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首页> 外文期刊>Journal of Crystal Growth >Direct nitridation of molten Al(Mg,Si) alloy to AlN
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Direct nitridation of molten Al(Mg,Si) alloy to AlN

机译:熔融Al(Mg,Si)合金直接氮化成AlN

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摘要

The growth of AIN rod-like crystals, successfully produced via direct nitridation of Al-alloy doped with 5 wt% Mg and 2 wt% Si at 1273 K is predominantly based on capillary niass-transfer phenomena, which occur through a network of micro-channels developed in the empty space among the AIN columnar crystals as well as the hollows inside these crystals. The diffusion of N-2 in the liquid alloy is the rate-determining step of the process. Mg and Mg3N, resulting after nitridation maintain a very low partial pressure of oxygen during the entire process and favour the formation of AIN. (c) 2005 Elsevier B.V. All rights reserved.
机译:AIN棒状晶体的生长是通过在1273 K处对掺有5 wt%Mg和2 wt%Si的铝合金进行直接氮化而成功产生的,这主要是基于毛细管的镍传输现象,这种现象是通过微网络形成的。在AIN柱状晶体之间的空隙以及这些晶体内部的空洞中形成了通道。 N-2在液态合金中的扩散是该过程的决定速率的步骤。氮化后生成的Mg和Mg3N在整个过程中保持非常低的氧分压,有利于AIN的形成。 (c)2005 Elsevier B.V.保留所有权利。

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