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Paper Abstract and Keywords
Presentation 2017-04-21 14:05
Charge storage behavior of zirconia ceramics under DC electric field -- Preparation of Y-TZP bioceramics with enhanced LTD durability --
Yumi Tanaka (Tokyo Univ. of Sci.), Hiroyuki Hara (Kyushu Univ.) SDM2017-8 OME2017-8 Link to ES Tech. Rep. Archives: SDM2017-8 OME2017-8
Abstract (in Japanese) (See Japanese page) 
(in English) Yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) is an important load-bearing bioceramic. However, a phenomenon called LTD, in which a phase destabilization occurs under moisture, reduces the reliability of Y-TZP as long-term implants. Since the exact mechanism of LTD is still unclear, this work was directed to evaluate an influence of surface charges of Y-TZP on LTD. Y-TZP were polarized under DC electrical field to vary surface O2- concentrations, which resulted in a successful preparation of Y-TZP surfaces with stable static charges. LTD durability was significantly influenced by the polarity on the surfaces; the negatively-charged surface was proved to show a good LTD durability.
Keyword (in Japanese) (See Japanese page) 
(in English) Yttria-stabilized zirconia / bioceramic / oxide ion conduction / polarization / surface charges / low temperature degradation / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 8, OME2017-8, pp. 35-39, April 2017.
Paper # OME2017-8 
Date of Issue 2017-04-13 (SDM, OME) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF SDM2017-8 OME2017-8 Link to ES Tech. Rep. Archives: SDM2017-8 OME2017-8

Conference Information
Committee OME SDM  
Conference Date 2017-04-20 - 2017-04-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Tatsugochou Shougaigakushuu Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Organic molecular devices, silicon device, biotechnology, thin film device, novel material, evaluation method, etc 
Paper Information
Registration To OME 
Conference Code 2017-04-OME-SDM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Charge storage behavior of zirconia ceramics under DC electric field 
Sub Title (in English) Preparation of Y-TZP bioceramics with enhanced LTD durability 
Keyword(1) Yttria-stabilized zirconia  
Keyword(2) bioceramic  
Keyword(3) oxide ion conduction  
Keyword(4) polarization  
Keyword(5) surface charges  
Keyword(6) low temperature degradation  
1st Author's Name Yumi Tanaka  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Sci.)
2nd Author's Name Hiroyuki Hara  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
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Speaker Author-1 
Date Time 2017-04-21 14:05:00 
Presentation Time 45 minutes 
Registration for OME 
Paper # SDM2017-8, OME2017-8 
Volume (vol) vol.117 
Number (no) no.7(SDM), no.8(OME) 
Page pp.35-39 
Date of Issue 2017-04-13 (SDM, OME) 

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