中钛型含钛高炉渣制微晶玻璃及其性能研究
发布时间：2018-07-24 21:37
【摘要】：以中钛型含钛高炉渣为主原料制备微晶玻璃,利用渣中的TiO_2作晶核剂。采用差示扫描量热法(DSC)、X射线衍射(XRD)和扫描电子显微镜(SEM)等分析技术研究了含钛高炉渣用量的变化对基础玻璃晶化、微晶玻璃性能的影响。结果表明,渣中适量的TiO_2对玻璃晶化有较好的促进作用。渣用量较低时制得的微晶玻璃的主晶相为硅灰石,但当渣用量超过70%时,主晶相发生变化,变为钙铝黄长石等长石类矿相。中钛型含钛高炉渣用量为63%左右时,制得的微晶玻璃晶相含量合适,性能最好。此时采用的热处理制度为:核化温度720℃,保温1h,晶化温度945℃,保温2h,制得的微晶玻璃抗弯强度为121.68 MPa,显微硬度为7.81GPa。
[Abstract]:Glass-ceramics were prepared from medium titanium containing titanium blast furnace slag and TiO_2 in slag was used as nucleating agent. The effect of the content of titanium-bearing blast furnace slag on the basic glass crystallization and glass-ceramics properties was studied by means of differential scanning calorimetry (DSC) X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that proper amount of TiO_2 in slag can promote the crystallization of glass. The main crystalline phase of glass-ceramics was wollastonite when slag content was low, but when slag content exceeded 70%, the main crystal phase changed and changed into feldspar mineral phase such as calcium aluminum feldspar. When the content of titanium-containing blast furnace slag is about 63%, the content of glass-ceramics crystal phase is suitable and the properties are the best. The heat treatment system is as follows: nucleation temperature 720 鈩，
本文编号：2142726
[Abstract]:Glass-ceramics were prepared from medium titanium containing titanium blast furnace slag and TiO_2 in slag was used as nucleating agent. The effect of the content of titanium-bearing blast furnace slag on the basic glass crystallization and glass-ceramics properties was studied by means of differential scanning calorimetry (DSC) X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that proper amount of TiO_2 in slag can promote the crystallization of glass. The main crystalline phase of glass-ceramics was wollastonite when slag content was low, but when slag content exceeded 70%, the main crystal phase changed and changed into feldspar mineral phase such as calcium aluminum feldspar. When the content of titanium-containing blast furnace slag is about 63%, the content of glass-ceramics crystal phase is suitable and the properties are the best. The heat treatment system is as follows: nucleation temperature 720 鈩，
本文编号：2142726
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