비정질 합금의 결정화

소개글

비정질 합금의 결정화에 대한 보고서 자료입니다.

목차

1.Introduction

2.Experimental techniques

3.Nucleation

4.Crystallization mechanism
Polymorphous crystallization
Eutectic crystallization
Primary crystallization

5.Crystallization kinetics (J.M.A equation, activation energy)

6.Crystallization behavior and crystallized structure

7.Phase separation

8.Application of crystallized metallic glasses

본문내용

Crystallization
 :by annealing of metallic glasses
 :Most metallic glasses crystallize initially to one or more metastable phases.
 :A decrease in enthalpy, increase density and significant changes in most physical properties.
 It occurs by nucleation and growth process identical to that in liquids just below the melting point
 The loss of the many of the desirable properties on crystallization imposes a strict limit on the operating times at elevated temperatures
 Partial or fully crystallization of metallic glasses can be used
to produce novel and useful microstructures unobtainable by other means.

키워드

결정화,   crystallization,   비정질,   amorphous,   J.M.A equation,   metallic glass