Electrochemical property and corrosion behavior of multi-directionally forged titanium in fluoride solution

被引：4
作者：
Suzuki, Ginga [1 ]
Hoshi, Noriyuki [2 ]
Kimoto, Katsuhiko [2 ]
Miura, Hiromi [3 ]
Hayakawa, Tohru [4 ]
Ohkubo, Chikahiro [1 ]
机构：
[1] Tsurumi Univ, Sch Dent Med, Dept Removable Prosthodont, Tsurumi Ku, 2-1-3 Tsurumi, Yokohama, Kanagawa 2308501, Japan
[2] Kanagawa Dent Univ, Grad Sch Dent, Dept Oral Interdisciplinary Med Prosthodont & Ora, 82 Inaoka Cho, Yokosuka, Kanagawa 2388580, Japan
[3] Toyohashi Univ Technol, Dept Mech Engn, 1-1 Hibarigaoka,Tempaku Cho, Toyohashi, Aichi 4418580, Japan
[4] Tsurumi Univ, Sch Dent Med, Dept Dent Engn, Tsurumi Ku, 2-1-3 Tsurumi, Yokohama, Kanagawa 2308501, Japan
来源：
DENTAL MATERIALS JOURNAL | 2019年 / 38卷 / 05期
关键词：
Multi-directional forging; Ultrafine grain; Titanium implant; Corrosion; Fluoride; PURE TITANIUM; SURFACE CHARACTERIZATION; ALLOYS; TI; ALBUMIN; MICROSTRUCTURES; RESISTANCE;
D O I：
10.4012/dmj.2018-191
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
Multi-directional forging (MDFing) can improve the various properties of metals and alloys due to the evolution of an ultrafine-grained structure. In the present study, electrochemical properties and corrosion behaviors in a fluoride solution of MDFed pure titanium (MDF-Ti) were evaluated by comparing with conventional coarse-grained pure titanium (Ti). The E-open value of MDF-Ti was significantly higher than that of Ti. However, similar potentiodynamic polarization profiles were obtained for Ti and MDF-Ti. Immersion in NaF solution caused no severe corrosion to Ti or MDF-Ti. However, immersion in acidulate phosphate fluoride solution (APF) revealed that MDF-Ti had better corrosion resistance than Ti at shorter time immersion periods and was more susceptible to corrosion for longer immersion. Significantly less release of titanium was observed for MDF-Ti in shorter immersion periods in APF. In conclusion, MDF-Ti showed similar electrochemical behaviors to Ti and less susceptible to corrosion in shorter time APF immersion.
引用
收藏
页码：845 / 853
页数：9
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