Characterization of fuzzy interface in biomaterials by HREM

HREM 表征生物材料中的模糊界面

• 批准号: 07045053
• 负责人: HISATSUNE Kunihiro
• 金额: $ 3.65万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for international Scientific Research
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07045053/
• 关键词: High resolution electron microscopy; Functionally graded material; Interface; Biomaterial; Composite material; Ion engineering; Ceramics; Metal bond porcelain; 複合材料; イオン工学; 歯科用金合金; 白金; 規則格子変態; 相分解; 時効硬化; 制限視野電子回折; X線回折

The present study was planned to evaluate the bond characteristics in a metal-ceramic composite with better bio-compatibility. It is very important to understand nature of the interface. The investigation of the formation process and the fundamental structure within the interface between metal and ceramics is an important requirement for improving the bonding technique. Two signiticant conclusions were mainly obtained as follows ;1. It was constructed how to produce better specimen for high resolution transmission electron microscopic observations on the interface of the composite materials. This technique is very effective to perform a direct observation. Especially, the present study was employed for the interface of the materials with remarkably different mechanical properties.2. It is determined that the dental gold alloy and the dental porcelain were directly bonded without any intermediate layrs. This is new evidence for the system. It means that previous conclusion was rejected. The previous data were not obtained at interface itself but at the vicinity. The EPMA data which were previously obtained, correspond to the information in micrometer scale, while the present HREM data were obtained in nanometer scale.

本研究计划评估具有更好生物相容性的金属陶瓷复合材料的粘合特性。了解接口的本质非常重要。研究金属与陶瓷界面的形成过程和基本结构是改进键合技术的重要要求。主要得到以下两个重要结论： 1．构建了如何生产更好的样品以用于复合材料界面的高分辨率透射电子显微镜观察。这种技术对于进行直接观察非常有效。特别是，本研究针对机械性能显着不同的材料的界面进行了研究。 2．确定牙科金合金和牙科烤瓷直接粘合，没有任何中间层。这是该系统的新证据。这意味着之前的结论被否定了。之前的数据不是在界面本身获取的，而是在界面附近获取的。之前获得的EPMA数据对应于微米尺度的信息，而目前的HREM数据是在纳米尺度获得的。

项目成果

K.Hamasaki: "Ageing behaviour in a dental low gold alloy with high copper content" Journal of Materials Science:Materials in Medicine. 9(印刷中). (1998)

K.Hamasaki：“高铜含量牙科低金合金的老化行为”《材料科学杂志：医学材料》9（出版中）。

K. Hisatsune: "Site occuupation of platinum in CuAu-Pt alloys" Scripta Materialia. (in press). (1997)

K. Hisatsune：“CuAu-Pt 合金中铂的位点占据”Scripta Materialia。

A.M.E1 Araby: "Age-hardening characteristics of (AuCu)_<1-X>- Pt_X pseudobinary alloys" Materials Science & Engineering. A206. 290-301 (1996)

A.M.E1 Raby：“(AuCu)_<1-X>- Pt_X 伪二元合金的时效硬化特性”材料科学

Y.Tanaka: "Early stage of ordering in stoichiometric AuCu Alloy" Materials Transactions,JIM. 39. 87-94 (1998)

Y.Tanaka：“化学计量金铜合金订购的早期阶段”Materials Transactions，JIM。

K.Hisatsune: "Phase transformation in a dental gold alloy for soldering" Journal of Alloys & Compounds. 261. 308-312 (1997)

K.Hisatsune：“用于焊接的牙科金合金的相变”《合金杂志》