Fabricating Buffer Layers for YBa2Cu3Oy Coated Conductor by Surface Oxidation Epitaxy

Coated conductor of YBa2Cu3Oy(YBCO) withhighsuperconducting critical current (IC)is promisingfor many applications . To decrease weak link andlarge grain boundary angle it is i mportant to achievebiaxial textured YBCO.Sofar ,a fewtechniques havebeen appli…     

水泥企业推行经济责任制的初步经验

近年来,我国水泥行业推行经济责任制,起步不慢,初见成效,积累了一些值得重视的经验。各厂推行的经济责任制,形式尽管有所不同,方法也不完全一样,但都取得了明显的经济效益。根据实践体会,建立和完善经济责任制,必须注意解决好以下几个问题。一、立足于原有基础,从实际出发水泥企业建立和完善经济责任制,如同其它经营管理制度的改革一样,既不能凭空想象,也不能照抄别的行业,只能按照经济建设新时期提高经济效益,实行责、权、利统一和冲破平均主义、“大锅饭”的总要求,根据水泥行业的特点,在原有基础上,对过去的经营管理工作采取分析的态度,去掉落后的不合理的部分,肯定那些行之有效的好经验、好做法,制订出切合实际情     

射频溅射法在CeO2/YSZ/Y2O3/NiW衬底上制备YBCO超导层

用射频溅射的方法在强立方织构的CeO2/YSZ/Y2O3/NiW衬底上制备了YBCO超导层. 温度、气压等因素对超导层的外延生长有重要影响. 在基片温度大于780 ℃, 气压在11～160 Pa之间, 都有NiWO4化合物生成;在退火吸氧过程中, 金属基底被氧化. 最终在温度780 ℃, 气压100 Pa的条件下, 制备出了纯（00l）取向的YBCO薄膜, 其平面内φ扫描半高宽小于10°, 超导转变温度为87.2 K, 传导电流为11 A.     

MMD625分级破碎机的应用研究

对MMD破碎机的结构特点做了探讨，介绍了MMD625型分级破碎机的应用情况，并对由此引发的相关工艺的改进做了分析。     

浅谈虹吸式屋面雨水排放系统

本文阐述了重力排水系统和虹吸式屋面雨水排放系统的特点，介绍了虹吸排水系统雨水斗构造及设计计算方法，并着重对虹吸式屋面雨水排放系统的适用条件及设计要点进行概括和说明。     

Influence of Hot Rolling on Cube Texture of Ni Substrate for Coated Conductor

Pure Ni and Ni alloy tapes with sharp cube texture and low-angle grain boundaries prepared by thermomechanical process were extensively used as substrates for coated conductor. The thermomechanical process usually includes hot forging and cold rolling. In this study, a hot-rolling process between hot forging and cold rolling was induced. The influence of hot rolling on the cube texture of pure Ni was discussed. Sharp cube texture on pure Ni was obtained by suitable hot rolling, cold rolling, and recrystallization treatment. This deformation texture of tape was studied using orientation distribution function （ODF）. Orientation mapping, content of the cube texture, and grain boundary distribution were performed using an EBSD system mounted on LEO-1450 SEM. The results show that the substrates that are hot rolled have a sharp cube texture and low-angle grain boundaries.     

Fabrication of Y_2O_3 buffer layer on polished Ni substrates for YBCO superconducting tape

1IntroductionIn recent years,worldwide research efforts have been made to develop YBCOsuperconducting tapes.Two promising approaches for the profitable production of long YBCOtapes that are suitable for carryinghigh currents in magnetic fields are RABi TS(Rolling Assisted Biaxially Textured Substrates)[1]and IBAD(Ion Beam Assisted Deposition)methods[2].In RABi TS process,the necessarily strong biaxial texture ofthe YBCOfil mis achieved by epitaxial growth of buffer layers andthe …     

合成水处理工艺优化

费托合成水中含有重油,合成水处理单元脱油装置不能很好的分离重油,造成合成废水中的油含量和化学需氧量经常超标,给公司的污水处理工作造成一定压力。     

大闹玻陶工业的技术革命组织1960年的更大跃进

玻璃陶瓷工业战线,在比1958年更大的跃进中结束了1959年.现在,又在以比1959年更好的跃进姿态迎接1960年. 1959年,平板玻璃不但产量提高很多,而且创造了系统的生产经验,大大提高了生产技术水平;高级玻璃纤维经过设备定型和工艺定型,走上了正规化大工业生产的新阶段;工业技术玻璃除了生产钢化、磨光玻璃外,还突破了弯形全景玻璃的技术关,从而在一定程度上配合了汽车制造工业的发展;玻璃管由小量试生产进入了工业性大生产,解决了成型、退火、接头、弯头、安装等一系列的技术问题,部分     

利用高频筛及煤泥离心机回收粗煤泥的实践

成庄矿选煤厂采用高频筛加煤泥离心机代替原沉降过滤离心机回收粗煤泥 ,不但工艺简单 ,处理能力大 ,而且运行费用低 ,产品水分低 ,取得了很好的经济效益