不同含量Li_2CO_3对β-锂辉石形貌结构的对比分析
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摘要
采用分步加热法制备出掺入Li_2CO_3含量为10wt%、17wt%的β-锂辉石样品,对两种不同Li_2CO_3掺入量的样品进行XRD及SEM的分析,结果表明:Li_2CO_3掺入量为10wt%时,致密度较高,β-锂辉石纯度低,β-锂辉石固溶体含量相对较多;Li_2CO_3掺入量为17wt%时,β-锂辉石的纯度高,气孔较多,致密性相对较差.
The β-Spodumene was sythesized by step-heating method, the content of the Li_2CO_3 was 10wt%,17wt%. The crystalline structure and morphology were studied by XRD and SEM, respectively. The result showsthat, when Li_2CO_3 addition is 10wt%, the density and porosity of the β-Spodumene were small, the many solid solu-tion of the β-Spodumene was formed, β-Spodumene was lower purity; when Li_2CO_3 addition is 17wt%, there is ahigh purity, but the density and porosity was poor relatively.
The β-Spodumene was sythesized by step-heating method, the content of the Li_2CO_3 was 10wt%,17wt%. The crystalline structure and morphology were studied by XRD and SEM, respectively. The result showsthat, when Li_2CO_3 addition is 10wt%, the density and porosity of the β-Spodumene were small, the many solid solu-tion of the β-Spodumene was formed, β-Spodumene was lower purity; when Li_2CO_3 addition is 17wt%, there is ahigh purity, but the density and porosity was poor relatively.
引文
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[2]胡晓洪,张庆今.锂辉石的工业应用[J].中国陶瓷,1995(3):34-36.
[3]徐肖虹,饶郑刚,吴建峰,等.太阳能热发电用锂辉石低膨胀陶瓷的制备及其低膨胀机理研究[C].中国硅酸盐学会陶瓷分会,2012:21-24.
[4]ROY Rustum,ROY Della M,OSBORN E F.Compositional and Stability Relationships Among the Lithium AIuminosi Iicates:Eucryptite,Spodumene and Petalite[J].Phase-Equilibrium Studies of Lithium Aluminosilicates,1950,33(5):152-159.
[5]马振强.高硅石英陶瓷和锂辉石陶瓷的制备及性能研究[D].海口:海南大学,2012.
[6]李婷婷,张斯通,季家友,等.锂辉石陶瓷制备与抗热震性能[J].武汉工程大学学报,2011,33(7):91-96.
[7]沈振江,陈燕,陈万平,等.锆元素不同掺杂方式对钛酸钡陶瓷介电性能的影响[J].中国陶瓷,2011,41(1):1001-9642.
[8]范素华,王培吉,黄世峰,等.钽掺杂对钛酸钡基陶瓷介电性能影响的研究[J].硅酸盐通报,2002(4):36-39.
[9]骆春媛,刘敬肖,史非,等.钇掺杂Ba Ti O3半导体陶瓷的制备[J].大连工业大学学报,2014,33(2):125-126.