CALCULATION OF THE VACANCY VOLUME OF METALS BY MODIFIED BROOKS' MODEL

金属学报(英文版), 2004, 17(6): 888-893.

^1, , ^2, , ^3, , ^4,

1.School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China;School of Materials Science and Engineering, Central South University, Changsha 410083, China

2.School of Materials Science and Engineering, Central South University, Changsha 410083, China

3.Department of Applied Physics, Hunan University, Changsha 410082, China

4.Department of Applied Physics, Hunan University, Changsha 410082, China

基金项目: 国家自然科学基金(50401010)

CALCULATION OF THE VACANCY VOLUME OF METALS BY MODIFIED BROOKS' MODEL

Keywords： vacancy volume

To modify the shape difference between the spherical vacancy and the realistic vacancy, a shape factor is introduced into Brooks' vacancy model. It is shown that the modified model is more efficient in predicting the vacancy volume of metals than the original one, and the calculated vacancy volumes of 17 metals by the modified model agree with the values reported in literatures. Furthermore, the present results show that the vacancy shape may contribute 2%-9% to the whole vacancy volume.

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CALCULATION OF THE VACANCY VOLUME OF METALS BY MODIFIED BROOKS' MODEL

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