1. No category

3.4 포정점 (
) 을 갖는 2성분계
① * Peritectic -A three-phase reaction in which, upon cooling,
a liquid and a solid phase transform to give one different solid phase.
liquid + solid 1 → solid 2
* 포정반응 (peritectic reaction) : (비조화용융 반응)
냉각시 고상과 액상이 다른 단상의 고상으로
가열시 단상의 고상이 다른 고상과 액상으로
cooling
δ + L
⇄
heating
ε
( 2N․V + L
c
⇄ N․V,
c
3N․V + L ⇄ 2N․V,
h
h
c
N + L ⇄ 3N․V )
h
For equilibrium(very slow) cooling of alloy with peritectic composition through peritetic
temperature, all the solid phase α react with all the liquid to form a new solid phase β
- 28 -
② 미세구조개요
- 29 -
- 30 -
- 31 -
- 32 -
② 60 mol% NiO와 40 mol% V2O5인 융체를 냉각 시 이 계에서 등조성선 연구
Temp.
Property
(℃)
(Phase)
890
(
)mm melt
(
) mm (
%
(Phase)
(
) crystals
(
Analysis
% Composition
)
)
of Phase
V2O5
V2O5
(
)
NiO
(
)
V2O5
(
)
NiO
(
)
(
)
(
)mm melt
(
) mm (
(
)
(
)
800
) crystals
V2O5
(
)
NiO
(
)
V2O5
(
)
NiO
(
)
(
730+
(
)mm melt
) mm (
(
) crystals
(
)
)
V2O5
(
)
NiO
(
)
V2O5
(
)
(
NiO
(
)
(
(
25
(
) mm (
) mm (
) crystals
) crystals
(
(
)
)
V2O5
(
)
NiO
(
)
V2O5
(
)
NiO
(
)
(
(
)
60.0
(
)
(
)
60.0
)
(
)
(
)
)
60.0
)
(
)
(
)
)
40.0
- 33 -
(
)
40.0
(
)
)
40.0
(
(
)
40.0
(
NiO
60.0