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从热力学和热模拟试验两个方面研究了碳饱和铁浴内碳氮化钛的生成机理。利用 CONFOCAL激光高温显微镜的试验数据重新确定了钛在碳饱和铁浴内的溶解度和碳氮化钛形成所需的最低钛含量。结果表明在碳饱和铁浴内生成碳化钛和氮化钛的最低钛含量较采用现行热力学数据计算的结果要低。采用长坩埚法研究了不同温度梯度条件下碳氮化钛的形成 ,结果发现碳氮化钛在温度梯度较大的耐火材料和铁水界面有团聚行为
The formation mechanism of titanium carbonitride in carbon saturated iron bath was studied from two aspects of thermodynamics and thermal simulation. The experimental data of the CONFOCAL laser pyrolysis microscope were used to re-determine the solubility of titanium in the carbon-saturated iron bath and the minimum titanium content required for titanium carbonitride formation. The results show that the lowest titanium content of titanium carbide and titanium nitride formed in the carbon-saturated iron bath is lower than that calculated by current thermodynamic data. The long crucible method was used to study the formation of titanium carbonitride under different temperature gradients. It was found that the carbonitride nitride has the agglomeration behavior at the interface between refractory and hot metal with large temperature gradient