陶瓷粒子与金属凝固界面的相互作用

吴树森; 中江秀雄

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陶瓷粒子与金属凝固界面的相互作用
Interaction of Ceramic Particles with Solidifying Metal Front
1998年第3期
纸质出版日期： 1998 ，
DOI：

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[1]吴树森,中江秀雄.陶瓷粒子与金属凝固界面的相互作用[J].特种铸造及有色合金,1998(03):36-38.

Wu Shusen. Interaction of Ceramic Particles with Solidifying Metal Front[J]. Special Casting & Nonferrous Alloys, 1998,(3).
[1]吴树森,中江秀雄.陶瓷粒子与金属凝固界面的相互作用[J].特种铸造及有色合金,1998(03):36-38. DOI：

Wu Shusen. Interaction of Ceramic Particles with Solidifying Metal Front[J]. Special Casting & Nonferrous Alloys, 1998,(3). DOI：

摘要

提出了一种粒子与凝固界面的相互作用模型。当陶瓷粒子与固液界面的接触角小于９０°时，粒子将被生长的固相界面所捕捉。反之，将被排斥。接触角小于９０°的条件是使粒子与固相的界面能小于粒子与液相的界面能。利用区域熔化定向凝固的方法，用Ａｌ－Ｓｉ／Ａｌ２Ｏ３系复合材料进行实验，验证这一模型。

Abstract

An interaction model is proposed for a particle with a solid/liquid interface. When the contact angle between a ceramic particle and solid/liquid interface is less than 90°

the particle will be entrapped by growing solid interface. Otherwise

it is rejected. The necessary condition for making the contact anlge less than 90° is to make the interfacial energy of a particle with a solid smaller than that of the particle with the liquid. The interaction model has been verified using the zone melting UDS method with the AlSi/Al2O3 composites.