TiC及Ti2C在铝结晶过程中的核心作用^①

来源期刊：中国有色金属学报1996年第1期

论文作者：王昶明 冯庆玲

文章页码：130 - 135

关键词：碳化钛； 晶核； 亚包晶； 铝

Key words：crystallization； aluminium ； TiC

摘    要：将工业纯铝(99.7%)用亚包晶成分的Ti(＜0.15%)实行变质处理，采用电子衍射等方法研究其结晶核心，证明α-Al核心除丁TiC。TiC为立方晶格，粒子外，还存在Ti₂C。TiC为立方晶体，a =0.4380nm；Ti₂C为正交晶格，a=1.20nm，b=1.06nm，c=1.5.nm。

Abstract: The crystallization center in commercially pure aluminium ( 99.7%)castings inoculated with hy-poperitectic titanium(<0. 15%) was nvestigated by electron diffraction. It has been found that the particles were composed of stoichiometric TiC, having cubic lattice with a=0. 438 0 nm，and Ti₂C, having orthorhombic lattice with a=1. 20 nm，b =1.06 nm and c = 0. 50 nm.