钙镁硅酸盐系列结晶釉的研究——SiO_2含量变化对钙的偏硅酸盐矿物种属的影响

Crystalline Glaze Series of Calcium-magnesium Silicate --the influence of SiO_2 on crystal classes of CaSiO_3

研究一组CaO/MgO比值较高的结晶釉配方 ,分析并探讨SiO2 含量变化对析晶物相———钙的偏硅酸盐矿物种属的影响。结果显示 ,在环硅灰石和硅灰石的转变温度范围内 ( 112 5℃± 10℃ ) [1] 对结晶釉进行析晶处理时 ,随着SiO2 含量由少向多变化 ,釉析晶体中物相由单一的环硅灰石 ( β -CaSiO3)转变为环硅灰石与硅灰石并存 。

A group of crystalline glazes with hight CaO/MgO ratio were studied,and influence of SiO 2 on crystal classes of CaSiO 3 was discussed.The result showed,the major crystal phase in glazes,which treated with heat preservation at 1?120?℃(between the transformation temperature rang of cyclowollastonite and wollastonite,1?125±10?℃)was varied with different molal content of SiO 2.The composition of crystal phases changed from cyclowollastonite to cyclowollastonite and wollastonie,then to wollastonite with the increasing of SiO 2. Key words Content of SiO 2 Crystal class Cyclowollastonite Wollastonitedary students ate fast food.In order to avoid they often consume fast food,parents and themselves were the major subjects of nutritional education.