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Improvement of Mechanical Properties on a Surface of Bulk Ceramics
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SYSNO ASEP 0332308 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Improvement of Mechanical Properties on a Surface of Bulk Ceramics Title Zlepšení mechanických vlastností povrchu keramiky Author(s) Ctibor, Pavel (UFP-V) RID, ORCID
Kraus, L. (CZ)Source Title Proceedings of the 22nd International Conference on Surface Modification Technologies, C120. - Trollhättan : University West, 2009 / Sudarshan T.S. ; Nylen P. - ISBN 978-0-9817065-1-1 Pages s. 247-254 Number of pages 8 s. Action International Conference on Surface Modification Technologies SMT22/22./ Event date 22.09.2008-24.09.2008 VEvent location Trollhättan Country SE - Sweden Event type WRD Language eng - English Country SE - Sweden Keywords Bulk ceramics ; plasma post-treatment ; diode laser ; wear resistance ; mechanical testing Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass R&D Projects 1QS200430560 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20430508 - UFP-V (2005-2011) Annotation Ways to improve mechanical properties on a surface of bulk ceramics were presented. First of all, samples of bulk ceramics were superficially remelted by a diode laser Rofin DL 031Q. In the series of following experiments the authors achieved a similar kind of surface treatment with a plasma torch conventionally utilized for plasma spraying. Commercial bulk ceramic materials produced via sintering or casting were treated. The materials were members of ternary systems, such as, magnesia-alumina-silica and zirconia-alumina-silica. Before and after thermal treatment, the microstructure was studied and the microhardness was measured in surface layers and also deep inside the bulk body. Slurry abrasion resistance was determined as well. Microhardness and wear resistance is improved with Eucor and at certain degree also regarding cordierite. The microstructural character of a completely remelted external layer, partly influenced intermediate layers, and the original bulk body is discussed. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2010
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