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| Si-Al-Zr-O系非晶原位晶化过程中的拉曼光谱和红外光谱研究 | |
| 引用本文： | Tan XP,Liang SQ,Chai LY,Zhang GW,Zhang Y. Si-Al-Zr-O系非晶原位晶化过程中的拉曼光谱和红外光谱研究[J]. 光谱学与光谱分析, 2011, 31(1): 123-126. DOI: 10.3964/j.issn.1000-0593(2011)01-0123-04 |
| 作者姓名： | Tan XP Liang SQ Chai LY Zhang GW Zhang Y |
| 作者单位： | 1. 中南大学冶金科学与工程学院,湖南长沙,410083;中南大学材料科学与工程学院,有色金属材料科学与工程教育部重点实验室,湖南长沙,410083 2. 中南大学材料科学与工程学院,有色金属材料科学与工程教育部重点实验室,湖南长沙,410083 3. 中南大学冶金科学与工程学院,湖南长沙,410083 |
| 基金项目： | 国家自然科学基金创新群体项目(50721003); 中南大学博士后基金项目资助 |
| 摘 要： | 借助Raman,IR和XRD等技术探讨了Si-Al-Zr-O系非晶在原位受控晶化过程中微结构变化.结果表明,Si-Al-Zr-O系非晶在920℃左右出现网络结构重整,形成了富Si区和富Zr和Al区.在920～950℃间,从富Zr区析出初晶相四方氧化锆,并从富Al区形成Al-Si尖晶石相.随着温度进一步升高,Al-Si尖... |
| 关 键 词： | Si-Al-Zr-O系非晶 红外光谱 拉曼光谱 微结构变化 |
Study of Raman and IR spectra for Si-Al-Zr-O amorphous bulk in-situ crystallization |
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| Tan Xiao-Ping,Liang Shu-Quan,Chai Li-Yuan,Zhang Guo-Wei,Zhang Yong. Study of Raman and IR spectra for Si-Al-Zr-O amorphous bulk in-situ crystallization[J]. Spectroscopy and Spectral Analysis, 2011, 31(1): 123-126. DOI: 10.3964/j.issn.1000-0593(2011)01-0123-04 | |
| Authors: | Tan Xiao-Ping Liang Shu-Quan Chai Li-Yuan Zhang Guo-Wei Zhang Yong |
| Affiliation: | TAN Xiao-ping1,2,LIANG Shu-quan2,CHAI Li-yuan1,ZHANG Guo-wei2,ZHANG Yong2 1.College of Metallurgical Science and Engineering,Central South University,Changsha 410083,China 2.Key Laboratory for Nonferrous Metal Materials of the Ministry of Education,School of Materials Science and Engineering,China |
| Abstract: | The structural changes in the in-situ controlled crystallizing process of Si-Al-Zr-O(SAZ) amorphous bulk were investigated by laser Raman (LRa), infrared (IR) and X-ray diffraction (XRD) techniques. The structure of the amorphous network apparently reorganized at about 920 degrees C, resulting in the formation of Si-rich and Al, Zr-rich regions. The t-ZrO2 was crystallized from the Zr-rich region at 920-950 degrees C and poorly defined Al-Si spinel was formed from the Al-rich regions. With the increase in temperature, the peak of Al-Si spinel was enhanced and then disappeared in the XRD pattern, and the characteristic IR band groups of mullite centered in the 1 200-1 100, 1 000-700 and 650-400 cm(-1) could be observed. At 1 100-1 150 degrees C, the Raman bands at 179 and 193 cm(-1) typical for the m-ZrO2 occurred and cristobalite was detected, and the main crystalline phases were identified as t-ZrO2 and mullite. These results indicated that mullite was formed by reaction between amorphous silica and the Al-Si spinel which was metastable phase. During the heating process, t-ZrO2 was crystallized firstly and a portion was transformed to m-ZrO2 at high temperature, and the left amorphous silica was transformed to cristobalite. |
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