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电镀烧结法制备Ti/SnO2-Sb2O4电极的研究 总被引:1,自引:0,他引:1
The Ti/SnO2-Sb2O4 electrode has been prepared by the electroplate-sinter method. The effect of SbCl3 adding amount and sintering temperature on its electrode lifetime and oxygen evolution potential were investigated by means of EDX, SEM and XRD analysis. The results indicated that the electrode appeared the best performance when the SbCl3 adding amounts was 0.2g and the sintering temperature was 550℃. In optimized conditions Ti substrate was entirely covered by SnO2-Sb2O4 and the combinations among them were tight. Due to the use of electroplate method, the electrical conductivity, the oxygen evolution potential and the electrode lifetime were increased, so the elec-tro-catalytic activity and the electrochemical stability of the prepared electrode were found to be superior. 相似文献
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K Yoon Y Yang P Lu D Wan HC Peng K Stamm Masias PT Fanson CT Campbell Y Xia 《Angewandte Chemie (International ed. in English)》2012,51(38):9543-9546
Ceria (CeO(2) ) hollow fibers with Pt nanoparticles (Pt?NPs) embedded in their inner surfaces were prepared by sequentially depositing Pt?NPs and CeO(2) sheaths on electrospun fibers of polystyrene, followed by calcination in air at 400?°C. Despite a relatively low Pt loading in this system, the turnover frequency for CO oxidation was 2-3 orders of magnitude higher than those of other systems, and the reactivity was also stable up to 700?°C. 相似文献
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J. Orewczyk 《Journal of Thermal Analysis and Calorimetry》2000,60(1):265-269
The paper presents results of research on the effect of the presence of calcium and magnesium in magnetite structure on its
reducibility. These are model studies of the phase which mostly affects reducibility of superfluxed sinter. Examinations were
carried out on samples melted and crystallized in a single crystal growing process.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
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高分辨率微光像增强器对微通道板(MCP)的孔径、空间结构和视场清晰度有着极为严格的技术要求。我们在引进的气熔压设备上,通过对压力、温度、保温保压时间等相互制约的工艺参数进行大量实验,已探索出孔径为6μm、孔间距为8μm的MCP的最佳工艺,即第一平台温度为500℃左右、熔压温度为560~590℃、压力为0.5~0.9Mpa,保温保压时间为60min左右。在光学显微镜和扫描电子显微镜下观察我们制作的MCP,发现复丝排列规整、边界相邻的两排单丝变形较小且排列有序、复丝顶角无畸变(即无扭曲、梅花丝、孔洞、错位)。与Photonis公司同种型号的MCP相比,我们制作的MCP的梅花丝少1/3左右。在标准输入下,我们的MCP增益比较高,增益均匀性有所改善,固定图像噪声在0~1级,视场清晰度得到了较大程度的提高。 相似文献
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二氧化硅陶瓷靶材的烧结 总被引:3,自引:0,他引:3
通过添加SiO2超微粉末,成功地实现了SiO2陶瓷的低温烧结,在1250℃的温度下,获得了密度接近理论值的高纯SiO2陶瓷靶材,对于不同微粉含量的靶材进行了断口形貌分析及其密度的比较,实验结果证明,超微粉的添加对SiO2低温下的致密烧结有明显的促进效果。 相似文献
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T. Karwan 《Journal of Thermal Analysis and Calorimetry》1995,45(5):1009-1013
The process of sintering oxidation of zinc and lead sulfide concentrates is discussed. The process product is Zn?Pb sinter, the main metal-bearing ingredient for the ISP shaft furnace. Zn?Pb concentrates contain three principal metal sulfides: ZnS, PbS and FeS2, of which ZnS plays the main role in forming the Zn?Pb sinter structure. It was decided to investigate the formation of ZnO crystallites. Zn?Pb sinters obtained on a D-L sinter belt (operating temperature 1250–1350°C) were subjected to SEM observations with simultaneous micro-X-ray analysis of sites chosen in the field under observation; ZnO crystallites formed as a result of the oxidation of ZnS have a typical dendrite structure leading to the formation of ‘sinter networks’; their structure is illustrated by SEM microphotographs. 相似文献
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