高炉内Ti(C,N)的生成,主要以渣-焦反应和渣-铁反应两种途径进行。两者形成的状态和机理不同。在渣-焦界面上,首先生成TiC,然后气相中氮原子向TiC晶格中扩散,形成间隙固溶体Ti(C,N),它的化学组成是不均匀的,渣中碱度和温度的变化,对Ti(C,N)的生成影响极大,渣-焦界面积愈大,愈有利Ti(C,N)的生成。
The formation of Ti(C, N) occurs principally on the interfacial reac-tions between slag and coke as well as between slag and liquid iron in the blast fur-nace. The mechanism and state of formation for these two paths are different. Atthe slag-coke interface, TiC is formed first, and the unhomogeneous interstitial solidsolution Ti(C, N) is then formed by nitrogen atom diffusion from furnace gas intoTiC lattice. The slag basicity and temperature are extremely influential in the forma-tion of Ti(C, N). The larger the slag-coke interface is, the more favourable the for-mation of Ti(C, N) will be.
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