CaO-Al2O3-SiO2 system glass were used to produce foam glass-ceramics with high performance. Influence of ZnO and CaO contents on the crystallization and foaming behavior of CaO-Al2O3-SiO2 glass, were investigated using graphite as foaming agent. Addition of ZnO can suppress the crystallization of pseudowollastonite, improve the sintering of the mixture of glass powder and foaming agent, and reduce the combustion-loss of foaming agent at low temperature. Further addition of CaO leads to higher crystallinity, as well as higher glass-viscosity, which will hamper the foaming process and get poorer foaming ability. 18wt% CaO and 6wt% ZnO in CaO-Al2O3-SiO2 glass are helpful to produce foam glass ceramics with high porosity at the sintering temperature of 1000°C.%以CaO-Al2O3-SiO2玻璃为基体,以石墨为发泡剂,制备硅灰石基泡沫微晶玻璃,研究了玻璃中引入ZnO和增加CaO含量对析晶与发泡的影响.结果表明,ZnO可降低发泡过程中假硅灰石晶相的析出量,促进玻璃粉与发泡剂混合物的烧结,降低发泡剂在较低温度下的损耗.提高CaO含量,样品结晶度增大,相同温度下玻璃的粘度增加,发泡效率降低.原料中ZnO加入量6wt％、CaO含量为18wt％的CaO-Al2O3-SiO2玻璃粉,较低温度下烧结充分,发泡剂损耗相对较少,在1000℃的发泡温度下可获得气孔率高的泡沫微晶玻璃.
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