High Temerature Plasticity of Metal/Ceramic Interface Free of Reaction Product Layer and Enhanced by Nonstoichiometry

非化学计量增强无反应产物层金属/陶瓷界面的高温塑性

• 批准号: 02452242
• 负责人: ISHIDA Yoichi
• 金额: $ 4.74万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-02452242/
• 关键词: Metal; Ceramic Joining; Reaction Product Free Interface; Nonequilibrium Composition; High Temperature Plasticity; Stress Relaxation; Interface Structure; Superconductivity; High Resolution Electron Microscopy; 銀・ビスマス系超伝導体接合; 金属・セラミックス接合界面構造; 高分

This year the research of plasticity at metal/ceramic joined interfaces has been concentrated with following three systems where the interfere is free of the reaction product layer.(1) Ni/Si_3N_4 systemUsing a high temperature goniometer stage mounted in a high resolution electron microscope, thermal stress induced deformation near the Ni/Si_3N_4 reaction product free interface has been observed "in situ" by changing the specimen foil temperature. The motion of interface dislocation has been observed, but the major mechanism of thermal stress relaxation has been the motion of the lattice dislocation in nickel grain. The interface acted as the site of dislocation absorption rather than emission. Chemical analysis of the fractured interface indicated the segregation of sintering additives at the interface between nickel base superalloy and Si_3N_4. (2) Bi_2Sr_2Ca_2Cu_3Ox/Ag/Bi_2Sr_2Ca_2Cu_3Ox systemIn order to use Bi-superconducting oxide as a Josephson device, silver thin layer is useful. The AC V-I characteristics indicated the performance of the [001] twist bicrystal is good at certain misorientation where the interface structure is ordered. (3) C_<60>/graphite systemCarbon 60 is face centered cubic at ambient temperatures and the plastic deformation is like that of metals. The C_<60> molecules were produced either by vacuum deposition or pulled up by LB method to mount C_<60> on the basal plane of graphite. The observation by STM showed that the interface is not like that of Ag/Bi_2Sr_2Ca_2Cu_3Ox where the allignment of monolayer silver atoms parallel to the a axis of the superconducting oxide was pronounced.

近年来对金属/陶瓷界面塑性的研究主要集中在以下三种不受反应生成物层干扰的体系。(1) Ni/Si_3N_4体系采用安装在高分辨率电子显微镜上的高温测角台，通过改变试样箔温度，在Ni/Si_3N_4反应产物自由界面附近“原位”观察到热应力引起的变形。观察到界面位错的运动，但热应力松弛的主要机制是镍晶粒中晶格位错的运动。界面作为位错吸收而不是发射的位置。对断裂界面的化学分析表明，烧结添加剂在镍基高温合金与Si_3N_4界面处偏析。(2) Bi_2Sr_2Ca_2Cu_3Ox/Ag/Bi_2Sr_2Ca_2Cu_3Ox体系为了使用双超导氧化物作为Josephson器件，银薄层是有用的。AC V-I特性表明，[001]扭转双晶在界面结构有序的情况下具有良好的定向性能。(3) C_<60>/石墨体系c60在常温下呈面心立方状，塑性变形与金属相似。采用真空沉积法制备C_<60>分子，或采用LB法将C_<60>贴装在石墨基面上。STM观察表明，该界面不像Ag/Bi_2Sr_2Ca_2Cu_3Ox的界面，其中银原子平行于超导氧化物的a轴排列。

项目成果

Y.Ishida,J.Wang and T.Suga: "Designing of Structural Defects to Relieve Thermal Stress" Acta Metallurgica et Materialia. 4. S289-293 (1992)

Y.Ishida、J.Wang 和 T.Suga：“设计结构缺陷以缓解热应力”Acta Metallurgica et Materialia。

Y.Ishida,J.Maqszak,T.Kizuka,&H.Ichinose: "Stracture and Properties of a Bi_2Sr_2Ca_2Cu_3OxーAg Nanocomposite" Physica C. 190. 67-69 (1991)

Y. Ishida、J. Maqszak、T. Kizuka 和 H. Ichinose：“Bi_2Sr_2Ca_2Cu_3OxーAg 纳米复合材料的结构和性能” Physica C. 190. 67-69 (1991)

石田 洋一(分担執筆): "表面・界面の超精密創成評価技術" 日本学術振光会・結晶加工と評価技術第145委員会, 422 (1991)

石田洋一（撰稿人）：“表面和界面的超精密创建和评估技术”日本科学评论学会，第 145 届晶体加工和评估技术委员会，422（1991）

N.Tomita,Y.Takahashi,M.Mori and Y.Ishida: "The Superconducting Properties of [001] Twist Boundaries in a Bi-Sr-Ca-Cu-0 Superconductor" Japanese J.Appl.Phys.B. 31. L942-945 (1992)

N.Tomita、Y.Takahashi、M.Mori 和 Y.Ishida：“Bi-Sr-Ca-Cu-0 超导体中 [001] 扭曲边界的超导特性”日本 J.Appl.Phys.B。

Y.Ishida,T.Kizuka,J.Matuzaki and H.Ichinose: "High Resolution electron Microscopy of Interfaces in nano-Materials (in Japanese)" Electron Microscopy. 27. 68-75 (1992)

Y.Ishida、T.Kizuka、J.Matuzaki 和 H.Ich​​inose：“纳米材料界面的高分辨率电子显微镜（日语）”电子显微镜。