离子色谱法测定SO_4~(2-)标准溶液不确定度的评定

本文以硫酸根离子为例,通过在离子色谱仪上对标准曲线标定过程的分析,找出影响分析结果的各个分量进行不确定度的评定,并给出标准的表示法。     

锌电积阳极析出MnO2电流效率的探讨

分析了锌电积过程中阳极发生的主要反应，探讨了温度、锰离子浓度、电流密度、酸度等因素对阳极析出MnO2电流效率的影响。     

LG MT-50PZ41

韩国的LG公司，是目前为数不多的等离子显示屏器件制造及供应商之一。为了与日本各大电子公司抗衡，LG公司在等离子显示技术出现初期就积极参与，并投巨资进行了大量的研发工作及生产准备，所以当等离子显示器正式商品化进入市场后，大家除能看到日本松下、先锋等等离子显示技术倡导者的产品外，同时也能看到LG的产品。而据悉日本另外几家较有名的视频产品制造商反倒没有自行制造等离子显示屏器件．     

InP基应变补偿结构偏振不灵敏半导体光放大器制作的研究

为了制备偏振不灵敏的半导体光放大器(SOA)，将有源区设计为由4个压应变、3个张应变阱层及晶格匹配的垒层InGaAsP交替组合而成的应变补偿结构。器件做成带有倾角的扇形脊形波导结构，避免了常规制作SOA的复杂工艺。对样品3在80～125mA电流范围内，获得了偏振灵敏度≤0．6dB．最小可达0．1dB；较大的电流范围内FWHM值为40nm。     

Effect of Rare Earth Element Cerium on Mechanical Properties and Morphology of TiN Coating Prepared by Arc Ion Plating

TiN coatings were deposited on polished substrates of W18Cr4V high speed steel by means of vacuum arc ion plating. The effect of cerium on adhesion between TiN coating and substrate was studied. The microstructures and composition of TiN coatings were also investigated by means of scanning electron microscope (SEM), Auger electron spectroscopy (AES), and X-ray diffraction (XRD) technique. It was found that cerium is an effective modifying agent and the addition of suitable amount of cerium to TiN coatings can produce relatively excellent properties such as micro-hardness, wear resistance, oxidation resistance and porosity. The experimental results show that the added cerium in TiN coatings makesa contribution to form the preferred direction along with a (111 ) or (222) close packed face, which may be one of the reasons that improves some properties mentioned above.