文章編號：(1996)01-130-6
TiC及Ti2C在鋁結晶過程中的核心作用①
王昶明1，馮慶玲2
(1.北京輕工業(yè)學院機械系，北京100037；
2.濟華大學材料系，北京100084)
摘 要: 將工業(yè)純鋁(99.7%)用亞包晶成分的Ti(＜0.15%)實行變質處理，采用電子衍射等方法研究其結晶核心，證明α-Al核心除丁TiC。TiC為立方晶格，粒子外，還存在Ti2C。TiC為立方晶體，a =0.4380nm；Ti2C為正交晶格，a=1.20nm，b=1.06nm，c=1.5.nm。
關鍵字: 碳化鈦 晶核 亞包晶 鋁
NUCLEATION OF ALUMINIUM ON TiC AND Ti2C IN THE CRYSTALLIZATION PROCESS
Wang Changming1，Feng Qingling2
（1.Beijing Institute of Light Industry，Beijing 100037；
2.Tsinghua University，Beijing 100084）
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.
Key words: crystallization aluminium TiC
