Development of Machinable Glass Ceramics Containing Rare Earth Oxides

含稀土氧化物的可加工微晶玻璃的研制

• 批准号: 05555182
• 负责人: MAKISHIMA Akio
• 金额: $ 6.14万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555182/
• 关键词: GLASS CERAMICS; MACHINABILTY; MACHINABLE; RARE EARTH OXIDE; Y203; OXYAPPATITE; ALUMINOSILICATE GLASSS; LATHE; 旋盤; 機械加工性; 快切削性; 希土類アルミノシリケート; 表面粗さ; マシナブルセラミックス; イットリア; マシナブルガラス; 希土類; 結晶成長

Machinable glass Ceramics, which can be cut, ground drilled and milled by equipment used for machining and fast -machining of metals, are being used as heat-resistant materials, electrical insulation, chemically durable materials etc. Usually, machinable glass-ceramics contain mica, which has high cleavability, obtained by precipitating mica in glass, by sintering etc. Unfortunately, this intrinsic property of mica also imparts reduced hardness and elastic modulus compared to ordinary glasses. Rare-metal oxide containing aluminosilicate glass ceramics were found to be good machinability by the authors. It is purposes of the present study to improve the machinabilty of the glass Ceramics of higher hardness and elastic modulus and higher electrical insulation because of nonalkaline composition. Several series of Y203-containing aluminosilicate glasses were prepapared by an ordinary melting method, and their physical properties, such as Vickers hardness, surface roughness and so forth. Crystalization behaviors were at the same time studied for the samples substituted for alakaline earth oxide or kinds of rearth earth oxides in theses glasses. Sol-gel process were adopted to make the machinable glass cermics of these kinds. Crystallized samples were successfullly lathed and their surface roughness was examined. Higher amounts of alkaline earth oxide introduction leads to some correlatation to the surface roughness and harness and/or volume fraction of cryatallization.

可加工玻璃陶瓷，可通过用于机械加工和快速机械加工金属的设备进行切割、研磨、钻孔和铣削，被用作耐热材料、电绝缘材料、化学耐用材料等。通常，可加工玻璃陶瓷含有云母，其具有高可劈裂性，通过在玻璃中沉淀云母、烧结等获得。不幸的是，与普通玻璃相比，云母的这种固有性质还降低了硬度和弹性模量。作者发现含稀有金属氧化物的铝硅酸盐玻璃陶瓷具有良好的可加工性。本研究的目的是提高非碱性玻璃陶瓷的可加工性，使其具有更高的硬度和弹性模量以及更高的电绝缘性。用普通熔融法制备了几种系列含Y2 O3的铝硅酸盐玻璃，并对其维氏硬度、表面粗糙度等物理性能进行了测试。同时研究了用碱土金属氧化物和稀土金属氧化物替代玻璃的析晶行为。采用溶胶-凝胶法制备了这类可加工玻璃陶瓷。对结晶后的试样进行了车削加工，并对表面粗糙度进行了检测。较高量的碱土金属氧化物引入导致表面粗糙度和硬度和/或结晶体积分数的一些降低。

项目成果

Akio Makishima 他: "Surface Roughness of Yttria-Containing Aluminosilicate Glass-Ceramics as Indicative of Their Machinability" Journal of American Ceramic Society. 76. 1861-1864 (1993)

Akio Makishima 等人：“含氧化钇的铝硅酸盐玻璃陶瓷的表面粗糙度作为其可加工性的指标”美国陶瓷学会杂志 76。1861-1864 (1993)

Akio Makishima: "Machinable Glass Ceramics" Nippon Sheet Glass Co.Ltd.Catalog. (1995)

Akio Makishima：“可加工玻璃陶瓷”日本板硝子株式会社目录。

M.fukuoka, A.Makishima 他: "Effect of Precuriers or the Structure of SiO_2-Al_2O_3Sols and Gels by the Sol-Gel Process" J.Sol-Gel Science and Technology. 1・1. 85-92 (1993)

M.fukuoka、A.Makishima 等：“溶胶-凝胶过程中前体或 SiO_2-Al_2O_3 溶胶和凝胶结构的影响”J.Sol-Gel Science and Technology 1・1 (1993)。

牧島 亮男: "マシニブル結晶化ガラス" 日本技硝子社,商品カタログ. 1-2 (1995)

Akio Makishima：“Machinebble 结晶玻璃”Nippon Gi Glass Co., Ltd.，产品目录 1-2 (1995)。

Morinao Fukuoka, Yoshito Onoda, satoru Inoue、Kenji Wada、Akihiko Nukui and Akio Makishima: ""Effects of Precursers on the Structure of SiO2-Al203 Sols and Gels by the Sol-Gel Process"" J.Sol Gel Science and Technology. 1 (1). 85-92 (1993)

Morinao Fukuoka、Yoshito Onoda、satoru Inoue、Kenji Wada、Akihiko Nukui 和 Akio Makishima：“前体对溶胶-凝胶过程中 SiO2-Al2O3 溶胶和凝胶结构的影响”J.Sol Gel Science and Technology。 (1). 85-92 (1993)。