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전기저항 측정에 의한 Au-10at%Co 합금의 시효석출 현상에 관한 연구
이동환,구본흔,이찬규 國立 昌原大學校 産業技術硏究所 1995 産技硏論文集 Vol.9 No.-
The precipitation of cobalt-rich particles in Au-10at%Co alloys has been studied by electrical resistivity measurements. The kinetics of precipitation could be well described by Johnson-Mehl-Avrami equation, f(t)=1-exp(-kt??) and the values of n were found to be in the range 0.42∼0.88, 1.22∼2.38 and 0.48~0.65. The activation energy of aging Au-10at%Co alloys was determined by cross-cut method: the value varies between 51.7 and 68.4kJ/mol and is similar to the energy of motion of either a vacancy or vacuncy-solute complex through the lattice.