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Plasma spraying in enhanced gravitational field
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SYSNO ASEP 0103258 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Plasma spraying in enhanced gravitational field Title Plazmové nástřiky ve zvýšeném gravitačním poli Author(s) Brožek, Vlastimil (UFP-V) RID Source Title Proceedings of the 14th Joint Seminar "Development of Materials Science in Research and Education". - Praha : MAXDORF,s.r.o, 2004 / Nitsch K. ; Rodová M. - ISBN 80-7345-032-1 Pages s. 5-6 Number of pages 2 s. Action Development of Materials Science in Research and Education - DMS-RE 2004 /14./ Event date 31.08.2004-03.09.2004 VEvent location Lednice Country CZ - Czech Republic Event type CST Language eng - English Country CZ - Czech Republic Keywords plasma spraying, enhanced gravitational field, ceramic densification Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass CEZ AV0Z2043910 - UFP-V Annotation Porosity – and thus density – of plasma sprayed materials can be influenced by kinetic parameters of the particles flying in the plasma jet. These parameters can be improved by increased gravity field. In an analogy to centrifugal casting, we have verified the possibility of plasma deposition on substrates placed on the inside perimeter of a centrifuge. A WSP® plasma generator with a 100 kW power was used. The calculated gravity acceleration was 307 ms-2, corresponding to a 30 MPa pressure on the substrate. Alternative method of ceramics densification, HIPping at 150 MPa, reduces porosity to below 5%. In our case, porosity of an alumina deposit was reduced from 8.74% to 7.82%. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2005
Number of the records: 1