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The Basic research on denture of metal plate manufacture using powder metallurgy

粉末冶金金属板制造义齿的基础研究

基本信息

批准号：
14370649
负责人：
TANAKA Yoshinobu
金额：
$ 8.77万
依托单位：
Aichi-Gakuin University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14370649/
关键词：
Powder metallurgy Doctor blade Ti sheet Porous material Spherical powder Sintering

项目摘要

PurposePowder metallurgy is a metal processing technology. The porous titanium produced from powder is widely used. It is applied to titanium, which is not easy to cast as it sinters under melting point. When it was used in prosthetic dentistry, application to high fusing metal that is biocompatible becomes possible. Then, the examination of mechanical characters of the Ti sheet produced by sintering was carried out and the application to dental prosthesis manufacture were discussed.MethodTi sheets of 1mm thickness which were added the binder to the spherical Ti powder was produced with the doctor blade method. The sintering was carried out between 900〜1150℃ at 6 kinds of temperatures. The sintered compact was evaluated by dimensional change rate, hardness test, bending strength, tensile strength and SEM observation. Another compact was sintered on the refractory cast.Results and ConclusionMechanical strengths significantly increased with the sintering temperature. In addition, excellent mechanical strengths was acquired by adding crushed powder and de-binder process. And, in the sintering on the refractory cast, pre-baking over 100 minutes and sintering over 1050℃ was needed for practical application. It seemed possible to apply the sintered titanium to dental prosthesis. However, it will be necessary to examine the control of the shrinkage of the sintered compact in the future too.

粉末冶金是一种金属加工技术。以粉末为原料制备的多孔钛应用广泛。它适用于钛，这是不容易铸造，因为它在熔点以下烧结。当它用于牙科修复时，应用于生物相容性高的熔融金属成为可能。方法在球形钛粉中加入粘结剂，采用刮刀法制备厚度为1 mm的钛片。烧结温度为900 ~ 1150℃，烧结温度为6种。通过尺寸变化率、硬度测试、抗弯强度、抗拉强度和SEM观察对烧结体进行了评价。另一个紧密烧结的耐火cast.Results和ConclusionMechanical强度显着增加与烧结温度。此外，通过加入粉碎粉末和脱脂工艺，获得了优异的机械强度。在耐火浇注料上进行烧结时，预焙时间应在100 min以上，烧结温度应在1050℃以上。烧结钛在口腔修复中的应用是可能的。然而，将来也有必要研究烧结体收缩的控制。