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RESEARCH AND DEVELOPMENT OF NEW SUPERALLOY REMELTING PROCES W.Xie1 (1.Baosteel Group Shanghai No.5 Steel Co., Ltd., Shanghai 200940, China) Abstract:Shanghai No.5 Steel Co., Ltd.has recently introduced a set of 5-ton protective atmosphere electroslag remelting furnace and a set of 10-ton helium-cooling vacuum arc remelting furnace,both of them are the first one of its kind in China.With......
Mineralogical Research of the Bayan-Obo Rare Earth-Niobium-Iron Ore Deposit张培善摘 要:<正> Bayan-Obo ore diposit is known as a superlarge rare earth-niobium-polymetallic-iron ore deposit in theworld today.A great many of mineral species were found there,and the complicated metallogenic conditionswere defined.The ore deposit occurs in the Proterozoic......
Research on photodarkening in rare earth doped fibers成煜State Key Laboratory of Optical Fibre and Cable Manufacture Technology,R&D Centre,Yangtze Optical Fibre and Cable Company Ltd.摘 要:Samarium doped aluminosilicate fiber was fabricated by modified chemical vapor deposition (MCVD) process.The optical properties of this fiber were characterized by white......
Research on elevated temperature deformation behavior of Ti-6Al-4V sheetsSUN Shengdi, GUO Bin, SHAN Debin, and ZHONG Yingying School of Materials Science & Engineering, Harbin Institute of Technology, Harbin 150001, China摘 要:Hot deformation behaviors were studied by means of scanning electron microscopy (SEM) and uniaxial thermal tension. The effect......
RESEARCH ON A NEW TYPE OF MACHINABLE BIOACTIVE GLASS-CERAMICS岳文海,陈仝摘 要:<正> A new type of machinable bioactive glass-ceramicsfor bone substitution has been developed in the glasssystem SiO2-MgO-K2O-F--CaO-P2O5, which contains Mg-muscovite [K2Mg5 (Si8O20) F4] and fluorapatite as thetwo main crystal phases. The phase separation andthe crystallization......
RESEARCH ON CATIONIC POLYMER WATER BASE DRILLING FLUIDS刘雨晴摘 要:<正> Cationic polymer drilling fluid (CPDF) is a new water base drilling fluid in which high molecular weight (HMW) cationic polymer (CPAM) is an encapsulating and flocculating agent and organic quaternary ammonium compound (AW-1) acts as shale inhibitor. This paper describes......
Research on Hydration of Steel Slag Cement Activatedwith Waterglass胡曙光摘 要:This paper studied the hydration and strength influence factors of Steel Slag Cement (SSC), such as the quantity of steel slag and slag and the dosage of additive. The results show that: (a) In the process of hydration of SSC,steel slag and slag activate each other; (b) Waterglass......
Preliminary Research on Strueture and Properties of Nano-cellulose孙东平摘 要:<正>The structure of bacterial cellulose(BC)produced by Acetobacter xylinum NUST4(A.xylinum NUST4)under static(SBC)and shake culture condition(ABC)was studied by means of transmission electron microscopic(TEM),X-ray diffraction(XRD)and Fourier transform-infrared spectrum(FT-IR......
Research on K-V-rare Earth Metal Catalysts for Diesel Soot Oxidation王永涛,隋丽娜,KANG Hongquan,YU LiyanCollege of Materials Science and Engineering,Qingdao University of Science and Technology摘 要:Five types of KNO3-NH4VO3-rare earth metal nitrate(K-V-rare earth metal) catalysts supported on a-porous alumina ceramic substrates were prepared by a coating......
Research on photodarkening in rare earth doped fibers成煜State Key Laboratory of Optical Fibre and Cable Manufacture Technology,R&D Centre,Yangtze Optical Fibre and Cable Company Ltd.摘 要:Samarium doped aluminosilicate fiber was fabricated by modified chemical vapor deposition (MCVD) process.The optical properties of this fiber were characterized by white......
