ErYb:ZBLAN非晶中Er3+离子的光谱参数计算

由测量的ErYb:ZBLAN非晶的吸收光谱,计算了Er3 在ErYb:ZBLAN非晶中的强度参量Ωλ.并由此计算了激光能级的振子强度、自发辐射跃迁速率、荧光分支比和积分发射截面.     

特大深基坑自凝灰浆挡水帷幕技术

自凝灰浆是性能良好的柔性防渗墙材料.结合目前国内最大的圆形深基坑-武汉阳逻长江公路大桥南锚碇基坑工程,介绍了自凝灰浆的组成、防渗墙施工工艺和施工检测技术.     

Tensile properties and fracture reliability of a glass-coated Co-based amorphous microwire

Co_68.15Fe_4.35Si_12.25B_15.25 (at%) amorphous microwires with a smooth surface and a circular cross-section were fabricated by the glass-coated melt spinning method. Their mechanical properties were evaluated through tensile tests of the glass-coated amorphous microwires, and their fracture reliability was estimated using two- and three-parameter Weibull analysis. X-ray diffraction and transmission electron microscopy results showed that these glass-coated Co-based microwires were mostly amorphous. The coated Co-based microwires exhibit a tensile strength of 1145 to 2457 MPa, with a mean value of 1727 MPa and a variance of 445 MPa. Weibull statistical analysis showed that the tensile two-parameter Weibull modulus of the amorphous microwires is 4.16 and the three-parameter Weibull modulus is 1.61 with a threshold value as high as 942 MPa. These results indicate that the fabricated microwires exhibit good tensile properties and fracture reliability, and thus appear to be good candidates for electronics reliability engineering applications.     

节能型热通道智能光伏幕墙控制系统设计及应用

提出了一种节能型热通道智能光伏幕墙的光伏建筑一体化构想,结合双层玻璃幕墙热通道气流隔热和光伏电池发电的功能优势。介绍了节能型智能幕墙系统的构成特点和工作原理,并应用于智能控制系统及其电路设计。     

典型玻璃材料冲击力学性能研究

运用分离式霍普金森压杆技术,研究浮法玻璃和钢化玻璃在冲击条件下的σ-ε关系.通过对两种玻璃进行低速冲击实验表明:浮法玻璃的冲击力学性能与传统陶瓷材料基本一致,而钢化玻璃除表现出传统脆性材料的弹性性能外,还进一步表现出金属材料的塑性屈服特性;在冲击破碎形态上,钢化玻璃和浮法玻璃差别显著,钢化玻璃呈颗粒状,而浮法玻璃呈细粉状.由此可见,经淬冷处理后,钢化玻璃的冲击力学性能比浮法玻璃有显著提高.     

废液晶屏玻璃基板浮选分离与微晶化利用

针对废液晶屏玻璃基板分离困难与后续资源化利用的问题 ,提出热处理-浮选高效分离玻璃颗粒,后进一步采用烧结法制备微晶玻璃材料。发现当热处理温度为200℃时,液晶屏释放气态挥发物较少,同时热处理后浮选效率达到了93%。将得到的高纯度玻璃基板颗粒和普通废玻璃作为原料制备微晶玻璃,在最佳原料配比(废液晶显示屏玻璃基板30%,废玻璃26%),烧结温度1140℃,时间120 min条件下,烧结出的微晶玻璃具有致密度高、抗弯强度好、耐侵蚀性强的特点。     

综合智能温度控制策略在泡沫玻璃生产中的应用

通过对泡沫玻璃生产窑炉工作机理及温度控制系统的分析,提出了一种综合智能控制方案:首先利用人工神经网络对泡沫玻璃生产窑炉进行建模,再利用遗传算法对神经网络的权值和阈值进行优化,然后将此模型作为一个预估模型投入到控制系统中去.在控制器的设计过程中,不再使用单一的控制策略,而是在生产过程中根据坯料温度的输出误差大小来随时改变控制器的结构,从而达到对泡沫玻璃窑炉生产状态的最佳控制.     

分光光度法测一次性纸杯浸泡液中残留甲醛的含量

一次性纸杯是人们生活的日常用品.纸杯的日常制作工艺中,甲醛及其衍生物脲-甲醛,三聚氰氨甲醛树脂,酚醛树脂等作为交联剂广泛使用.交联剂在高温条件下可能释放出甲醛气体,对人类的健康构成威胁.用乙酰丙酮分光光度法测一次性纸杯中的甲醛.结果表明甲醛的线形范围0.024～3.4ug/ml,检出限0.020ug/ml,相关系数为0.9988,实验测得样品的标准偏差为2.04%,精密度良好,加标回收率为97.8%～103.0%,实验结果表明该法具有操作简单,重现性好,灵敏度高,选择性好等优点.     

玻镁风管在防排烟系统中的应用和推广

调查研究了玻镁复合风管的优点、不足、生产现状、质量水平、应用现状及存在的技术问题,分析了玻镁风管与其他风管相比的优势,总结了玻镁风管的制作安装要求,结合实例说明了玻镁风管在防排烟系统中应用、推广的必要性。     

Preparation and properties of AZO thin films on different substrates

Al doped ZnO (AZO) films were deposited on glass, polyethylene naphthalate (P EN) and polyethylene terephthalate (PET) at room temperature by radio frequency magnetron sputtering. The structural, surface morphology, electrical and optical properties of the AZO films were characterized by X-ray diffractometry (XRD), atomic force microscopy (AFM), Hall effect measurement and ultraviolet-visible spectrometer, respectively. The films exhibit highly c-axis preferred orientation, a nd AZO film on glass exhibits compressive stress while that on plastic subs trates presents tensile stress. The electr ical property of the AZO film on glass is the best among the films on three kinds of substrates. The value of the figure of merit for the AZO film on PEN is much better than that of the AZO film on PET and is close to that of AZO on glass in the wavelength range of 500? 900 nm.