β-Zn4Sb3是一种重要的中温热电材料,但其较差的力学强度和可加工性限制了其实际应用.本文采用熔体旋甩法结合放电等离子烧结技术快速制备了一系列具有高热电性能和高力学强度的β-Zn4+xSb3块体材料.通过调节Zn的含量,优化了其热电性能,随着Zn含量的增加,电导率增大,Seebeck系数有所下降,热导率增加.在700K时,Zn4.32Sb3样品的ZT值达到1.13,相比熔融法制备的样品提高了约40%.该制备方法所得到的样品具有极高的抗压强度,与熔融法制备的样品相比较,所有样品的抗压强度均提高了一倍以上,这种高热电性能和高力学强度的β-Zn4+xSb3块体材料具有很好的应用前景.
参考文献
| [1] | Tapiero M,Tarabichi S,Gies J G,et al.Preparation and characterization of Zn4Sb3.Sol.Energ.Mater.,1985,12(4):257-274. |
| [2] | Snyder G J,Christensen M,Nishibori E,et al.Disordered zinc in Zn4Sb3 with phonon-glass and electron-crystal thermoelectric properties.Nat.Mater.,2004,3(7):458-463. |
| [3] | Cargnoni F,Nishibori E,Rabiller P,et al.Interstitial Zn atoms do the trick in thermoelectric zinc antimonide,Zn4Sb3:a combined maximum entropy method X-ray electron density and Ab inifio electronic structure study.Chem.Eur.J.,2004,10(16):3861-3870. |
| [4] | Bhattacharya S,Hermann R P,Keppens V,et al.Effect of disorder on the thermal transport and elastic properties in thermoelectric Zn4Sb3.Phys.Rev.B,2006,74(13):134108-1-5. |
| [5] | Nolas G S,Poon J,Kanatzidis M G Theme article-recent developments in bulk thermoelectric materials.MRS Bull.,2006,31:199-205. |
| [6] | Caillat T,Fleurial J,Borshchevsky A.Preparation and thermoelectric properties of semiconducting Zn4Sb3.J.Phys.Chem.Solids,1997,58(7):1119-1125. |
| [7] | Izard V,Record M C,Tedenac J C,et al.Discussion on the stability of the antimony-zinc binary phases.Calphad,2001,25(4):567-581. |
| [8] | Record M C,Izard V,Bulanova M,et al.Phase transformations in the Zn-Cd-Sb system.Irttermetallics,2003,11(11/12):1189-1194. |
| [9] | Mozharivskyj Y,Pecharsky A O,Bud'ko S,et al.A promising thermoelectric material:Zn4Sb3 or Zn6-δSb5.Its composition,structure,stability,and polymorphs.Structure and stability of Zn1-δSb.Chem.Mater.,2004,16(8):1580-1589. |
| [10] | Ueno K,Yamamoto A,Noguchi T,et al.Optimization of hot-press conditions of Zn4Sb3 for high thermoelectric performance:I.physical properties and thermoelectric performance.J.Alloys Compd.,2004,384(1/2):254-260. |
| [11] | Zhang L T,Tsutsumi M,Ito K,et al.Effects of ZnSb and Zn indusions on the thermoelectric properties of β-Zn4Sb3.J.Alloys Compd.,2003,358(1/2):252-256. |
| [12] | Ur S C,Nash P,Kim I H.Solid-state syntheses and properties of Zn4Sb3 thermoelectric materials J.Alloys Compd.,2003,361(1/2):84-91. |
| [13] | Ur S C,Nash P,Kim I H.Mechanical alloying and thermoelectric properties of Zn4Sb3.J.Mater.Sci.,2003,38(17):35533558. |
| [14] | Izard V,Record M C,Tedenac J C.Mechanical alloying of a new promising thermoelectric material,Sb3Zn4.J.Alloys Compd.,2002,345(1/2):257-264. |
| [15] | Pedersen B L,Iversen B B,Thermally stable thermoelectric Zn4Sb3 by zone-melting synthesis.Appl.Phys.Lett.,2008,92(16):161907-1-3. |
| [16] | Nakamoto G,Kinoshita K,Kurisu M,Thermal expansion anomalies at high temperatures near stoichiometric Zn4Sb3 composition.J.Alloys Compd.,2007,436(1/2):65-68. |
| [17] | 关振铎,张中太,焦金生.无机材料物理性能.北京:清华大学出版社,2004:81. |
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