氮化硅晶须的研究现状

介绍了晶须的生长机理、氮化硅晶须的制备方法以及影响其生长的因素。阐述了氮化硅晶须增强复合材料的现状,指出加强晶须的基础研究,改进制备技术和降低成本是今后的发展方向。     

纳米TiO2改性内墙涂料研究

主要研究了纳米TiO2的加入对内墙涂料性能的影响。结果表明,加入2%纳米TiO2能极大地提高涂料降解甲醛的能力,但加入4%纳米TiO2反而使涂料的性能变差。涂料的常规性能研究也表明,加入少于2%的纳米TiO2对涂料的常规性能会有极大的提高。     

氧气在浮法玻璃生产中的应用

介绍了国内某玻璃厂浮法玻璃熔窑使用氧气助燃的一次尝试,简介了其中底烧法的使用方法、过程和效果,列举了有待改进的内容。     

Effects of Cu,Bi, and In on microstructure and tensile properties of Sn-Ag-X(Cu,Bi, In) solders

Effects of minor additions of Cu, Bi, and In on microstructure, melting temperature, and tensile properties of Sn-Ag-based lead-free solders were investigated. It was found that the intermetallic compounds (IMCs) Ag₂In and Cu₆Sn₅ are formed in In- and Cu-containing solders, respectively. At low concentration, Bi dissolved in the Sn matrix and tended to precipitate pure Bi particles at the solubility limit of 4 wt pct Bi. The formation of large Ag₃Sn precipitates from the solder matrix was suppressed when alloying bismuth into the Sn-Ag alloy. The Bi addition resulted in a significant linear increase of the ultimate tensile strength (UTS) of solders, which is attributed to a solid-solution hardening mechanism. Solder strengthening due to In and Cu is less pronounced and attributed to a dispersion strengthening mechanism. The additions of Cu, Bi, and In all depressed the melting temperatures of Sn-Ag-based solders; however, In is the most effective one.     

Characterization of (Y,Gd) BxV1-xO4-x:Eu Phosphor Prepared by Coprecipitation Reaction

White body-color (Y, Gd)BxV1- xO4-x :Eu3 phosphors were prepared by coprecipitation reaction. Under VUV excitation at 147 nm, the red emission colorimetric purity of (Y, Gd)BxV1- xO4-x :Eu3 phosphor is much better than that of commercial PDP (plasma display panels) phosphor (Y, Gd)BO3:Eu3 . But its relative emission intensity is only about 90% of the commercial phosphor.     

Research on Poly （Styrene-Crylicacid）-Suported Neodymium Complex Catalytic Copolymerization of Styrene and 4-Vinylpyridine

Research on Poly(Styrene-Crylicacid)-Suported Neodymium Complex Catalytic Copolymerization of Styrene and 4-Vinylpyridine     

Antibacterial Characteristics of ZnO-CeO2 Nano-Powder Prepared by Laser Vapor Condensation

Microbialpollutionandcontaminationbymicroor ganismshaveproducedvarioustroublesinindustryandothervitalfields ,suchasdegradationandinfec tion .Thenewpasteurizationandantibacterialtech niqueshavebeendemandedandstudied[1] .Inrecentyears ,therareearthmetaloxid…     

浅淡高校校办产业的现状与发展

我国高校校办产业发展到今天,已有十几年的历史了,在这十几年里,高校产业利用自身的人才、技术、信息等优势,形成了科技成果转让的良性循环,它为学校的发展起到了相当重要的作用.特别是科技产业,以高新技术为依托,以市场为导向,实现教学、科研、生产相结合的模式,具有较强的竞争发展能力.有的企业已形成了一定规模,所生产的高科技产品在市场上具有一定的竞争能力.从目前看,高校科技产业在我国知识经济发展中,已经开始占据着越来越重要的地位.从学校的建设上看,科技产业是教育改革的产物,它的产生不仅给学校带来了直接的经济效益,更重要的是增强了学校的实力,加速了学科建设,提高了高校的学术科研水平,应该说,学校科技产业的发展对整个教育的发展起着不可忽视的作用.但在发展的同时,也相继出现了一些需要解决的问题,只有正确解决这些问题,高校企业才能健康有序的发展,才能创造出更大的社会效益和经济效益.     

工程图学课程的教学改革

工程图学是高职院校普遍开设的一门重要的技术基础课,目前工程实际中手工绘图耗时长,效率低、劳动强度大,绘图精度不容易保证,而计算机绘图则速度快、效率高、准确性好.因此已得到了普遍的运用,正因如此,在工程图学教学中"甩图板"的呼声此起彼伏.如何在教学中摆正二者的关系,已成为各个院校急待解决的问题.     

安钢高线品种开发的优势与实践

介绍了安钢高线的技术装备、工艺转化及创新，以及自投产以来的产品结构调整和重点产品的开发情况。