共搜索到5614条信息，每页显示10条信息，共562页。用时：0小时0分0秒424毫秒
; 文章编号:1672-7207(2012)01-0038-08 Ions distributional characteristics of wet precipitation in typical acid rain areas of China XIANG Ren-jun1, 2, CHAI Li-yuan1, ZHANG Qing-mei2, XIAO... monitoring data of the three catchments, i.e., Caijiatang, Leigongshan and Tieshanping in typical acid areas of China, the chemical compositions characteristics of wet precipitation were studied......
......
to form Al(OH)3(s). Another means of decomposition of is by proton (H+) assisted precipitation such as acid neutralization. Carbonisation decomposition is another example of chemical decomposition... to form nuclei. Once the nuclei form, they promote further precipitation of aluminium hydroxide from the solution. This may be categorized as heterogeneous nucleation assisted by some foreign ions......
Structure and electrochemical properties of LiLaxMn2-xO4 cathode material by the ultrasonic-assisted sol-gel methodTing-feng Yi1) ,Yan-rong Zhu1) ,and Xin-guo Hu2) 1) School of Chemistry and Chemical...">Powders of spinel LiLaxMn2-xO4 were successfully synthesized by the ultrasonic-assisted sol-gel(UASG) method. The structure and properties of LiLaxMn2-xO4 were examined by X-ray diffraction(XRD......
Dynamic recrystallization and precipitation in high manganese austenitic stainless steel during hot compressionShahab Kazemi2,Golam Ebrahimi3,Alireza Maldar32. Department of Materials Engineering... and precipitation in a high manganese austenitic stainless steel were investigated by hot compression tests over temperatures of 950-1150°C at strain rates of 0.001 s-1-1 s-1.All the flow curves within......
Carbide Precipitation in Ferrite in Nb–V-Bearing Low-Carbon Steel During Isothermal Quenching ProcessXiao-Lin Li,Cheng-Shuai Lei,Xiang-Tao Deng,Yan-Mei Li,Yong Tian,Zhao-Dong Wang,Guo-Dong WangState Key Laboratory of Rolling and Automation,Northeastern University摘 要:The precipitation behavior of nanometer-sized carbides in ferrite in Nb–V-bearing low......
Precipitation Behavior of Nb in Steel under Ultra Fast Cooling Conditions周晓光,WANG Meng,LIU Zhenyu,YANG Hao,WU Di,WANG GuodongThe State Key Laboratory of Rolling Technology and Automation..., combining with metallographic analysis, different phase zones were determined. Also, precipitation behavior of Nb at different phase zones was investigated under ultra fast cooling conditions......
中碳铌微合金钢的应变诱导析出行为赵英利1,2,时捷2,刘苏2,谢刚-1(1.云南省昆明市昆明理工大学材料与冶金工程学院2.北京市钢铁研究总院结构材料研究所)摘 要:通过应力松弛法验证了修正后的DS析出模型,得到了中碳铌微合金钢的应变诱导析出规律,结果表明:修改后的DS模型由于考虑了Si,Mn元素对碳氮化物应变诱导析出的影响,得到的PTT曲线与试验测得的曲线基本吻合,可用于Si,Mn含量较高的铌微合金钢应变诱导析出行为的预测;对于本试验用钢,PTT曲线具有典型的"C"型特征,鼻子温度在900℃左右,并且,随着应变......
......
Preparation of large particle rare earth oxides by precipitation with oxalic acid柳召刚,李梅,胡艳宏,王觅堂,史振学摘 要:The large particle CeO2 and Y2O3 were prepared using oxalic acid as precipitator. The effects of operational parameters such as stirring velocity, precipitation temperature, feeding speed, aging time, precipitation method, and calcination temperature......
