用剩余强度法测定了Fe~(55)及Co~(60)在铁-钴(50％)合金中850--980℃α-区域内的自扩散系数,结果分别为 D_(Fe)=0.26 exp(—55,600/RT)厘米~2/秒, D_(Co)=14 exp(—65,000/RT)厘米~2/秒。 激活能测定数值与用准化学理论分析结果符合较好。
The self-diffusion coefficients of Fe~(55) and Co(60) in iron-50％ cobalt alloy in thetemperature range of 850-980℃ (α-region) have been measured by means of the"residual activity" method. The results are as follows: D_(Fe)= 0.26 exp(-55,600/RT) cm~2/sec, D_(Co)=14 exp(-65,000/RT) cm~2/sec. From quasi-chemical approach an approximate relationship between the activationenergies of self-diffusion in concentrated homogeneous solid solutions and those of self-diffusion and impurity diffusion in one of the components is derived as 7Q_(Fe)-3Q_(Co)=5Q_(Co)~0-Q_(Fe)~0. This relationship is found to be applicable in the Fe-50％ Co alloy (α-region).
参考文献
| [1] | |
| [2] | |
| [3] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%