Study on Phase Transformations for New Materials and under Special Conditions

新材料及特殊条件下的相变研究

• 批准号: 09242104
• 负责人: NITTONO Osamu
• 金额: $ 61.63万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-09242104/
• 关键词: phase transformation; metastable phase; atomic scale; amorphous alloy; magnetic material; nanocrystalline material; artificial multilayer; nano-composite; 原子的尺度; アモルファス合金; 金属人工格子; 非晶質磁性材料; 原始的尺度; 準結晶; 非晶質磁性合金; クラスター; アトムプローブ; ナノ結晶磁性

The characteristics of phase transformations have been invsestigated for new materials such as amorphous alloys and zeolite clusters, and also under various specific circumstances. About 80% of initial project planes was done in successfully. The study was done for three subjects. Main results are as follows : (1) Experimental and theoretical appoaches for understanding of phase transformations under specific circumstances ; Dr.HONO studied initial stages of phase transformations in nano-composite types of soft magnetic materials in atomic scale, and demonstrtaed that some impurities such as copper and niobium play an important role for soft magnetic properties and proposed a new concept to fabricate new types of soft materials. Dr.TERASAKI examined crystal structures in various zeolites by a combination of X-ray diffraction and electron microscopy, and also demostrated a new concept to fabricate new types of materials by controlling micro-meso spacial structures. (2)Material propertie … More s in artificially fabricated materials such as multilayers and metastable phases ; Dr.MATSUI examined the magnetic properties of arificial multilayer films containing iron element, and proposed a new model to explain the phase stability of metastable fcc and bcc iron phases. Dr.NITTONO examined various metastable phases which are hard to be formed thermodymanically, and demostrated that various metastable phases and alloys are easily fabricated under plasma states by sputtering, and various types of phase transformations are applicable to the improvement of practical materials. (3)Analysis of non-crystal to crystal types of phase transformations in amorphous alooys and quaisi-crystals ; Dr.INO examined magnetic properties of amorphous alloys containing Sm element, and explained successfully the mechanism of magmetic transformation in terms of temperature. Dr.HIROTSU developped new types of analytical techniques for amorphous alloys by the combination of electron diffraction, radial distribution analysis and structursl simulation method, and applied to the analysis of microstructures in amorphous soft magnetic materials. Some of researchers also collaborated with each other to elucidate the mechanism of the initial stage of phase separation. A lot of new knowledges which are applicable and useful were also obtained from this study. Less

在各种特定情况下，已经针对新材料（例如无定形合金和沸石簇）进行了相变的特征。大约80％的初始项目飞机成功完成了。该研究是针对三个受试者完成的。主要结果如下：（1）在特定情况下理解相变的实验和理论刺激性； Hono博士研究了原子量表的纳米复合材料类型的软磁性材料类型的相变的初始阶段，并证明某些杂质（例如铜和niobium）对软磁性特性起着重要作用，并提出了一个新概念来制造新型的软材料。 Terasaki博士通过X射线衍射和电子显微镜的组合检查了各种沸石中的晶体结构，还展示了一种新的概念，可以通过控制微粘膜空间结构来制造新型材料。 （2）材料特性……在人工制造的材料（例如多层和亚稳态阶段）中更多； Matsui博士研究了包含铁元素的弧层多层膜的磁性，并提出了一种新模型来解释亚稳态FCC和BCC铁相的相稳定性。 Nittono博士检查了各种亚稳态，这些相很难在热门人体上形成，并证明各种亚稳态相和合金可以通过溅射在血浆状态下易于制造，并且各种类型的相变适合改进实践材料。 （3）分析无定形唱片和Quaisi-Crystals中相变的晶体类型的分析；博士检查了含有SM元素的无定形合金的磁性特性，并成功地解释了岩浆转化的机理。 Hirotsu博士通过电子衍射，径向分布分析和结构结构仿真方法的组合开发了针对非晶合金的新型分析技术，并应用于无定形软磁性材料中微观结构的分析。一些研究人员还相互合作，以阐明相分离初始阶段的机制。从这项研究中也获得了许多适用和有用的新知识。较少的

项目成果

A.G.Roy, O.Nittono: "Pelation between phase separation and properties of Al-N-Co and Al-N-Co/Al-Co films"Proc.Intl.Conf.Solid State Phase Transformation. 1313-1316 (1999)

A.G.Roy、O.Nittano：“Al-N-Co 和 Al-N-Co/Al-Co 薄膜的相分离与性能之间的关系”Proc.Intl.Conf.Solid State Phase Transformation。

H.Kai, T.Ohkubo, Y.Nakata, Y.HIROTSU, A.Makino: "Nanostructure analysis of amorphous Fe-Zr-B(-Cu) alloys in the early state of crystallization"Proc.Intl.Conf.Solid State Transformation. 1223-1226 (1999)

H.Kai、T.Ohkubo、Y.Nakata、Y.HIROTSU、A.Makino：“结晶早期状态下非晶 Fe-Zr-B(-Cu) 合金的纳米结构分析”Proc.Intl.Conf.Solid State

O.NITTONO, M.Azumi, Y.Hashiba, M.Wakamori: "Common features of phase changes in metastable transition metal carbides such as Fe-C, Ni-C and Co-C prepared by reactive sputtering"Proc.Intl.Conf.Solid State Phase Transformation. 1309-1312 (1999)

O.NITTONO、M.Azumi、Y.Hashiba、M.Wakamori：“反应溅射制备的 Fe-C、Ni-C 和 Co-C 等亚稳态过渡金属碳化物相变的共同特征”Proc.Intl.Conf

K.Hono, Y.Zhang, A.Inoue, T.Sakurai: "APFIM studies on nanocrystallization of amorphous alloys" Mater. Sci. Eng.A226/228. 498-502 (1997)

K.Hono、Y.Zhang、A.Inoue、T.Sakurai：“非晶合金纳米晶化的 APFIM 研究”。

H.Ino, K.Tokumitsu: "Atomic and magnetic structures of Fe-Cu alloys prepared by mechanical alloying technique"Proc.Intl.Conf.Solid State Phase Transformation. 1255-1258 (1999)

H.Ino，K.Tokumitsu：“通过机械合金化技术制备的 Fe-Cu 合金的原子和磁结构”Proc.Intl.Conf.Solid State Phase Transformation。