Titanium under high temperature can react with many elements and compounds. A variety of elements, according to the different reaction with titanium can be divided into four categories:

一. Halogen and chalcogen element and the generation of titanium compound covalent and ionic bonds

二. The transition elements, hydrogen, beryllium, boron, carbon and nitrogen element and titanium intermetallic compound and limited to generate solid solution;

三. Zirconium, hafnium and vanadium titanium, chromium, scandium element and generate an infinite solid solution;

四. Inert gas, alkali, alkaline earth metal, rare earth elements (except scandium), actinium, thorium does not react with titanium or basically do not react.