Preparation of Composite Ceramic Powder by the Constant Composition Method

恒定组成法制备复合陶瓷粉体

• 批准号: 62850140
• 负责人: KANAZAWA Takafumi
• 金额: $ 3.78万
• 依托单位: Tokyo Metropolitan University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62850140/
• 关键词: Hydroxyanatite; Crystal Growth; pH-stat; Zirconia; CaF_2; pHスタット

The crystal growth of hydroxyapatite on seed crystals of various ceramic powder was controlled by the constant composition method, which was developed by G.H. Nancollas for the purpose of measurement for growth rates of sparingly soluble calcium phosphate crystals. For the purpose of preparation of calcium-phosphate-and ceramic composite powder, calcium salts such as calcium fluoride, calcite and brushite were used for seed crystals while apatites were crystallized on zerconia and alumina. Under the conditions of high oversaturation to hydroxyapatite, octacalcium phosphate formed in crystallized apatites on zircoia. Fluorine-bearing apatites were obtained on calcium fluoride and fluorine-containg zirconia prepared by immersion of KF solution. The presence of fluorine may restrain contamination of octacalcium phosphate on crystallization of apaties. No apatite was obtained on brushite or calcite.

采用G.H.等人提出的恒组分法控制羟基磷灰石在各种陶瓷粉末晶种上的晶体生长。微溶磷酸钙晶体生长速率测量用纳米玻璃。以氟化钙、方解石、透钙磷石等钙盐为晶种，磷灰石为晶种，氧化锆、氧化铝为载体，制备钙-磷酸盐-陶瓷复合粉体。在对羟基磷灰石高度过饱和的条件下，磷灰石结晶体中形成磷酸八钙。用KF溶液浸渍法制备了氟化钙和含氟氧化锆，并在其上合成了含氟磷灰石。氟的存在可抑制磷酸八钙对磷灰石结晶的污染。在透钙磷石或方解石上没有得到磷灰石。

项目成果

金沢孝文 編: "Inorganic Phosphate Materials" Kodansha-Elsevier, 0-289 (1989)

金泽隆文主编：《无机磷酸盐材料》讲谈社-爱思唯尔，0-289 (1989)

T.Umegaki;el al.: "Effect of Supporting Wlectrolytes on Crystal Growth of Hydroxyapatite ( tentative )" Bulltin of Chenicul Society of Tayan.

T.Umegaki 等人：“支持电解质对羟基磷灰石晶体生长的影响（暂定）”Tayan Chenicul Society 公告。

梅垣高士: 日本セラミックス協会学術論文誌.

Takashi Umegaki：日本陶瓷学会学术期刊。

梅垣高士 他: 日本セラミックス協会学術論文誌.

Takashi Umegaki 等：日本陶瓷学会学术期刊。

T.Umegaki;el al.: "Formation of Apatite on Zirconia Powder (tentative)" Seramikkusu Ronbunshi.

T.Umegaki；等人：“氧化锆粉末上磷灰石的形成（暂定）”Seramikkusu Ronbunshi。