摘要
采用固相烧结法制备了ZnO替代MgO掺杂的堇青石基红外陶瓷粉体,通过红外辐射率测试、X射线衍射、热分析和红外吸收光谱等分析与表征,探讨了烧成温度、ZnO的掺杂量对其红外辐射率的影响。结果表明,在烧成温度为1 380℃、ZnO的掺杂量为22.5%(物质的量分数)时,所获得的堇青石基红外陶瓷粉体为单一相晶体,结晶完全,红外辐射率达0.978;适量地掺杂ZnO替代MgO,可在结构中使Zn2+代替Mg2+,引起堇青石结构中的非对称性,从而提高堇青石的红外吸收能力和辐射能力。
ZnO-doped cordierite ceramic powder was prepared by solid-phase sintering. The effects of the sintering temperature and doping ratio on the infrared radiance were investigated with infrared radiation, X-ray diffraction（XRD）, thermal analysis and infrared（IR） absorption spectrum. The results indicated that the acquired cordierite ceramic powder samples with radiating infrared waves was a pure solid with complete crystal and its infrared radiance was 0. 978, when using treated temperature of 1 380 ℃ and ZnO doping mole percentage of 22.5%. The results also indicated the cordierite doped by appropriate amount of ZnO to replace of MgO could increase the asymmetry of cordierite structure and improve the infrared absorbency and radiation ability of eordierite.
出处
《分析测试学报》
CAS
CSCD
北大核心
2009年第6期733-737,共5页
Journal of Instrumental Analysis
基金
江苏省高技术研究资助项目(BG2007011)
