采用机械合金化法制备Al V Fe纳米粉末 ,通过测定M ssbauer效应 ,研究了不同球磨能量对制备Al V Fe纳米粉末的影响·结果表明 ,振动球磨与高能球磨所制备的Al V Fe纳米粉末结构均由非晶和α Al纳米晶组成 ,其非晶含量随着球磨能量...采用机械合金化法制备Al V Fe纳米粉末 ,通过测定M ssbauer效应 ,研究了不同球磨能量对制备Al V Fe纳米粉末的影响·结果表明 ,振动球磨与高能球磨所制备的Al V Fe纳米粉末结构均由非晶和α Al纳米晶组成 ,其非晶含量随着球磨能量的增加而有所不同·展开更多
用DSC技术和M ssbauer谱研究了颗粒弥散的快凝Al Fe V Si Nd合金薄带中纳米相的转变和相变动力学·结果表明 :快凝Al Fe V Si Nd纳米合金在加热过程中亚稳的Al8Fe4Nd相向α Al13 (Fe ,V) 3 Si相转变 ,并用Avrami公式计算了Al8Fe4Nd...用DSC技术和M ssbauer谱研究了颗粒弥散的快凝Al Fe V Si Nd合金薄带中纳米相的转变和相变动力学·结果表明 :快凝Al Fe V Si Nd纳米合金在加热过程中亚稳的Al8Fe4Nd相向α Al13 (Fe ,V) 3 Si相转变 ,并用Avrami公式计算了Al8Fe4Nd相的分解激活能Eα 为 1 61± 0 1 2eV·研究表明亚稳相Al8Fe4Nd向α Al13 (Fe,V) 3 Si相转变的过程是由原子体扩散和原位扩散共同控制的·展开更多
Ⅰ. INTRODUCTION In recent years several double rare-earth oxide solid solutions have been synthesized and their physical properties have been determined. These studies are important for developing the rare-earth soli...Ⅰ. INTRODUCTION In recent years several double rare-earth oxide solid solutions have been synthesized and their physical properties have been determined. These studies are important for developing the rare-earth solid state physics science.展开更多
文摘用DSC技术和M ssbauer谱研究了颗粒弥散的快凝Al Fe V Si Nd合金薄带中纳米相的转变和相变动力学·结果表明 :快凝Al Fe V Si Nd纳米合金在加热过程中亚稳的Al8Fe4Nd相向α Al13 (Fe ,V) 3 Si相转变 ,并用Avrami公式计算了Al8Fe4Nd相的分解激活能Eα 为 1 61± 0 1 2eV·研究表明亚稳相Al8Fe4Nd向α Al13 (Fe,V) 3 Si相转变的过程是由原子体扩散和原位扩散共同控制的·
基金Project supported by the National Natural Science Foundation of China
文摘Ⅰ. INTRODUCTION In recent years several double rare-earth oxide solid solutions have been synthesized and their physical properties have been determined. These studies are important for developing the rare-earth solid state physics science.
