Formation of Non-Solid Soluble Type Cu-Based Amorphous Alloy and Its High Functional Properties by Nanocrystallization

Cu-Ag-Ln合金系统，其中包括90%以上的非固体溶解性元素是变形的。“非典型结构，纳米晶体化后的结构变化和长期非典型合金的热稳定性已被研究。”在Cu-Ag-La系统中，淀粉结构在浓度范围为20- 70%的Ag和3- 10%的La中出现，在Cu-Ag-Ce系统中含有30- 55%的Ag和3- 8%的Ce中出现。这些淀粉结构显示在高水晶化温度（400- 500 K）和维克斯硬度的高价值。张力强度和年轻人的模块分别为300、750兆帕和120兆帕，特别地，在铜基合金的光谱中，特殊的电子抵抗力较高，为0.75-0.90 mu·欧米茄·m，而紧张的增益因子则为2.4，并反映压力的敏感性较高。对晶体化过程进行了测试，其含义是X射线或电子干扰和传输电子显微镜。在第一阶段，反应仍在继续，Am * Am + fcc Cu（Ag） + fcc Ag（Cu）* Cu + Ag +未知元件被观察，纳米级尺度为fcc相位预处理的精细晶体，使机械性能达到950 MPa的张力强度的最大值。从水晶增长率中获得的激活能量估计为130- 160千焦/摩尔。Furthermore，通过对这些物理特性的分析，将从合金组合或热治疗的视点设计更好的特性的影响，并将测试应用于传感器或执行器材料的可能性。它是在预测试中确认的，即基于铜的非极性合金显示出氧化行为的微型特性，该领域的研究也将扩大。

Cu-Ag-Ln alloy system which includes above 90at% of non-solid soluble elements was amorphized. The amorphous structure, the structural change after nanocrystallized and the thermal stabiliy of ternary amorphous alloys were studied. The amorphous structure was obtained in the concentration range at 20-70 at% of Ag and 3-10 at% La in the Cu-Ag-La system, and 30-55 at% of Ag and 3-8 at% of Ce in the Cu-Ag-Ce system.It was shown in these amorphous alloys that the high crystallization temperature as 400-500K and high values of Vickers hardness, tensile strength and Young's modulus as 300,750Mpa and 120Gpa, respectively.Especially, in spite of Cu-based alloys, specific electrical resistivity is high as 0.75-0.90 mu・OMEGA・m, and the strain gauge factor was high as 2.4, reflecting higher sensitivity for stress. The crystallization process was examined by means of X-ray or electron diffraction and transmission electron microscope.In the first stage, following reaction,Am * Am + fcc Cu(Ag) + fcc Ag(Cu)* Cu + Ag + unknown Compondwas observed, and the nano order scale fine crystallite of fcc phase precipitates primarily, accompanying betterment of mechanical property as maximum value of tensile strength of 950Mpa. The activation energy obtained from the rate of the crystal growth was estimated as 130-160kJ/mol. Furthermore, by analyzing of these physical property, the imporovement of more excellent characteristics will be designed from the view point of alloy composition or heat treatment, and be tested the possibility of application to the sensor or actuator materials.As it was confirmed in the preexamination that Cu based amorphous alloys showed the peculiar property for oxidation behavior, the investigation of this field will also be spread.