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首页> 外文会议>Asian Pacific Conference on Fracture and Strength;APCFS; 20061122-25;20061122-25; Sanya(CN);Sanya(CN) >Microhardness and Machinability of Fluorphlogopite-Mullite Glass-Ceramics
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Microhardness and Machinability of Fluorphlogopite-Mullite Glass-Ceramics

机译：氟金云母-莫来石玻璃陶瓷的显微硬度和可加工性

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摘要

Effects of mullite on the structure, microhardness and machinability of fluorphlogopite-mullite glass-ceramics were investigated by X-ray diffractometry (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and microhardness tester. Results show that the microhardness and machinability are related closely to its microstructure. The microhardness decreases remarkably with the increase of crystallization and the formation of interlocking structure. The addition of mullite can decrease the size of mica crystals, which results in the spoil of interlocking structure. The microhardness of the glass-ceramics is slightly increased and then decreased with the addition of mullite. When the content of mullite is 15wt%, the glass-ceramics shows good machinability after reheated at 1200℃ for 2h.
机译：通过X射线衍射（XRD），差示扫描量热法（DSC），扫描电子显微镜（SEM）和显微硬度测试仪研究了莫来石对氟金云母-莫来石玻璃陶瓷的结构，显微硬度和可切削性的影响。结果表明，显微硬度和切削性与其显微组织密切相关。随着结晶度的增加和互锁结构的形成，显微硬度明显降低。莫来石的添加可以减小云母晶体的尺寸，从而导致互锁结构的破坏。微晶玻璃的显微硬度随莫来石的加入而略微增加，然后降低。当莫来石含量为15wt％时，微晶玻璃在1200℃再加热2h后，具有良好的切削加工性。

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