摘要
以油页岩渣为主要原料制备了微晶玻璃,采用DTA、XRD、SEM及FT-IR等测试手段,分析了核化温度和晶化温度对微晶玻璃微观结构的影响。结果表明:微晶玻璃的主晶相为钙铁透辉石,次晶相为钙长石;随着热处理温度的升高,晶体的规则程度增加,晶体尺寸和结晶度均呈现先增加后减小,最后回升的趋势;在最佳热处理(850℃×100min+980℃×80min)条件下,微晶玻璃形成纤维状细晶结构,红外吸收带发生最明显的分裂,显微硬度和抗压强度达到最大值。
The glass-ceramics was prepared with oil shale residue as primary material. Effects of nucleating temperature and crystallization temperature on the structure of glass-ceramics were analyzed by using DTA, XRD, SEM and FT-IR. The results show that the main crystalline phase of the glass-ceramics is hedenbergite, and anorthite is the minor crystalline phase. With increasing of heat treatment temperature, the crystals become more regular. The crystal size and crystallization rate increase first, then decrease and finally increase again. In the optimal heat treatment condition（850℃ × 100min ＋ 980℃ × 80min）, the glass-ceramics forms fibroid minicrystal structure, the FT-IR absorption bands appeare obvious split,and the micro-hardness and compressive strength achieve the maximum.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2008年第4期29-34,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金资助项目(50674024)
关键词
油页岩渣
微晶玻璃
核化温度
晶化温度
oil shale residue
glass-ceramics
nucleating temperature
crystallization temperature
