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전착된 Fe-52%Ni 합금의 결정립 성장과 경도 특성 연구
이민수(Minsu Lee),한윤호(Yoonho Han),엄호경(Hokyung Um),박종수(Jonsoo Park),이인섭(Insup lee),안진호(Jinho Ahn),임태홍(Tai Hong Yim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
Nanocrystalline Fe-52wt%Ni alloy for a metal substrate of flexible solar cell was fabricated by electroforming. For metal substrate of flexible solar cell, it is required the behavior of thermal expansion which is closed to that of semiconductor layer and outstanding mechanical characteristic. Heat treatment temperature was varied to study the influence of grain size on hardness. From this, we intended to optimize the mechanical properties. Nanocrystalline Fe-Ni alloy was analyzed through XRD and grain size was calculated by Scherrer equation. The grain size of alloys after heat treatment at 400℃, 600℃ and 800℃ was measured by SEM and optical microscope. The grain size of electrodeposited Fe-52wt% Ni alloy was increased from 10㎚ to 5㎛ according to hear treatment. The hardness and grain size relationship in heated microcrystalline Fe-52wt%Ni alloy corresponds to Hall-petch equation.