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:The diversity of microstructure and properties of 830 MPa grade pipeline steel containing chromium was investigated by optical microscope and transmission... strength improved with increasing chromium content. The toughness and elongation decreased at the same time, so temper process was introduced. Appling proper temper parameters, the values of toughness......
收稿日期:1998-10-14 基金:国家八五科技攻关项目! 85- 10 5- 0 3- 0 1- 0 1; Phases of residue in distillation of BiCl3-HCl-H2O system Abstract: The residue phase in the process of distillation of BiCl 3 HCl H 2O system were studied in detail. Experimental results showed that the residue phase were distinctive at different temperature, namely BiCl 3 and BiCl 3·xHCl......
Creep and creep-fatigue behavior of high chromium steel weldmentYukio TAKAHASHI1,Masaaki TABUCHI21. Materials Science Laboratory,Central Research Institute of Electric Power Industry2. National Institute of Material Sciences摘 要:Strength of welded joints of high chromium steels is one of the important concerns for fabricators and operators of ultra......
Toxic Effects of Lanthanum, Cerium, Chromium and Zinc on Potamogeton Malaianus SHI Guoxin1,XU Qinsong1,Wang Chuntao1,Wang Xue1 (1.College of Life Science, Nanjing Normal University, Nanjing 210097, China) Abstract:The toxic effects of rare earth elements such as lanthanum, cerium and heavy metal elements such as chromium, zinc on Potamogeton malaianus Miq. were studied. The results show......
Improvement in varistor properties of CaCu3Ti4O12 ceramics by chromium additionEdson Cezar Grzebielucka1,Jo?o Frederico Haas Leandro Monteiro1,Eder Carlos Ferreira de Souza1,Christiane Philippini...">The effect of chromium addition on the structure and electrical properties of CaCu3Ti4O12 is studied.Compositions based on the formula CaCu3Ti4-xCrxO12-σ(x = 0, 0.025, 0.050 and 0.075 mol%) are prepared......
molecular mass. Key words: decolorization; anthraquinone dye; ozone; residue ... of reactive brilliant blue X-BR contains organic residues No.5 and 6, direct fast blue B2RL contains organic residue No.7, and cationic blue FGL also contains No.6 and 8, and naphthalin ring. In addition......
Optimisation of Bio-polyol Production from Cassava Residue Using Ethylene Glycol as the Liquefaction Reagent康佳清,CHEN Wei,YAO Yuan,靳艳巧,CHENG Xiansu,Lü QiufengKey Laboratory of Eco-materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University摘 要:Cassava residue was liquefied by using ethylene glycol(EG), ethylene carbonate......
EFFECT OF THE EXISTING STATES OF CHROMIUM ION ON THE COLOR CHARACTERISTICS OF DOPED β-C2S冯修吉,阎培玉摘 要:<正> According to the theory of crystal field, theexisting state of chromium ions in β-C2S was studiedwith optical spectra and EPR. The energy levels ofchromium ions were calculated. Chromium ions existin form of Cr4+ and Cr5+ coordinated......
Leaching of lead from zinc leach residue in acidic calcium chloride aqueous solutionLe Wang1,Wen-ning Mu2,Hong-tao Shen2,Shao-ming Liu1,Yu-chun Zhai11. School of Materials and Metallurgy... and occupational hazards of lead-bearing zinc plant residue was studied to achieve a higher recovery of lead via a cost-effective and environmentally friendly process. This paper describes an optimization......
Preparation and Properties of Ultra-fine Chromium Carbonization of High Performance Mechanical Activation田磊1,2,CHEN Lijie1,张廷安2,Lü Guozhi2,LIU Yan2,ZHANG Ying21. School of Metallurgical and Chemical..." name="ChDivSummary">The preparation of hydroxyl chromium oxide by hydrogen reduction of disodium chromate and particulate hydroxyl mechanical activation features were studied. Then with self-made......
