【摘要】 借助自主设计的高活性合金熔体落滴法润湿角测量装置,对纯钛熔体与ZrO2(CaO)陶瓷铸型材料之间的润湿性和界面相互作用进行了研究,并借助SEM和EPMA等分析测试手段,对界面处垂直于界面方向的液/固截面的组织形貌和元素分布进行了分析。结果表明,钛熔体与ZrO2(CaO)在界面处发生了一定程度的化学反应,但界面化学反应不剧烈,钛熔体在ZrO2(CaO)陶瓷材料上不润湿,润湿角为103°,利用液/固界面处化学反应引起的体系总的自由能变化解释了界面化学反应对界面润湿性的影响。更多还原

【Abstract】 The wettability and the interfacial interaction between pure liquid titanium and ZrO2 (CaO stabilized) were studied by the self-designed measuring apparatus in argon atmosphere. The morphology and element distribution of the liquid/solid cross section perpendicular to the interface were analyzed by SEM and EPMA. Results show that some chemical reaction occurs in the interface between pure liquid titanium and ZrO2 (CaO stabilized), but it is not severe. The molten titanium is not wet on the ZrO2 (CaO stabilized), with the contact angle of 103°. The total free energy variation of the Ti/zirconia system caused by the liquid/solid interface reaction can explain the influence of interfacial reaction on the wettability.更多还原