复合晶核剂对混合玻璃体系制备微晶玻璃的影响  

Effect of compound nucleating agent on preparation of glass-ceramics by mixed glass system

作　　者：王语 何方[1] 栗政新[1] WANG Yu;HE Fang;LI Zhengxin(School of Materials Science and Engineering,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]河南工业大学材料科学与工程学院,郑州450001

出　　处：《超硬材料工程》2021年第3期12-15,共4页Superhard Material Engineering

摘　　要：为了能在低温下制备出微晶玻璃陶瓷结合剂,以适用于超硬磨具的制备,本试验以两种玻璃料的混合体系作为研究对象,以ZrO_(2)和P_(2)O_(5)作为晶核剂。探究了晶核剂的复合添加量、不同复合比例对混合玻璃体系析晶性能与力学性能的影响。对烧结样品进行X射线衍射分析、抗弯强度测试和扫描电镜分析。结果表明,在ZrO_(2)+P_(2)O_(5)的总含量为4.5wt%的情况下,且ZrO_(2)与P_(2)O_(5)的质量比为2∶1时,烧结样品中析出的晶体数量最多,此时抗弯强度出现了最大值74.95 MPa。In this paper,the mixed system of two kinds of glass materials was used as the research object,and ZrO_(2) and P_(2)O_(5) were used as nucleating agents in order to prepare glass-ceramic binder at low temperature to suit for superhard grinding tools.The effects of adding amount of nucleating agent and different composite proportion on the crystallization and mechanical properties of the mixed glass system were investigated.The sintered samples were analyzed by X-ray diffraction,flexural strength and scanning electron microscopy.The results show that,when the total content of ZrO_(2)+P_(2)O_(5) was 4.5wt%and ZrO_(2)∶P_(2)O_(5) was 2∶1,the most crystals were precipitated out of the sintered sample and the bending strength reached a maximum of 74.95 MPa.

关 键 词：微晶玻璃 复合晶核剂 分相体系 玻璃析晶 超硬材料磨具 

分 类 号：TQ164[化学工程—高温制品工业]