摘要
用污泥焚烧灰和废玻璃作为原料一阶段成核结晶法制备微晶玻璃,结果发现,当晶化温度从800℃升高到950℃时,微晶玻璃中玻璃相降低、球状晶体尺寸增加,微晶玻璃主晶相为硅灰石Ca Si O3和透辉石Ca(Mg,Al)(Si,Al)2O6,在晶化温度为900℃时,物理和机械性能最好,其密度达2.65 g/cm3、抗弯强度达61.8 MPa、热膨胀系数为7.3×10-6 mm/K。
Glass-ceramics are prepared by melting and crystallization treatment at different temperatures using ash from sludge incinerator and glass powder as raw materials. Results showed that with the increase of the crystallization temperature from 800 ℃ to 950 ℃, there was a decrease of the proportions of amorphous glassy in the glass-ceramics, meanwhile, the spherical crystals grew up and tended to interlock. The main crystalline phase of the glass-ceramics is wollastonite(Ca SiO3) and diopside(Ca(Mg,Al)(Si,Al)2O6. It is found that the glass-ceramics firing at 900 ℃ has the optimal physical and mechanical, and it has density of 2.65 g/cm3, bending strength of 61.8 MPa, thermal expansion coefficient of 7.3×10-6 mm/K respectively.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2015年第5期46-49 63,63,共5页
China Ceramics
基金
住房和城乡建设部科学技术计划项目(2014-K4-014)
国家自然科学基金青年科学基金(20806051)
国家自然科学基金面上项目(51378332)
关键词
污泥焚烧飞灰
熔融
微晶玻璃
晶化温度
Sludge incineration fly ash
Melting
Glass-ceramics
Crystallization temperature
