Notice catalographique « Using electrochemical impedance spectroscopy to measure potential coating failure caused by variable environmental conditions »
- Titre
- Using electrochemical impedance spectroscopy to measure potential coating failure caused by variable environmental conditions
- Auteur ou éditeur
- Profir, Carina
- Queen's University (Kingston, ON)
- Lieu de publication
- Kingston, ON
- Maison d'édition
- Queen's University
- Date de publication
- 2019
- Collation
- 79 pages : illustrations (chiefly colour), charts, tables
- Série
- Queen's Master in Art Conservation
- Résumé
- Metals exposed to variable and uncontrollable environmental conditions are typically coated in order to protect them and maintain their longevity. Electrochemical impedance spectroscopy (EIS) is a non-destructive method that has been used to measure and predict the performance of a coating on metal. In the context of cultural heritage, EIS has been used extensively to test a number of coatings, especially on bronzes. There has been less published on the use of EIS to test coatings on iron and steel artifacts, which can include anything from historical artifacts, industrial objects, or contemporary sculpture. The quality of a coating depends on a number of factors, including application methods, and temperatures and humidity levels under which the coating should be applied, as recommended by specific manufacturer instructions. However, because of time, budget, and other factors, conservators and heritage technicians may be required to apply these paints or coatings under less than ideal conditions, thus compromising the quality of the coating. EIS was used to detect differences in the performance of wax coatings applied to steel coupons under two environmental conditions: 1) ambient conditions in a conservation laboratory (18 - 20°C, 31 - 32% RH) and 2) outdoor conditions in a residential area (0°C, 50 - 68% RH). EIS measurements of the coupons were taken before and after accelerated aging in a temperature and relative humidity chamber, for a period of 20 days. Preliminary results show great variability in impedance values, Z, from between coupons and coupon set, with higher values for coatings applied outdoors, overall.
- Notes
- Thesis (M.A.) -- Queen's University, 2019
- Langue
- English = Anglais
- Sujet
- Metals - Conservation and restoration
- Metals - Analysis
- Metals - Testing
- Protective coatings - Testing
- Protective coatings - Materials
- Métaux - Conservation et restauration
- Métaux - Analyse
- Métaux - Essais
- Revêtements protecteurs - Essais
- Revêtements protecteurs - Analyse
- Pays
- Canada
- Type de document
- Monograph = Monographie
- Localisation
- TA 418.76 P76 2019
- Clé
- 19910
- Collection
- Catalogue