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(yè)大學(xué)材料科學(xué)與工程學(xué)院，²安徽省功能材料與器件重點(diǎn)實(shí)驗(yàn)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(guān)鍵詞:

非晶合金熔體 擴(kuò)散 滑動(dòng)剪切技術(shù)

DOI:

10.7502/j.issn.1674-3962.2014.05.04

文獻(xiàn)標(biāo)志碼:

A

摘要:

非晶合金熔體的擴(kuò)散是描述非晶合金熔體動(dòng)力學(xué)行為的重要參數(shù)，不同于一般的金屬熔體，非晶合金熔體的擴(kuò)散行為往往具有自己獨(dú)特的性質(zhì)，如表現(xiàn)出典型的慢擴(kuò)散行為和復(fù)雜的溫度依賴關(guān)系等，但由于技術(shù)、理論上的原因，目前無論是國(guó)內(nèi)還是國(guó)際上對(duì)擴(kuò)散的研究都處于初步階段。本文主要介紹了擴(kuò)散系數(shù)的幾種比較成熟的測(cè)量方法，其中包括最近本課題組在傳統(tǒng)長(zhǎng)管法和切單元法的基礎(chǔ)上開發(fā)的滑動(dòng)剪切技術(shù)，該技術(shù)能夠有效消除加熱階段的擴(kuò)散，是測(cè)量擴(kuò)散系數(shù)的有效方法。同時(shí)，基于前人的測(cè)量結(jié)果和理論模型，本文對(duì)非晶合金熔體的擴(kuò)散研究進(jìn)行了系統(tǒng)的總結(jié)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