具有定向显微结构的高强云母微晶玻璃  

STUDY ON HIGH STRENGTH AND TOUGHNESS MICA-CONTAINING GLASS-CERAMICS WITH PREFERENTIALLY ORIENTED MICROSTRUCTURE

作　　者：程慷果[1] 万菊林[1] 梁开明[1] 

机构地区：[1]清华大学

出　　处：《材料研究学报》1997年第3期309-312,共4页Chinese Journal of Materials Research

摘　　要：对云母微晶玻璃进行热压变形处理，得到了力学性能良好的新型云母微晶玻璃，其抗弯强度和断裂韧性可达300MPa和2．8MPa·m1/2，比传统云母微晶玻璃提高了2～3倍．扫描电镜（SEM）和X射线衍射（XRD）的研究结果表明：云母晶体在微晶玻璃中发生定向排列，其（001）晶面垂直于热压方向。A new type of mica-containing glass-ceramics has been prepared by means of hot-press technique. A unique microstructure was observed by scanning electron microscopy (SEM), i.e., lamellar fluorophlogovite-mica crystals distributed in glass with preferential orientation and their crystalline plane of (001) was pependicular to the direction of applied force of hot-pressing, confirmed by x-ray diffraction (XRD). The microstructure of the glass-ceramics leads to exceIlent mechanical properties, with flexural strength of approximately 300MPa and a corresponding fracture toughness of 2.8MPa. ml ', two to three times stronger than the conventional mica-containing glass-ceramics.

关 键 词：云母 微晶玻璃 择优取向 显微结构 

分 类 号：TQ171.733[化学工程—玻璃工业]