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反射谱
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    The relationship between SrAl 2O 4∶Eu powder processing and fluorescence effect was studied. The glass material with lower refractive index was added into the SrAl 2O 4∶Eu based ceramics. The diffuse reflectivity and the influence of fluorescence effect on reflection spectra of the ceramics were investigated.
    研究了SrAl2 O4∶Eu粉体制备与荧光性能的关系 ,考察其与低折射率玻璃复合制成陶瓷的漫反射性能及反射特性。
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  reflective spectra
The results showed that different light/detection probe-fruit distances influence the apple reflective spectra and SC predictions.
      


The methods of measuring weathering of flat glass by visual appearance, sorbed water, generated alkali, elliptieal polarisation meter, infrared reflection spectra, scanning electron microscopy, electron microprobe and X-ray photoelectron spectroscopy were described. The detailed diseussions were given to the advantages and disadvantages of above-mentioned methods and their practical application in the study of glass weathering.

本文阐述了测量平板玻璃发霉所用外观形貌、吸水量、浊度计、析碱量、椭圆偏振仪、红外反射谱、电子探针和X射线光电子能谱等测试方法.对上述方法的优缺点及玻璃发霉研究中的实际应用进行了详细讨论.

in this paper, Raman spectra, photocurrent and the UV-VIS reflectance aremeasured for studying the α-Fe_2O_3ultrafine particles adsorbed on Pt electrode. The blue shifts ofRaman peaks demonstrate the size quantization effect for the particles of 50 nm in diameter ascompared with the bulk material. With the changing of the potential , the photocurrent decrcases as theUV-VIS reflectance increases, and vice-versa. Therefore, the potential not only affects the hargetransfer direcdtion in the interface of electrede/redox...

in this paper, Raman spectra, photocurrent and the UV-VIS reflectance aremeasured for studying the α-Fe_2O_3ultrafine particles adsorbed on Pt electrode. The blue shifts ofRaman peaks demonstrate the size quantization effect for the particles of 50 nm in diameter ascompared with the bulk material. With the changing of the potential , the photocurrent decrcases as theUV-VIS reflectance increases, and vice-versa. Therefore, the potential not only affects the hargetransfer direcdtion in the interface of electrede/redox couple, but also influences the light absortion onthe surface of particles.According to the results of photoelectrochemistry, we suggest that the cathedicphotocurrent in the potential range of more than negative 270 mV arises from a reduction process ofthe photo-induced oxidation product on the platinum substrate electrixle and the anodic one in the rangeof more than positive 270 mV, and arises from a directly photo-induced oxidation process on thesurface of partiles.

用拉曼光谱、光电流、紫外-可见反射谱等技术研究了附着在铂片表面的α-Fe_2O_3微粒.拉曼光谱的蓝移现象说明50nm粒径的粒子较块体材料有尺寸量子化效应.随着电极电势的变化,光电流增加时,UV-VIS反射率相对变化量减少;光电流减少,UV-VIS反射率相对变化量则增大,说明电极电势不仅影响溶液氧化-还原对的氧化还原趋势,而且还影响微粒表面的光吸收.

The corrosion factors affecting melted monocomponent phosphate including orthophosphate mono-H sodium (Na 2HPO 4),orthophosphate sodium(Na 3PO 4),orthophosphate potassium(K 3PO 4)and mixed phosphate attacking on silicate glass are studied by using spectrophotometer, polarizing microscope, IRRS, SEM-EDX and other instruments. The results show that when the temperature is high than 140℃, the mixed phosphates attack silicate glass more strongly than monocomponent phosphate and the frosted glass can be obtained...

The corrosion factors affecting melted monocomponent phosphate including orthophosphate mono-H sodium (Na 2HPO 4),orthophosphate sodium(Na 3PO 4),orthophosphate potassium(K 3PO 4)and mixed phosphate attacking on silicate glass are studied by using spectrophotometer, polarizing microscope, IRRS, SEM-EDX and other instruments. The results show that when the temperature is high than 140℃, the mixed phosphates attack silicate glass more strongly than monocomponent phosphate and the frosted glass can be obtained after corrosion by mixed phosphate.

采用分光光度计、偏光显微镜、红外反射谱、扫描电镜和能谱仪研究了磷酸氢二钠、磷酸钠、磷酸钾及混合磷酸盐对硅酸盐玻璃的侵蚀 ,对影响侵蚀的因素作了探讨。结果表明 ,达到 1 40℃以上 ,随侵蚀时间的增加 ,玻璃受侵蚀程度加剧 ,混合磷酸盐对玻璃侵蚀严重 ,可得到蒙砂玻璃

 
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