard practice for conducting an interlaboratory study to determine the precision of a test method Annual Book of Standards, American Society for Testing Materials, , ASTM2 E 691-14; Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods, , ASTM E 177-14 ", ", Annual book of standards, American Society for Testing Materials (West Conshohocken, PA:ASTM; Townsend, H.E., McCune, D.C., Round robin evaluation of a new standard laboratory test for cosmetic corrosion (1997) Society of Automotive Engineers Intern, , Congress, Paper 970734 (Detroit, Michigan, SAE); LeBozec, N., Thierry, D., Le Calve, P., Favennec, C., Pautasso, J.-P., Hubert, C., (2015) Materials and Corrosion, 66 (3), pp. 215-225
2016-12-222016-12-212023-05-26Bibliographically approved