Cơ chế phát tán nguyên tử đánh dấu qua các bong bóng siêu vi trong hợp kim vô định hình co-b

• Ngôn ngữ: vie
• Ký hiệu phân loại: 620.14 Ceramic and allied materials
• Thông tin xuất bản: Tạp chí Khoa học, 2012
• Mô tả vật lý: 88-93
• Bộ sưu tập: Metadata
• ID: 630466

Tóm tắt

The B concentration dependence of microscopic bubbles in amorphous alloys (AMAs) CoxB100-x, with x = 90, 81.5 and 70, has been investigated using the statistical relaxation method. The simulation shows that vacancy bubbles (VBs) in the AMAs vary in a range of 1.2.10 exponent - 4 - 2.2.10 exponent -3 per atom depending on the concentration of B atoms. The number of VBs decreased with a decrease in B concentration. The diffusion coefficient of Co and B atoms is also determined and discussed via VBs. The calculated results of the diffusion coefficients are in good agreement with experimental data.