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Fabrication of TiO2 nanowhiskers by the heat treatment of bulk Ti3Si0.9Al0.1C2 in rough vacuum
Gai, Jianli; Chen, Jixin; Zhang, Hui; Liu, Zhimou; Li, Meishuan; Zhou, Yanchun; Chen, JX (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
2016-05-01
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Volume42Issue:6Pages:6868-6873
AbstractRutile TiO2 nanowhiskers with [0 0 1] growth direction were successfully fabricated by treating bulk Ti3Si0.9Al0.1C2 solid solution at 900 degrees C in 10(4) Pa air. In the initial stage, TiO2 nanowhiskers are preferentially formed on the side facets of Ti3Si0.9Al0.1C2 grains due to the rapid diffusion of Ti atoms along the basal planes. With the increase of treating time, a mixed oxide scale of TiO2, SiO2 and Al2O3 is gradually developed. Consequently, the growth of TiO2 nanowhiskers is controlled by the diffusion of Ti in the mixed oxide scale. In addition, it is found that the growth rate of TiO2 nanowhiskers strongly depends on the air pressure and the treating temperature. It diminishes dramatically with the decrease of temperature. However, only TiO2 nanosheets and large grains can be obtained above 1000 degrees C. In addition, air pressure around 104 Pa is appropriate for the growth of nanowhiskers. (c) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
description.department[gai, jianli ; chen, jixin ; zhang, hui ; liu, zhimou ; li, meishuan] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [gai, jianli ; zhang, hui ; liu, zhimou] univ chinese acad sci, beijing 100039, peoples r china ; [zhou, yanchun] aerosp res inst mat & proc technol, sci & technol adv funct composite lab, beijing 100076, peoples r china
KeywordWhiskers Diffusion Tio2 Ti3si0.9al0.1c2
Subject AreaMaterials Science
Funding OrganizationNational Natural Science Foundation of China [50802099, 51072201]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75902
Collection中国科学院金属研究所
Corresponding AuthorChen, JX (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Gai, Jianli,Chen, Jixin,Zhang, Hui,et al. Fabrication of TiO2 nanowhiskers by the heat treatment of bulk Ti3Si0.9Al0.1C2 in rough vacuum[J]. CERAMICS INTERNATIONAL,2016,42(6):6868-6873.
APA Gai, Jianli.,Chen, Jixin.,Zhang, Hui.,Liu, Zhimou.,Li, Meishuan.,...&Chen, JX .(2016).Fabrication of TiO2 nanowhiskers by the heat treatment of bulk Ti3Si0.9Al0.1C2 in rough vacuum.CERAMICS INTERNATIONAL,42(6),6868-6873.
MLA Gai, Jianli,et al."Fabrication of TiO2 nanowhiskers by the heat treatment of bulk Ti3Si0.9Al0.1C2 in rough vacuum".CERAMICS INTERNATIONAL 42.6(2016):6868-6873.
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