| 一种新型云母玻璃陶瓷的切削行为与显微结构 |
| |
| 引用本文： | 马新沛,李光新,沈莲,金志浩.一种新型云母玻璃陶瓷的切削行为与显微结构[J].无机材料学报,2004,19(1):48-52. |
| |
| 作者姓名： | 马新沛 李光新 沈莲 金志浩 |
| |
| 作者单位： | 材料强度国家重点实验室（西安交通大学）, 西安 710049 |
| |
| 基金项目： | 西安交通大学自然科学基金，西安交通大学研究生院博士学位论文基金 |
| |
| 摘 要： | 研制的材料在650℃晶化得到40％的云母晶体(其余为玻璃相)时,弯曲强度为150MPa,可在高速车削条件下形成连续的带状切屑,第一次在普通车削条件下使脆性的玻璃陶瓷材料表现出延性的材料去除模式.试验结果表明,脆性材料的延性切削模式的实现是由于云母晶体对裂纹走向的引导和玻璃相的强烈的剪切变形能力的共同作用.切削后,可在750℃再次晶化,随晶体体积份数的增加,弯曲强度提高到210MPa.
|
| 关 键 词： | 云母玻璃陶瓷 显微结构 延性切削 |
| 文章编号： | 1000-324X(2004)01-0048-05 |
| 收稿时间： | 2002-12-18 |
| 修稿时间： | 2003-2-19 |
Cut Behavior and Microstructure of a Novel Mica Glass-ceramic |
| |
| MA Xin-Pei,LI Guang-Xin,SHEN Lian,JIN Zhi-Hao.Cut Behavior and Microstructure of a Novel Mica Glass-ceramic[J].Journal of Inorganic Materials,2004,19(1):48-52. |
| |
| Authors: | MA Xin-Pei LI Guang-Xin SHEN Lian JIN Zhi-Hao |
| |
| Affiliation: | State Key Laboratory for Mechanical Behavior of Materials; Xi an Jiaotong University; Xi an 710049; China |
| |
| Abstract: | By optimizing the composition and microstructure, a new mica glass-ceramic with excellent machinability was obtained. For this kind of mica glass-ceramic, a continuous band chips can be formed in machining at a high velocity and cut depth after crystallizing at 650℃ and containing 40vol% of mica crystals (the rest is a glass phase), while the flexible strength reaches to 150MPa. The test results show that the mechanism of ductile-mode material removal of the brittle material is attributed to a combination of mica crystal guidance for crack propagation and the ability of glass phase to produce intense shearing strain. The further crystallizing at 750℃ can enhance the flexible strength to 210MPa with increasing the amount of crystalline phase after cutting. |
| |
| Keywords: | mica glass-ceramic microstructure ductile-mode material removal |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《无机材料学报》浏览原始摘要信息 |
|
点击此处可从《无机材料学报》下载全文 |
