닉켈基耐熱合金의 一種인 Inconel 700 合金에 있어서 γ` 析出相의 成長에 對하여 電子顯微鏡的方法으로 調査하였다. 試料를 各各 760℃, 840℃ 및 880℃에서 最高 256時間까지 時效熱處理하여 γ` 粒子의 크기를 測定하므로써 時效時間에 따른 粒子의 成長過程을 調査하였다. 그 結果 粒子의 平均 크기가 時效時間의 1/3 멱승에 比例하는 것을 보아 Lifshitz-Wagner의 擴散支配的機構 理論의 豫想과 一致되는 것을 알 수 있었다. 또한 粒子의 成長에 必要한 活性化에너지를 求하였던 바 60.9 ㎉/㏖ 이라는 값을 얻었다.

The kinetics of growth of the gamma prime precipitates in Inconel 700 alloy were studied by means of electron microscopy. The coarsening behavior of the gamma prime precipitates was determined as a function of aging time by measuring the particle sizes of samples aged at 760℃, 840℃ and 880℃, respectively. The aging kinetics was shown to be in good agreement with the predictions of the Lifshitz-Wagner theory of diffusion-controlled coarsening at all aging temperatures examined, since the mean particle size increased with the 1/3 power of the aging time. The value of the activation energy for the coarsening process was found from the experimental data to be 60.9 ㎉/㏖.