Aesthetic and mechanical properties of oxide coated Ti-Nb-Ta-Zr alloys as a dental material

Eri Miura-Fujiwara, Keisuke Mizushima, Soichiro Yamada, Yoshimi Watanabe, Toshihiro Kasuga, Mitsuo Niinomi, Tohru Yamasaki

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

Metallic materials have been used as load-bearing materials in dental and biomedical field since they have good mechanical properties such as good ductility and strength, however, aesthetic property is inferior to ceramic or resin. Ti-29Nb-13Ta-4.6Zr alloy (TNTZ) is a β-type Ti alloy with excellent mechanical properties, low Young's modulus and controllable yield strength. Furthermore, oxide layer coating will improve its aesthetic property, as a dental material since it's oxide layer is firm and white. Therefore, effect of color tone change of oxide layer on Ti and TNTZ on oxidation condition was studied. The oxide formation behavior investigation was also carried out with focusing on peeling behavior. From the results of our color tone evaluation, L* and b* were increased with increasing heating time. From cross sectional observation, a firm white oxide layer formed on top which is consisted of TiO2 and Ti(Nb, Ta)2O7, whereas stratified TiO 2 was formed on CP Ti. Thickness increased with increasing oxidation time. Peel test results indicated that peel stress of oxide layer on TNTZ was much higher than that on CP Ti, indicating microstructure of oxide affected on peel strength. Our obtained results suggests that oxide layer coating on Ti alloys will be a promising candidate for a "white metal" having merits of metal in terms of mechanical properties besides improving excellent aesthetic property.

本文言語English
ホスト出版物のタイトル8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
出版社John Wiley and Sons Inc.
ページ1543-1550
ページ数8
ISBN(印刷版)9781632660008
DOI
出版ステータスPublished - 2013
イベント8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8 - Waikoloa, HI, United States
継続期間: 2013 8月 42013 8月 9

出版物シリーズ

名前8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
2

Other

Other8th Pacific Rim International Congress on Advanced Materials and Processing 2013, PRICM 8
国/地域United States
CityWaikoloa, HI
Period13/8/413/8/9

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料

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