| 孙和鑫,宋柏萱,陈红任,朱春城.自蔓延高温合成Ti2SnC粉体及反应机理的研究[J].材料导报,2016,30(14):84-87 |
| 自蔓延高温合成Ti2SnC粉体及反应机理的研究 |
| Synthesis and Reaction Mechanism of Ti2SnC by Self-propagation High-temperature Synthesis Technique |
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| DOI：10.11896/j.issn.1005-023X.2016.14.019 |
| 中文关键词: Ti2SnC 自蔓延高温合成 反应机理 |
| 英文关键词: Ti2SnC, self-propagation high-temperature synthesis, reaction mechanism |
| 基金项目:国家自然科学基金(51572064) |
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| 摘要点击次数: 1851 |
| 全文下载次数: 1370 |
| 中文摘要: |
| 采用自蔓延高温合成技术制备了Ti2SnC粉体材料,利用XRD、SEM、EDS、TEM及DTA等分析手段对其形貌结构进行表征,在室温条件下其晶格参数a和c分别为3.186 和13.630 。分析了Ti2SnC的形成机制。在Ti-Sn-C反应体系中,Sn在232 ℃时熔化为液态,随着温度的升高,钛包裹在碳的外面形成钛碳层,继续加热Ti和Sn反应生成Ti-Sn金属间化合物TixSny,如Ti6Sn5 和Ti5Sn3,在800 ℃左右钛碳层形成了TiC,在1100 ℃左右TiC与TixSny发生反应生成类盘状的Ti2SnC。 |
| 英文摘要: |
| Ti2SnC was synthesized by self-propagation high-temperature combustion synthesis (SHS), and characterized by XRD, SEM, EDS and DTA. The room-temperature lattice parameters a and c of Ti2SnC are estimated to be 3.186 and 13.630 , respectively. The SHS reaction mechanism in the Ti-Sn-C system was analyzed on the basis of the XRD, EDS, SEM and TEM as well as DTA.Sn started to melt into liquid at 232 ℃, while with the increasing temperature, C was coated by Ti layer. Then, Ti reacted with Sn to form Ti-Sn intermetallic compounds TixSny, such as Ti6Sn5 and Ti5Sn3, and TiC presented at around 800 ℃ with much exothermic heat. At 1100 ℃, the plate-like Ti2SnC was derived from TiC and TixSny. |
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