文章信息/Info

Title:

Atomic diffusion in amorphous alloy melts

作者:

胡金亮¹; 2; 朱純傲¹; 耿永亮¹; 張博¹; ^2*

¹合肥工業大學材料科學與工程學院，²安徽省功能材料與器件重點實驗室，安徽 合肥 230009

Author(s):

HU Jinliang;  ZHU Chunao;  GENG Yongliang;  ZHANG Bo*

School of Material Science and Engineering of Hefei University of Technology, Anhui Hefei 230009

關鍵詞:

非晶合金熔體 擴散 滑動剪切技術

DOI:

10.7502/j.issn.1674-3962.2014.05.04

文獻標志碼:

A

摘要:

非晶合金熔體的擴散是描述非晶合金熔體動力學行為的重要參數，不同于一般的金屬熔體，非晶合金熔體的擴散行為往往具有自己獨特的性質，如表現出典型的慢擴散行為和復雜的溫度依賴關系等，但由于技術、理論上的原因，目前無論是國內還是國際上對擴散的研究都處于初步階段。本文主要介紹了擴散系數的幾種比較成熟的測量方法，其中包括最近本課題組在傳統長管法和切單元法的基礎上開發的滑動剪切技術，該技術能夠有效消除加熱階段的擴散，是測量擴散系數的有效方法。同時，基于前人的測量結果和理論模型，本文對非晶合金熔體的擴散研究進行了系統的總結和討論。

Abstract:

Abstract: Diffusion in amorphous alloy melts is an important kinetic parameter to describe the properties in melts. Different from the normal alloy melts, the diffusion behavior of amorphous alloy melts tend to have their own unique properties, such as presented a typical slow diffusivity and a complex temperature dependent. But the researches on atomic diffusion are still at a preliminary stage whether in domestic or international study due to technical and theoretical difficulties. This paper mainly introduced some measurement techniques of the diffusion coefficient, including our self-designed sliding cell method, which combined the merits of the traditional long capillary method and the shear cell method, and ruled out the undesired atomic diffuse occurs in heating process. It’s concerned as an effective way to measure the diffusion coefficients. In addition, based on the diffusion results and models of the amorphous alloy melts, the diffusion research in amorphous alloy melts were summarized and discussed.

Keywords: Amorphous alloy melts, Diffusion, Sliding cell method