期刊
POLYMER TESTING
卷 41, 期 -, 页码 198-208出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2014.11.008
关键词
Automotive; Polymer; Scanning thermal microscopy; Thermal conductivity; Thermal diffusivity; Thin film
资金
- National Measurement System Directorate Programme for Materials and Modelling Metrology for the Department of Business, Innovation and Skills, UK
Advances in production are leading to increasing use of polymeric thin films in applications such as automotive bearings. Two approaches have been developed to study the thermophysical properties of these thin films: The first technique based on Flash theory uses a scanning thermal microscopy (SThM) tip in temperature contrast mode to measure thermal diffusivity over a nano-scale area. The SThM tip is in contact with the upper surface of the film to detect a heat pulse delivered by a microelectromechanical heater platform from the lower surface. The second technique is a conductivity contrast mode SThM based approach for measuring the size and distribution of thermally conducting particles in thin film polymeric coatings. Topographical and thermal conductivity data are combined to produce a correlation analysis value 3D particle map of the coating. Good practice and a case study are highlighted. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.
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