Wettability and interfacial behaviour of NdF3-LiF-Nd2O3 on TiB2-based ceramics
来源期刊：Journal of Rare Earths2009年第3期
论文作者：罗旭东 王兆文 胡宪伟 高炳亮 石忠宁 涂赣峰
文章页码：381 - 384
摘 要：Wettability of TiB2-based ceramics by NdF3-LiF-Nd2O3 melt was studied using sessile drop technique in this paper. Wetting experiment was carried out under inert atmosphere at 1050 °C. Chemical reactions which occurred on the solid-liquid interface and solid-gas interface during wetting process were discussed by thermodynamic calculations combined with X-ray diffraction（XRD） patterns. Micromorphology and element distribution of fracture surface at the interfacial region of solid/liquid system were analyzed by scanning electron microscope（SEM） equipped with energy dispersive spectrometry（EDS） . Contact angles of the drop were determined as a function of time in order to describe the wetting process,and wetting phenomenon was interpreted from a viewpoint of interface structure. The results showed that wetting was a dynamic wetting process with characteristics of reactive wetting. Penetration and oxidization phenomena during the experiment had great effect on wetting process.
罗旭东，王兆文，胡宪伟，高炳亮，石忠宁，涂赣峰
摘 要：Wettability of TiB2-based ceramics by NdF3-LiF-Nd2O3 melt was studied using sessile drop technique in this paper. Wetting experiment was carried out under inert atmosphere at 1050 °C. Chemical reactions which occurred on the solid-liquid interface and solid-gas interface during wetting process were discussed by thermodynamic calculations combined with X-ray diffraction（XRD） patterns. Micromorphology and element distribution of fracture surface at the interfacial region of solid/liquid system were analyzed by scanning electron microscope（SEM） equipped with energy dispersive spectrometry（EDS） . Contact angles of the drop were determined as a function of time in order to describe the wetting process,and wetting phenomenon was interpreted from a viewpoint of interface structure. The results showed that wetting was a dynamic wetting process with characteristics of reactive wetting. Penetration and oxidization phenomena during the experiment had great effect on wetting process.
关键词：
