Studies on the Design and Mechanism of Function Creation for Rare Earth Materials

稀土材料功能创造的设计与机理研究

• 批准号: 06403021
• 负责人: ADACHI Gin-ya
• 金额: $ 11.52万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06403021/
• 关键词: Rare Earth Complexes; Mutual Separation for Rate Earths; Permanent Magnets; Interstitial Metal Nitrides; Chemical Sensors; Environmental Monitoring; Hydrogen Storage Alloys; Functional Thin Films; 希土類相互分離; Sm_2Fe_<17>CxNy; 単磁区粒子; P型半導体; スカンジウム

New results and conclusions obtained through the systematic studied on the design and mechanism of function creation for rare earth materials are as follows :(1) The epoxy resin-bonded magnets produced from the Zn/Sm_2Fe_<17>N_X composite powders were found to possess high-performance permanent magnetic characteristics : (BH) max=-176kJm^<-3> and good resistivity for oxidation.(2) Lanthanide complexes, [LnL_2] Cl_3 (Ln=Eu, Tb ; L=bpy, phen) were incorporated into silica or ORMOSIL (organically modified silicates) and their optical properties were characterized by measurements of absorption, reflection, excitation and emission spectra, and life times. The resulting transparent ORMOSIL composites provided strong red and green emissions and, by optimization of the preparation conditions and the concentration of complexes, high relative emission intensity values against standard phosphors, used in practice, were attained to be-80% and-100% for the ORMOSIL : [Eu (phen) _2] Cl_3 and ORMOSIL : [Tb (bpy) _2] Cl_3, respectively. This demonstrates that they have great potentials for practical uses as one of new phosphors with good transparency and mechanical strength.

通过对稀土材料的设计和功能创造机理的系统研究，取得了以下新的成果和结论：(1)采用Zn/Sm_2Fe_<17>N_X复合粉末制备的环氧树脂粘结磁体具有以下特点：高性能永磁特性：(BH) max=-176kJm^<-3>和良好的抗氧化性。(2) 稀土配合物，[LnL_2] Cl_3 （Ln=Eu、Tb；L=bpy、phen）被掺入二氧化硅或 ORMOSIL（有机改性硅酸盐）中，并通过测量吸收、反射、激发和发射光谱以及寿命来表征其光学特性。由此产生的透明 ORMOSIL 复合材料提供了强烈的红色和绿色发射，并且通过优化制备条件和配合物浓度，相对于实际使用的标准荧光粉的高相对发射强度值分别达到了 80% 和 100%。分别为ORMOSIL：[Eu(phen)_2]Cl_3和ORMOSIL：[Tb(bpy)_2]Cl_3。这表明它们作为具有良好透明度和机械强度的新型荧光粉之一具有巨大的实际应用潜力。

项目成果

K.A.Gschneidner,Jr.編集 足立吟也: "Handbook on The Physics and Chemistry of Rare Earths Chemical Sansorsの章" North-Holland, (in Press)

由 K. A. Gschneidner, Jr. Ginya Adachi 编辑：“稀土化学 Sansors 的物理和化学手册”北荷兰，（正在印刷中）

Tetsuya Izumi: "vapor phase extraction and separation of rare earths from bastnaesite concentrate mediated by vapor complexes" Journal of Alloys and Compounds. 245. 10-14 (1996)

Tetsuya Izumi：“通过蒸气复合物介导从氟碳铈矿精矿中气相萃取和分离稀土”《合金与化合物杂志》。

Kuniaki Murase: "Mutual Separation of Mixed Praseodymium and Neodymium Oxides via Metal Halide Gaseous Complexes" Industrial Engineering Chemical Research. 34. 3963-3969 (1995)

Kuniaki Murase：“通过金属卤化物气态络合物相互分离混合镨和钕氧化物”工业工程化学研究。

Toshiyuki Masui: "Preparation and characterization of cerium oxide Ultrafine particles Dispersed in polymer thin Films" Journal of Alloys and Compounds. (印刷中).

Toshiyuki Masui：“分散在聚合物薄膜中的氧化铈超细颗粒的制备和表征”《合金与化合物杂志》（正在出版）。

K.Machida: "Plasma Carbonitriding Reaction Characteristics of Sm_2Fe_<17>" Chemistry of Materials. 6. 2103-2107 (1994)

K.Machida：“Sm_2Fe_<17> 的等离子碳氮共渗反应特性”材料化学。