A study on the elastic modulus of silicone duplex or bi-layer coatings using micro-indentation |
| |
| Affiliation: | 1. Chromalloy Dallas, Dallas, TX 75234, USA;2. Geo-Ceuters, Inc. Lanham, MD 20706, USA;1. Université de Lyon, CNRS, UMR 5223, INSA-Lyon, IMP@INSA, F-69621 Villeurbanne, France;2. Arkema, Centre de Recherche de l’Oise, Parc Technologique Alata, rue Jacques Taffanel, F-60550 Verneuil en Halatte, France;1. Surface Coatings and Corrosion Department, Institute for Color Science and Technology, Tehran, Iran;2. Center of Excellence for Color Science and Technology, Tehran, Iran;3. Nanomaterial and Nanotechnology Department, Institute for Color Science and Technology, Tehran, Iran;4. Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran;1. College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, PR China;2. Center for Renewable Carbon, University of Tennessee, Knoxville, TN 37996, USA;3. Material Science and Engineering College, Northeast Forestry University, Harbin 150040, PR China;1. Université de Technologie de Troyes (UTT), ICD-LASMIS, UMR CNRS 6281, 12, rue Marie Curie-CS 42060, 10010 Troyes Cedex, France;2. The French Aerospace Lab (ONERA), DMSM/MCE, 29 avenue de la Division Leclerc-BP 72, F-92322 Chatillon Cedex, France |
| |
| Abstract: | A Fischerscope continuous microindenter with a spherical indenter was used to obtain maximum indentation load and depth data for a 2.2 mm sheet of RTV11 (a silicone elastomer), a 1.6 mm sheet of J501 (an elastomer containing 60% silicone and 40% butyl acrylate styrene) as well as six duplex elastomeric coatings. The duplex coatings consisted of RTV11 top coat and J501 bond coat. The Waters’s empirical relationship was used to determine the modulus of elasticity E for the RTV11 and J501 sheets. The Waters’s relationship was then used to determine the equivalent modulus, Ec, for duplex coatings from maximum indentation load versus elastic indentation depth data. The values of Ec as determined from the Waters’s model (and experimental data) were in good agreement with the values obtained by an equivalent stiffness method. By being able to determine Ec from the equivalent stiffness method and using this value in the Waters’s model, one may determine the load versus elastic depth of indentation for duplex coatings. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
