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1166 |
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Tuesday, June 03, 2008, Room 05 2:00 PM Case Studies and Further Applications 2 showing the broad variety of thermal spraying in different examples, special processes and also specialised materials apart from standard coatings offer new possibilities and also new markets |
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Electrically conductive flame sprayed aluminium coatings on textile substrates |
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Joel Voyer* / LKR Leichtmetallkompetenzzentrum Ranshofen GmbH, Austria Peter Schulz/ ARC-Leichtmetallkompetenzzentrum Ranshofen GmbH, Austria Martha Schreiber/ Funktionswerkstoffe Forschung & Entwicklung GmbH, Austria |
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Electrically conductive and flexible Aluminium coatings using powder and wire flame spraying were successfully deposited onto diverse textile substrates. The influence of the process, spraying parameters and fabric substrate materials on the electrical conductivity and microstructure of the metal-fabric composites were studied. Preliminary results show that a specific coating quantity higher than 20 mg/cm2 is necessary for a very good coating surface conductivity. After the optimization of the spraying parameters, such as the standoff distance and the use of a cooling setup for the textile substrate, a very good specific surface conductivity (~500 Sٱ) could be obtained. Therefore, this optimization enables the reduction of the specific coating quantity while still keeping high conductivity values. Furthermore, the flexibility of the fabric substrates is better conserved when the coating quantity is lowered. This study showed that optimized electrically conductive composites onto flexible fabric substrates may be produced, without any preliminary thermal or chemical fabric specifications. |