| TiC陶瓷先驱体制备和裂解研究 |
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| 引用本文： | 赵丹,张长瑞,胡海峰,张玉娣,杨国威,黄飞虎. TiC陶瓷先驱体制备和裂解研究[J]. 稀有金属材料与工程, 2009, 38(Z2) |
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| 作者姓名： | 赵丹 张长瑞 胡海峰 张玉娣 杨国威 黄飞虎 |
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| 作者单位： | 国防科技大学,国防科技重点实验室,湖南,长沙,410073 |
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| 摘 要： | 以钛酸四丁酯和二乙烯基苯(DVB)为原料,制备了TiC先驱体,并采用红外(IR)、热重-差热(TGA-DSC)、X射线衍射(XRD)等方法对先驱体和裂解产物进行了表征.结果表明:在283～296℃温度段,由于有机物分解出小分子导致TGA-DSC曲线上大的失重;在445～461 ℃之间,先驱体分解生成TiO_2.更高温度下,TiO_2与DVB裂解生成的碳发生碳热还原反应,生成TiC,且随着裂解温度的提高,TiC的结晶度也随之提高.XRD分析表明随着DVB用量的增加,同一温度下制备的产物结晶度提高.1200 ℃裂解的陶瓷产率均在30%左右.
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| 关 键 词： | 钛酸四丁酯 二乙烯基苯 |
Study on the Preparation of TiC Ceramic by Precursors Process |
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| Zhao Dan,Zhang Changrui,Hu Haifeng,Zhang Yudi,Yang Guowei,Huang Feihu. Study on the Preparation of TiC Ceramic by Precursors Process[J]. Rare Metal Materials and Engineering, 2009, 38(Z2) |
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| Authors: | Zhao Dan Zhang Changrui Hu Haifeng Zhang Yudi Yang Guowei Huang Feihu |
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| Affiliation: | Zhao Dan,Zhang Changrui,Hu Haifeng,Zhang Yudi,Yang Guowei,Huang Feihu (Key Laboratory of Advanced Ceramic Fibers & Composites,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | Titanium carbide precursor was prepared by the reaction of titanium butoxide with divinylbenzene (DVB). The synthesized products and the pyrolysis products were characterized by infrared (IR), thermogravimetric-differential scanning calorimeter (TGA-DSC) and X-ray diffraction (XRD). The results show that the volatilization of small molecules caused the considerable mass loss in the interval of 283～296.76℃. The titanium-containing precursors decomposed between 445℃ and 461℃ and TiO_2 was obtained. At higher temperature, carbothermal reduction process was carried out between TiO_2 and pyrolytic carbon and TiC was got. The crystal degree of TiC is improved with the temperature increasing. The results of XRD indicate that the crystal degree is improved while more DVB was added. The ceramic yields of different reagent ratios are all about 30%. |
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| Keywords: | TiC titanium carbide titaniumn-butoxide divinylbenzene |
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