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in the continental arid and semi-arid climate zones with annual precipitation of 172.5 mm and an annual evapotranspiration rate of 1756.8 mm. Low rainfall and strong evaporation deteriorated the ecological... J. Cent. South Univ. (2020) 27: 3320-3333 DOI: https://doi.org/10.1007/s11771-020-4549-x Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy......
-stage precipitation process will 1) minimize the losses of valuable metals; 2) give the precipitate of iron and arsenic a high settling rate; 3) give the precipitate of iron and arsenic a high... Two-stage precipitation process of iron and arsenic from acid leaching solutions N. J. BOLIN, J. E. SUNDKVIST Boliden Mineral AB, SE-936 81 Boliden, SWEDEN Received 20 September......
of the alloy. By the higher uniformity and the better reproducibility, gas quenching offers a high potential to reduce distortion. The goal of these investigations is to clarify, if the cooling rate... nozzle fields and water quenching baths were performed. 关键词:aluminium; precipitation hardening; gas quenching; mechanical properties; [全文内容正在添加中] ......
–44. DOI: 10.1016/ j.hydromet.2009.03.014. [10] LIU Gui-hua, WU Guo-yu, CHEN Wei, LI Xiao-bin, PENG Zhi-hong, ZHOU Qiu-sheng, QI Tian-gui. Increasing precipitation rate from sodium aluminate solution... ARTICLE J. Cent. South Univ. (2019) 26: 312-322 DOI: https://doi.org/10.1007/s11771-019-4003-0 Intensifying gibbsite precipitation from sodium aluminate solution by adding a mixed seed LI Xiao-bin......
, Germany Received 17 October 2013; accepted 31 April 2014 Abstract: The precipitation behaviour during quenching of cast Al-7Si-0.3Mg aluminium alloy was investigated by DSC in the cooling rate range... and precipitates inside the aluminium dendrites, depending on quenching rate. Key words: cast aluminium alloy; Al-7Si-0.3Mg; quenching; continuous cooling; precipitation diagram; differential scanning......
reactor. It can be seen from Table 1 that a great number of fine particles disappear in 9 h when adding fine seed. Since the crystal growth rate is very small in the late period of seeded precipitation... Phenomena in late period of seeded precipitation of sodium aluminate solution LI Xiao-bin(李小斌), FENG Gang-tao(冯港涛), ZHOU Qiu-sheng(周秋生), PENG Zhi-hong(彭志宏), LIU Gui-hua(刘桂华) School......
the relationship between the peak stress and Zener-Hollomon parameter during hot deformation. The interaction between dynamic recrystallization and dynamic precipitation of V(C,N) at a low strain rate was analyzed. The results showed that precipitation particles size of weathering steel increased with increasing strain at deformation temperature 950℃ and strain rate 0.1 s-1. The calculation......
J. Cent. South Univ. (2016) 23: 2139-2145 DOI: 10.1007/s11771-016-3270-2 TiO2 preparation by improved homogeneous precipitation and application in SCR catalyst YAO Jie(姚杰)1, 2, ZHONG Zhao-ping(仲兆平)2..., China Central South University Press and Springer-Verlag Berlin Heidelberg 2016 Abstract: Ultrasonic treatment and hydrothermal method were applied in the traditional homogeneous precipitation......
on it, the growth rate of Ω phase is much smaller. As ageing time prolongs, precipitations on the {001}α are consumed by further precipitation of Ω phases. At that time, the solute concentration... Modeling of whole process of ageing precipitation and strengthening in Al-Cu-Mg-Ag alloys with high Cu-to-Mg mass ratio HOU Yan-hui(侯延辉)1, 2, 3, GU Yan-xia(谷艳霞)1, 2, LIU Zhi-yi (刘志义)1, 2, LI Yun......
Effect of cooling rate on microstructure and compressive performance of AZ91 magnesium alloy YANG Lin(杨 林), FENG Hui(冯 辉), QIU Ke-qiang(邱克强), CHEN Li-jia(陈立佳), LIU Zheng(刘 正) School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110023, China Received 28 July 2006; accepted 15 September 2006 Abstract: Effect of cooling rate on both microstructure and room......
