以钨酸钠、三氧化钨和钨粉为原料,采用固相微波技术在700℃一步合成了钠钨青铜.X射线粉末衍射、X射线能谱分析表明,所制备样品为单相的Na0.76WO3多晶.低温变温电阻测量发现:材料具有类半导体的导电行为.此外,样品还呈现明显的正湿敏特性,500 W微波加热功率所制备样品在60℃、湿度RH 60％的电阻率较RH 30％的电阻率增加了117％.
参考文献
| [1] | Kwang-Soon Lee;Dong-Kyun Seo;Myung-Hwan Whangbo .Electronic Band Structure Study of the Anomalous Electrical and Superconducting Properties of Hexagonal Alkali Tungsten Bronzes A_xWO_3 (A = K, Rb, Cs)[J].Journal of the American Chemical Society,1997(17):4043-4049. |
| [2] | Yang XG.;Li C.;Mo MS.;Zhan JH.;Yu WC.;Yan Y.;Qian YT. .Growth of K0.4WO3 whiskers via a pressure-relief-assisted hydrothermal process[J].Journal of Crystal Growth,2003(3/4):594-599. |
| [3] | Fan R.;Gui Z.;Sun Z.;Li SY.;Chen ZY.;Chen XH. .Chemical synthesis and electronic conduction properties of sodium and potassium tungsten bronzes[J].The journal of physics and chemistry of solids,2000(12):2029-2033. |
| [4] | Song Yue;Yuan Zhang .Electronic Transport Properties of Sodium Tungsten Bronzes Nao.54WO3 Single Crystals[J].Journal of materials science & technology,2012(6):569-571. |
| [5] | 王锦辉,黄润生,刘公强,都有为.钠钨青铜NaxWO3（x～0.88）纳米晶的机械化学法制备研究[J].功能材料,2004(01):58-60. |
| [6] | D. Agrawal .Latest global developments in microwave materials processing[J].Materials research innovations,2010(1):3-8. |
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%