助手标题
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
共[9]条 当前为第1条到9条
 

相关语句
未完全匹配句对
    Because of this, the viscosity、 the glass melting temperature(1610℃) decrease, also La_2O_3 can accelerate the crystallization, but there is no influence on the main crystal phase which is β-quartz, and with adding La_2O_3 the dimension of the crystal and heat expansion coefficient increase, intension performance becomes lower.
    同时,La_2O_3能够促进析晶,但对微晶玻璃的主晶相没有影响,仍为β—石英固熔体,随着La_2O_3的增加,微晶玻璃中的晶粒尺寸逐渐长大,微晶玻璃试样的热膨胀系数变大,抗折强度降低。
    In the glass, the amounts of β-quartz and MgO·Al_2O_3-SiO_2 reached the maximum value during iso-thermal treatment at 950℃, whereas the amount of α-cordierite increased monotonously with time. This suggests that α-cordierite is formed not only by the direct precipitation, but also by the transformation of β-quartz and MgO·Al_2O_3·SiO_2.
    在950℃下热处理的玻璃中,β石英固溶体和MgO·Al-2O_3·SiO_2晶体的析出量均随热处理时间的延长有极大值出现,而α堇青石的析出量则一直随时间的延长而增大。
    The precipitation of β-quartz,MgO·Al_2O_3·SiO_2 and α-cordierite was observed for the sample with polished surface. The surface crystal-lization in this case developed into the glass with the dendrite structure.
    而研磨表面的结晶层则由α堇青石、β石英固溶体、透锂长石型MgO·Al_2O_3·SiO_2晶体三种晶相组成,并呈树枝状向玻璃内部长大,靠近结晶层的玻璃相中也没有球形分相粒子群出现。
    The results showed that the densification occured between 700~900℃, before the formation of crystalline cordierite, α-cordierite was formed through μ-cordierite, β-quartz solid solution and spinel at 1 150℃.
    研究结果表明:坯体的致密化过程先于MAS晶体的形成,该过程发生在700~900℃之间,α-MAS是通过μ-MAS、β-石英固溶体及尖晶石于1150℃反应而形成的。
    The magnesium aluminotianate ( MAT) is precipitated in glass at 850 C, and -quartz solution ( -QSS ), -quartz, -cordierite are precipitated in sequence,-cordierite is precipitated at 950 C.
    镁铝钛酸盐作为初晶相于850℃左右析出,随着温度的升高,玻璃中依次析出β-石英、α-石英、α-堇青石等晶体。 α-堇青石于950℃左右开始析出。
    After heat-treatment, the main crystal phase of the glass-ceramic was 3 -quarts solid solution, whose diameter was less than l00nm and volume 30-50%.
    经热处理后,微品玻璃的主晶相为β-石英固溶体,其晶粒直径小于100nm,体积份数为30~50%。
    The result shows that, as far as the two-stage heating treatment, the crystalline phase of glass-ceramics with TiO2is same as that of the glass-ceramics with P2Os, the main crystals are -quartz S.S, which contributed to the lower thermal expansion coefficient of these glass-ceramics;
    结果表明:在两步法实验中,以TiO_2为晶核剂的微晶玻璃和以P_2O_5为晶核剂的微晶玻璃所析出的晶相是一样的,都是β-石英固溶体,使试样热膨胀系数比基础玻璃大大降低。
    First, we research on the connection of MgO and ZnO-doping content with the glass ceramic's microstructure, mechanical performance and thermal expenditure. The results demonstrate that MgO and ZnO doping make the temperature of melt felled obviously.
    通过实验及对微晶玻璃微观结构的分析以及性能测试,结果表明:MgO和ZnO具有良好的助熔效果,主晶相都为β-石英固溶体,晶粒尺寸都在100nm左右。
    It is found that, the law is induced mainly from regularly change of the content of p-quartz( low coefficient of thermal expansion, high density) resulting from transformation of condensate depression and crystal phase(β-quartz→β-spodumene).
    分析发现,这主要是由于过冷度的变化和晶型转变(β-石英固溶体→β-锂辉石)引起的β-石英固溶体(低膨胀系数、高密度)含量的规律性增减所造成的。
 

首页上一页1下一页尾页 

 
CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社