| SiC纳米粉表面研究 |
| |
| 引用本文： | 杨修春,韩高荣,李福燊,丁子上,周国治. SiC纳米粉表面研究[J]. 无机材料学报, 1998, 13(1): 99-104 |
| |
| 作者姓名： | 杨修春 韩高荣 李福燊 丁子上 周国治 |
| |
| 作者单位： | 北京科技大学理化系; 北京 100083; 浙江大学材料系; 杭州310027 |
| |
| 基金项目： | 国家自始科学基金!59272068 |
| |
| 摘 要： | 借助于TEM、IR和XPS分析；对新鲜的SiC纳米粉表面和不同存放时间及处理条件下的样品表面进行分析比较，发现新鲜的作品表面主要以物理吸附氧为主（78.25％），化合态氧为辅（21.75％），在空气中存放一个月后，O／Si比由新鲜样品表面的0.49上升至0.70表面发生氧化,继续存放一个月，O／Si比增至0．77；但表面氧化速度变缓,在潮湿空气中SiC纳米粉更易氧化．离子刻蚀分析表明，O主要分布在粉末表面．
|
| 关 键 词： | SiC纳米粉 表面氧化 物理吸附氧 化合态氧 |
| 收稿时间： | 1996-12-26 |
| 修稿时间： | 1997-02-26 |
Studies of the Surface of SiC Nanometer Powder |
| |
| YANG Xiu-Chun,HAN Gao-Rong,LI Fu-Shen,DING Zi-Shang,ZHOU Guo-Zhi. Studies of the Surface of SiC Nanometer Powder[J]. Journal of Inorganic Materials, 1998, 13(1): 99-104 |
| |
| Authors: | YANG Xiu-Chun HAN Gao-Rong LI Fu-Shen DING Zi-Shang ZHOU Guo-Zhi |
| |
| Affiliation: | Department of Physical Chemistry; Science and Technology University Beijing Beijing 100082 China; Department of Materials Science and Engineering; Zhejiang Unversity Hangzhou 310027 Chine |
| |
| Abstract: | The surface composition and bonding of a wide variety of SC nanometer poal.ders were characterized by TEM, IR and XPS. The results show that oxygen mainly exists in the form of physical adsorption for fresh SiC nanometer powder(adsorbed oxygen-78.25%, combined oxygen-21 .75%).When the powder was kept in air for a month, its O/Si mole ratio added from 0.49 to 0.70, when the powder was kept in air for two month, the O/Si mole ratio added to 0.77. The results showthat the oxidization of the powder becomes slower after a month. Oxidization of the poundder is easier in wet air than in dry air. Oxygen content decreases with increasing Ar sputtering time.and oxygen is mainly distributed over the surface of the powder. |
| |
| Keywords: | SiC nanometer powder surface oxidization adsorbed oxygen combined oxygen |
| 本文献已被 CNKI 维普 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 |
