排序方式: 共有7条查询结果,搜索用时 15 毫秒
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用重复卷积法求解物理宽化函数吴万国,林嘉 (福州大学中心实验室,福州350002)(中国(福建)对外贸易中心集团,福州350001)关键词X射线衍射,晶粒度,晶格畸变,重复卷积粉末试样的X射线衍射谱线一般具有一定的宽度,引起话线宽化的主要原因有仪器致... 相似文献
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采用XRD和SEM法确定莫来石-堇青石复相材料的晶相结构及其含量。探讨不同含量硅灰粉尘对复相材料的晶相结构与性能的影响。实验结果表明:复相材料中存在α-堇青石、β-堇青石、μ-堇青石和莫来石四种晶相。堇青石含量随着硅灰粉尘结合剂含量的增加而增加。莫来石含量随着结剂含量的增加而减少。根据结构上的分析结果,确定2#为最隹的配方,其堇青石和莫来石含量分别为66.0%和33.7%,抗折强度为27.69Mpa,1次和10次热震抗折强度保持率分别为63.36%和33.7%,体积密度为2.69 g/cm3. 相似文献
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硅微粉结合SiC窑具氧化动力学 总被引:2,自引:0,他引:2
The SiC sagger bonded with silica fume can react with oxygen at high temperatue which results in a descent of SiC content and shortens the life of the sagger. The oxidization rats is greater at higher temperature. The addition of MnO2 mineralizer makes the binding layer more stable, denser and more homogeneous, which obstructs the diffusion of O2 and lowers the rate of oxidization. The kinetic equations for oxidation of SiC sagger with mineralizer are G(1100℃)=1.67×10-4τ0.72, G(1300℃)=4.22×10-4τ0.98 and those without mineralizer are G(1100℃)=9.88×10-4 τ0.48, G(1300℃)=1.72×10-3 τ0.70 and those without mineralizer are G(1100℃)=1.67×10-4 τ0.72, G(1300℃)=4.22×10-4 τ0.98. 相似文献
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