A new type of rare earth elements deposit in weathering crust of Permian basalt in western Guizhou, NW China

2008 ◽  
Vol 26 (5) ◽  
pp. 753-759 ◽  
Author(s):  
Ruidong YANG ◽  
Wei WANG ◽  
Xiaodong ZHANG ◽  
Ling LIU ◽  
Huairui WEI ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Weathering Crust ◽  
Nw China ◽  
New Type ◽  
Western Guizhou

New type of coordination polyhedron for rare earth elements. The structure of the acetylacetoniminate of tris(acetylacetonato)ytterbium

1970 ◽  
Vol 11 (2) ◽  
pp. 289-290 ◽  
Author(s):  
E. F. Korytnyi ◽  
L. A. Aslanov ◽  
M. A. Porai-Koshits ◽  
O. M. Petrukhin
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Coordination Polyhedron ◽  
New Type

The simulation for a new nanomagnetic setback generator

2011 ◽  
Vol 225 (4) ◽  
pp. 177-180
Author(s):  
Yue Fu ◽  
Wen-zhong Lou ◽  
Long-fei Zhang
Keyword(s):  
Magnetic Material ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Electromotive Force ◽  
Lower Cost ◽  
Obvious Advantage ◽  
New Type ◽  
Better Than

Applications of nanomaterials will become the leading technology during the next decades of this century. The composite nanomagnet, which has better features, lower cost and is less demanding of rare earth elements, is a new type of permanent magnetic material. It has become one of the important developments of the nanomagnet generator. In this paper, we apply this nanomagnet in a magnetic setback generator and simulate its electromotive force using COMSOL Multiphysic, comparing it with traditional generators. We find it is better than the traditional option in performance, with obvious advantage in respect of cost.

scholarly journals Rare Earth Elements Enhanced the Oxidation Resistance of Mo-Si-Based Alloys for High Temperature Application: A Review

2021 ◽  
Author(s):  
Laihao Yu ◽  
Yingyi Zhang ◽  
Tao Fu ◽  
Jie Wang ◽  
Kunkun Cui ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Rare Earth Elements ◽  
Oxidation Behavior ◽  
Strengthening Mechanism ◽  
Advanced Materials ◽  
Performance Requirements ◽  
Large Numbers ◽  
High Temperature Structural Material ◽  
New Type

Traditional refractory materials such as nickel-based superalloys have been gradually unable to meet the performance requirements of advanced materials. The Mo-Si-based alloy, as a new type of high temperature structural material, has entered the vision of researchers due to its charming high temperature performance characteristics. However, its easy oxidation and even "pesting oxidation" at medium temperatures limit its further applications. In order to solve this problem, researchers have conducted large numbers of experiments and made breakthrough achievements. Based on these research results, the effects of rare earth elements like La, Hf, Ce and Y on the microstructure and oxidation behavior of Mo-Si-based alloys were systematically reviewed in the current work. Meanwhile, this paper also provided an analysis about the strengthening mechanism of rare earth elements on the oxidation behavior for Mo-Si-based alloys after discussing the oxidation process. Furthermore, the research focus about the oxidation protection of Mo-Si-based alloys in the future was prospected to expand the application field.

Rare earth elements in self-shielded flux-cored wires and their effect on the weld toughing of U75V rail steel

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040054
Author(s):  
Jia Chen ◽  
Jiafan Ye ◽  
Guoqing Gou ◽  
Wei Gao
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
High Efficiency ◽  
Rail Steel ◽  
Cored Wire ◽  
New Type ◽  
High Alkalinity ◽  
Cored Wires ◽  
The Impact ◽  
Addition Amount

Self-shielded flux-cored wire is a new type of welding material that has the advantages of outdoor and high-efficiency application, and it has been used widely for rail repair. A self-shielded flux-cored wire with high alkalinity and rare earth elements was taken for research, and the microstructure, inclusions, hardness and the impact toughness were studied. Rare earth elements could eliminate the oxygen and sulfur when they were added into the molten pool. The addition amount has been optimized to the range of 4% in the self-shielded flux-cored wire when used for rail repairing.

scholarly journals Comportamento dos Elementos Terras Raras na Alteração Intempérica de Rochas Vulcânicas Ácidas no Sul do Brasil

1997 ◽  
Vol 24 (1-2) ◽  
pp. 59
Author(s):  
NELSON GASPARETTO ◽  
EGYDIO MENEGOTTO
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Volcanic Rocks ◽  
Weathering Crust ◽  
Acid Volcanic ◽  
The Absolute ◽  
Rock Minerals

This paper presents the result of a study of the behavior of Rare Earth Elements (REE) in the weathering of acid volcanic rocks (riolites) situated in the southern part of Brazil. Results show a clear loss of all REE in such conditions. The REE amounts decreases from the lower part to the top of the profile. The loss is progressive, increasing as the density become smaller. There are not differences in behavior between light and heavy REE. Little thickness of the weathering crust is the main responsible for the absence of the absolute accumulations in the lower part of the profile of the REE liberated by the rock-minerals decomposition and not fixed to new-formed minerals.

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