| 硅砂表面高温改性提高水玻璃砂强度的机理 |
| |
| 引用本文： | 朱玉龙,蔡震升,胡汉起.硅砂表面高温改性提高水玻璃砂强度的机理[J].北京科技大学学报,1998(2). |
| |
| 作者姓名： | 朱玉龙 蔡震升 胡汉起 |
| |
| 作者单位： | 北京科技大学材料科学与工程学院 |
| |
| 摘 要： | Ｘ－射线衍射（ＸＲＤ）、扫描电镜（ＳＥＭ）、能谱（ＥＤＳ）等的研究表明，硅砂表面存在吸附膜．高温改性使吸附膜被牢固烧结在砂粒表面，改变了吸附膜和砂粒表面的物理和化学特性，大大改善了湿润性，使粘结桥的断裂形式从附着断裂向内聚断裂转化，提高了水玻璃砂的强度．
|
| 关 键 词： | 铸造硅砂，高温改性，水玻璃砂，强度 |
Mechanism of Increase in Strength of Sodium Silicate-bonded Sandby Silica Sand Surface Modified in High Temperature |
| |
| Zhu Yulong, Cai Zhensheng, Hu Hanqi.Mechanism of Increase in Strength of Sodium Silicate-bonded Sandby Silica Sand Surface Modified in High Temperature[J].Journal of University of Science and Technology Beijing,1998(2). |
| |
| Authors: | Zhu Yulong Cai Zhensheng Hu Hanqi |
| |
| Abstract: | With the aid of XRD,SEM . EDS etc., there is absorbed film on sand grain surface, high temperature modify makes the film sintered firmly on sand grain surface. Thus it changes physical and chemical characteristics of the film and sand grain surface, improves the wetting properties greatly, makes the fracture features of bonding bridge change from the adhesive to the cohesive and raises the strength of sodium sili- cate-bonded sand. |
| |
| Keywords: | foundry silica sand high temperature modify sodium silicate-bonded sand strength |
| 本文献已被 CNKI 等数据库收录！ |
