Počet záznamů: 1
Microstructure and mechanical properties of Ni and Ta doped TiB2
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SYSNO ASEP 0450458 Druh ASEP A - Abstrakt Zařazení RIV Není vybrán druh dokumentu Název Microstructure and mechanical properties of Ni and Ta doped TiB2 Tvůrce(i) Chlup, Zdeněk (UFM-A) RID, ORCID
Bača, L. (AT)
Halasová, Martina (UFM-A)
Neubauer, E. (AT)
Hadraba, Hynek (UFM-A) RID, ORCID
Stelzer, N. (AT)
Dlouhý, Ivo (UFM-A) RID, ORCIDCelkový počet autorů 7 Zdroj.dok. 14th International Conference European Ceramics Society. - Toledo : ECERS, 2015 - ISBN 978-84-606-9257-7 Poč.str. 1 s. Forma vydání Nosič - C Akce ECERS 14 - International Conference of the European Ceramic Society /14./ Datum konání 21.06.2015-25.06.2015 Místo konání Toledo Země ES - Španělsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. ES - Španělsko Klíč. slova microstructure ; mechanical properties ; titanium diboride Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP ED1.1.00/02.0068 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFM-A - RVO:68081723 Anotace The effect of metallic dop ants on the microstructure and mechanical properties of titanium diboride (TiB 2 ) were studied. As a dopants Ni and Ta was selected based on the theoretical calculations. Two methods for consolidation were applied the standard and the rapid hot - pressing. Th e sintering process was significantly affected by the addition of metallic dopants. The final densification of prepared composite materials strongly depends on both the amount and presence of individual dopants in the powder mixture. The microstructure was refined when tantalum was present; however, the only tantalum addition did not bring enhanced mechanical properties. The positive influence of both dopants on the microstructure and fracture behaviour was demonstrated by means of assessing the microstruct ure and mechanical properties and fractographic analysis. The effect of zirconia particles originating in the processing route on the microstructure and properties is discussed. This new approach, where the careful selection of metallic dopants is needed, led to the refinement of the microstructure, resulting in an increase of the flexural strength above the level of 700 MPa and the fracture toughness to 6.0 MPa.m 1/2 . It was demonstrated that application of lower sintering temperature is possible when rapid hot pressing method is used. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2016
Počet záznamů: 1