采用常压烧结技术,分别对Ti/Sn/C和Ti/Sn/TiC两种配料,在950～1250℃温度范围、保温15～360 min,真空条件下进行烧结.结果表明,两种配料均在1200℃短时间内合成了高纯度Ti2SnC粉.利用X射线衍射(XRD),能量色散谱仪(EDS)及扫描电镜(SEM)对Ti2SnC粉末进行了表征,并对Ti2SnC的形成机制进行了分析.所制备的Ti2SnC为片状颗粒,表面光滑,颗粒尺寸小于10 μm,厚度约为1～2 μm.Ti2SnC的形成机制是,在Ti-Sn-C反应系统中,Ti和Sn先反应形成Ti-Sn化合物;然后是Ti和C反应形成TiC;最后,Ti-Sn化合物和TiC反应形成Ti2SnC.此反应机制进一步由Ti-Sn-TiC反应系统验证.
参考文献
| [1] | Michel W.Barsoum .The M_(N+1)AX_N Phases: A new Class of solids; Thermodynamically Stable Nanolaminates[J].Progress in Solid State Chemistry,2000(1/4):201-281. |
| [2] | JEITSCHKO W;NOWOTNY H;BENESOVSKY F .Kohlen-stoffhaltige ternare Verbindungen (H-Phase)[J].Monatsch Chem,1963,94:672-676. |
| [3] | M. W. Barsoum;G. Yaroschuk;S. Tyagi .Fabrication and characterization of M2SnC (M = Ti, Zr, Hf and Nb)[J].Scripta materialia,1997(10):1583-1591. |
| [4] | T. El-Raghy;S. Chakraborty .Synthesis and characterization of Hf_2PbC, Zr_2PbC and M_2SnC (M Ti, Hf, Nb or Zr)[J].Journal of the European Ceramic Society,2000(14/15):2619-2625. |
| [5] | Yanchun Zhou;Hongying Dong;X. Wang;C. Yan .Preparation of Ti_2SnC by solid-liquid reaction synthesis and simultaneous densification method[J].Materials research innovations,2002(5/6):219-225. |
| [6] | Dong HY.;Chen SQ.;Zhou YC.;Yan CK. .Solid-liquid reaction synthesis and thermal stability of Ti2SnC powders[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2001(5):1402-1407. |
| [7] | Vincent H.;Mentzen BF.;Pastor S.;Bouix J.;Vincent C. .Chemical interaction between carbon and titanium dissolved in liquid tin: crystal structure and reactivity of Ti2SnC with Al[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1998(1/2):83-91. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%