共搜索到23655条信息,每页显示10条信息,共2366页。用时:0小时0分0秒505毫秒
. The experimental results show that proper amount of rare earth elements can desulfurate, dehydrogenate, reduce inclusions and purify the structure of the welding seam. Rare earth element additions... earth element additions is about 2%. Key words:technology and equipment; welding rod; toughness; rare earths; [全文内容正在添加中] ......
, which is concerned with the addition of rare earth element and the extent of solid solution of ceramic phases. Key words:alumina; ceramic composite; microstructure; rare earths; [全文内容正在添加中] ...Study on Microstructure of Alumina Based Rare Earth Ceramic Composite Xu Chonghai1 (1.School of Mechanical Engineering, Shandong Institute of Light Industry, Jinan 250353, China) Abstract:Analysis......
(0.869×10-10m), and it usually coexists with lanthanide series in the nature. Therefore, Y, together with scandium, is also called rare earth element. In general, the partition of yttrium is above 10%, even up to 50% in some weathered crust ores such as Longnan ore. Y is regarded a heavy rare earth element because its properties and radium are similar to those of heavy ones, which is also supported......
......
ARTICLE J. Cent. South Univ. (2019) 26: 458-466 DOI: https://doi.org/10.1007/s11771-019-4018-6 Recovery of iron and rare earth elements from red mud through an acid leaching-stepwise extraction..., China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: A feasible approach to selectively recover iron and rare earth elements (REEs) from red mud......
Rare earth elements in tropical surface water, soil and sediments of the Terengganu River Basin, Malaysia Noor Azhar Shazili1,Khawar Sultan1 (1.Institute of Oceanography,University Malaysia Terengganu,Mengabang Telipot,21030 Kuala Terengganu,Terengganu,Malaysia) Abstract:The 14 stable rare earth element (REE) concentrations and distribution patterns were investigated for surface waters (n=51......
Effect of trace rare earth element Er on Al-Zn-Mg alloy XU Guo-fu(徐国富)1, MOU Shen-zhou(牟申周)1, YANG Jun-jun(杨军军)2, JIN Tou-nan(金头男)3, NIE Zuo-ren(聂祚仁)3, YIN Zhi-min(尹志民)1 1. School of Materials... on their metamorphism and the application of misch metal to aluminium alloys[4,5]. The action mechanism of single rare earth element in aluninium alloys is scarcely studied and the only study is restricted......
series of rare earth element complexes with IMDA for the anion-exchangers, purification of macroquantities of Nd3+ from Y3+, Sm3+ from Ho3+, La3+ from Nd3+ and La3+ from Pr3+ on the weakly basic gel...Investigation on the Use of the Weakly Basic Polyacrylate Anion-Exchanger Amberlite IRA-68 for Sorption and Separation of Iminodiacetate Complexes of Rare Earth Elements Halina Hubicka1,Dorota......
; element, calcium, has some positive effects, such as improvement of oxide film property and prevention of further corrosion, on magnesium alloys besides rare earth elements. Nevertheless... Effect of combinative addition of strontium and rare earth elements on corrosion resistance of AZ91D magnesium alloy NIU Jie-xin(钮洁欣), CHEN Qiu-rong(陈秋荣), XU Nai-xin(徐乃欣), WEI......
Examination of Sarikaya(Yozgat-Turkey) iron mineralization with rare earth element(REE) methodNursel OKSUZ1,Sukru KOC21. Department of Geological Engineering,Faculty of Engineering & Architecture... mineralizations in Sarikaya were examined in terms of rare earth element(REE) contents and attempts were made to determine some physicochemical conditions that had an impact upon their formation.For......