Method and device for the manufacture of alloys of elements of transition metals and of the rare earth group for the production of materials for permanent magnetsHABERER, JEAN-PAUL, ST. MARTIN D'HERESFONTAINE, ROGER NOEL, MONTBONNOT
化学里的元素(element)基本可以分成 metal(金属) 与 nonmetal (非金属) 两类,金属元素又有一系列特别的 transition metals(过渡金属)。周期表上金属与非金属交界处又有着一系列具有特殊性质的元素,被称为 metalloid(准金属) 或 semimetal(半金属X。 以下是几种常见元素信息名称的中英对照: 原子序数 - Atomic Numb...
periodictable.Thepropertiesofmetalloidsarein-betweenmetalsandnonmetals:metalloidsoftenbehave chemicallylikenon-metals,butarelustrouslikemetals. 6)ThegroupAelements(IA,IIA,IIIA,etc.)aresometimescalledcollectivelytherepresentativeormain-group elements. 7)ThegroupBelementsarecalledthetransitionmetals. TheElementsinNat...
Transition metalsAir pollutionPlantsTajikistanAccording to several reports, the presence of transition metal elements in the atmosphere was associated with adverse health effects. The purpose of this investigation was to analyze the presence of transition metal particles with atomic numbers 22鈥 29 on ...
Multiple bonds between transition metals and main-group elements. 73. Synthetic routes to rhenium(V) alkyl and rhenium(VII) alkylidyne complexes. X-ray crystal structures of (.eta.5-C5Me5)Re(:O) (CH3)[CH2C(CH3)3] and (.eta.5-C5Me5)(Br)3Re.tplbond.CC(CH3)3 ...
A series of β-γ Ti-44Al-8Nb-0.2B-0.2Y alloys have been modified with 0.5 to 2.0 at.% of the β-stabilizing elements Mn, Cr, Mo and V. Additions of Cr and Mo alone result in a decrease in the flow stress, whereas the opposite effect was observed for additions of V. For al...
In the mid-1990s, the first examples of complexes containing triple bonds between transition metals and heavier analogues of the carbon as well as the nitrogen groups were reported, thus signaling the beginning of a new era in organometallic chemistry. Since then the progress in this field has ...
Alkaline Earth Metals Transition Metals Other Metals Non-Metals Halogens Noble Gases Lanthanide Rare Earth Actinide Rare Earth And if you’re curious about which elements people are researching, there’s a list of the top eight trending elements each week. View the XPS periodic table. Share this...
Transition metal-catalyzed dehydrocoupling of group 13-group 15 Lewis acid–base adducts early and late transition metals and complexes thereof to yield rings, chains and macromolecules based on a framework of alternating B–N or B–P atoms... TJ Clark,I Manners - 《Journal of Organometallic Ch...
the titanium dioxide powder is formed of an additional energy level caused by the transition metals doped in the energy band gap It provides titanium dioxide powder produced bangbeopreul comprising.; The titanium dioxide powder obtained by the production method of the present invention is a particle...