材料期刊网

THE ACCURATE MOLECULAR FORMULA OF "Ti_(11)Ni_(14)" PHASE

C.L. Chu , G.J. Shen , S.D. Wang , B. Li , S.G. Zhang and Z.D. Yin(BOX 433 , School of Materials Science and Engineering , Harbin Institute of Technology , Harbin 150001 , China)(Analysis and Testing Center , Southeast University , Nanjing 210018 , China)(Research Institute of Electric Light Source Materials , Ministry of Light Industry , Nanjing 210015 , China)

金属学报(英文版)

From the orientation relationship between "Ti11Ni14" phase and matrix phase (B2),the accurate molecular formula of "Ti11N14" phase has been derived in this paper. The results also show that the rhombohedral unit cell of the "Ti11Ni14" phase includes six Ti atoms, seven Ni atoms and one vacancy, belonging to space group R3.

关键词: TiNi , null , null

Luoyang Institute of Refractories Research Ministry of Metallurgical Industry

ZHONG Xiangchong Luoyang Institute of Refractories Research , Luoyang , China.

材料科学技术（英文）

关键词:

THE STEEL INDUSTRY IN ARAB COUNTRIES

S.A. Al-Aghbari and Z. W. Lu Ministry of Oil & Mineral Resources , Republic of Yemen Thermal-Engineering Department , Northeastern University , Shenyang 110006 , China

金属学报(英文版)

A brief introduction to Arab countries, in respect of their locations, populations, areas and mineral resources, was given. The development of steel industry in Am6 countries in last two decades was staled as a whole. And the steel industries in Egypt, Qatar, Saudi Arabia, United Arch Emirates (UAE), Morocco, Libya, Joanal, Tunisia, Syria, Iraq, Algeria and Bahrain were analyzed separately. Some development problems faced by Arab steel industry, such as steel market, natural resources, manpower and finance, were pointed out.

关键词: steel industry , null , null

ADVANCED SYNTHESIS OF LIGHT METALS

F.H. Froes(IMAP , University of Idaho , Moscow , ID 838443026 , USA Manuscript received 26 August 1996)

金属学报(英文版)

The synthesis, processing and mechanical properties of the light metals, aluminum,magnesium and titanium Produced by advanced techniques are reviewed. Synthesis techniques to be addressed will include rapid solidification, spray deposition, mechanical alloying, plasma Processing and vapor deposition.

关键词: :synthesis/processing , null , null , null , null , null , null , null , null , null , null

Treatment of Reused Comprehensive Wastewater in Iron and Steel Industry With Electrosorption Technology

ZHANG Yunhua , GAN Fuxing , LI Meng , WANG Dihua , HUANG Zhongmai , GAO Yunpeng

钢铁研究学报(英文版)

Electrosorption technology was used to treat the reused comprehensive wastewater from iron and steel industry. A problem of relatively high conductivity of wastewater which greatly affects the reuse was examined, and industrial test was conducted for the reused water advanced deionization and purification in a comprehensive wastewater treatment plant of WISCO [Wuhan Iron and Steel (Group) Corporation]. The results of the onsite industrial test showed a satisfactory treatment performance for the reused water even at a flow rate of 1000 L/h in a standard 500 L/h unit. The average conductivity decreased by about 70%, from 580-780 μS/cm to 100-350 μS/cm. The average removal efficiency of Cl- and Ca2+ was about 75% and 68%, respectively, and CODCr of the treated water was also reduced in some degree while the pH value was almost unchanged. The energy consumption was as low as 06 kWh/t, which was remarkably superior to the conventional technologies. Therefore, it is entirely feasible that the novel electrosorption technology can be used in enhanced desalination and purification treatment of reused comprehensive wastewater in iron and steel industry.

关键词: electrosorption , desalination , purification , conductivity , industrial reused water

Ultraviolet light emission from oxidized porous silicon

Solid State Communications

Ultraviolet light emission with wavelength of 360-370 nm has been observed from porous silicon ( PS) samples properly oxidized at high temperature. The intensity rather than the peak location of ultraviolet light varies with anodization conditions and the oxidation temperature. Both thermal treatment in nitrogen and oxidation at 1150 degrees C can severely reduce the intensity of ultraviolet light, but the effect of the latter is stronger than that of the former. It is concluded that both the nanoscale silicon particles and the luminescence centers in Si oxide layers covering them play the key role in the ultraviolet light emission from PS.

关键词: visible luminescence;photoluminescence;mechanism;si

Nitrogen-doped titania nanosheets towards visible light response

Chemical Communications

Nitrogen-doped titania nanosheets with visible light response were synthesized by exfoliating a layered titanate with homogeneous nitrogen doping

关键词: photocatalytic activity;manganese oxide;tio2 photocatalysts;layers;films

STABLE BLUE-LIGHT EMISSION FROM OXIDIZED POROUS SILICON

Journal of Physics-Condensed Matter

We have achieved production of porous silicon (PS) that emits blue light at a peak wavelength of 460 nm. On storing it in air for three months, or illuminating it with the 365 nm line of a uv lamp, its photoluminescence intensity and peak wavelength remain stable. With Fourier-transform infrared (MR) measurements, we have studied the surface chemical bonds of the PS emitting blue light, and compared its FTIR spectrum with those of the as-prepared PS emitting red-orange light, and those of the processed PS emitting no light. We consider that the blue light emission originates from the SiO(x) layers covering nanoscale silicon units in PS.

关键词: photoluminescence

Emission Mitigation of CO2 in Steel Industry: Current Status and Future Scenarios

HU Changqing , CHEN Liyun , ZHANG Chunxia , QI Yuanhong , YIN Ruiyu

钢铁研究学报(英文版)

The sustainable development against global warming is a challenge faced by societies at global level. For steel industry, the pressure of reducing CO2 emission is likely to last many years. During the past decades, the CO2 emission per ton steel has been reduced mainly due to the improvement of energy efficiency. Entering the 21st century, the steel manufacturing route must have three functions, namely, production of high performance steel products, conversion of energy, and treatment of waste. In the near future, it is expected that existing BFBOF and EAF routes will be improved, in order to produce high performance steels, increase the use of scrap, and integrate steel industry with other industries for mitigating CO2 emission. In the long term, using carbonfree energy, reducing agents, and storing CO2 securely or converting CO2 into a harmless substance can be presumed for tremendous reduction in CO2 emission.

关键词: global warming;CO2 emission;steel industry;emission mitigation

Role of the dielectric capping layer in enhancement of light outcoupling for semitransparent metal-cathode organic light-emitting devices

Journal of Optics a-Pure and Applied Optics

We study theoretically the effects of the dielectric capping layer on the light outcoupling efficiency for semitransparent metal-cathode organic light-emitting devices. The outcoupling enhancement is co-determined by the improved transmission, the reduced (or improved) reflection, and the reduced absorption, as well as the suppressed surface plasmon polaritons. For some metals such as aluminium, the outcoupling efficiency can be enhanced largely by capping, but it can hardly be enhanced for some metals such as ytterbium. As a practical cathode, the Ag(15 nm)/TeO2(24 nm) combination achieves an outcoupling efficiency of 21.5%, competitive with bottom-emission devices.

关键词: light outcoupling;organic light-emitting device;surface plasmon;optics of metal;spontaneous emission;efficiency;diodes;microcavities;extraction;anode