Thiophene HDS on La-Modified CoMo/Al2O3 Sulfided Catalysts. Effect of Rare-Earth Content

2020 ◽  
Vol 63 (5-6) ◽  
pp. 529-545
Author(s):  
J. Escobar ◽  
J. Ramírez ◽  
R. Cuevas ◽  
C. Ángeles ◽  
M. C. Barrera ◽  
...  
Keyword(s):  
Rare Earth ◽  
Sulfided Catalysts ◽  
Thiophene Hds ◽  
Rare Earth Content

scholarly journals Magnetic Gears and Magnetically Geared Machines with Reduced Rare-Earth Elements for Vehicle Applications

2021 ◽  
Vol 12 (2) ◽  
pp. 52
Author(s):  
Ali Al-Qarni ◽  
Ayman EL-Refaie
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Permanent Magnet ◽  
Electric Vehicles ◽  
Scaling Up ◽  
Electrical Machines ◽  
Mechanical Structure ◽  
Physical Isolation ◽  
Rotational Components ◽  
Rare Earth Content

This paper covers a new emerging class of electrical machines, namely, Magnetic Gears (MGs) and Magnetically Geared Machines (MGMs). This particular kind of gears/machines is capable of either scaling up or down the revolutions-per-minute to meet various load profiles as in the case of mechanical gearboxes, but with physical isolation between the rotating components. This physical isolation between the rotational components leads to several advantages in favor of MGs and MGMs over mechanical gearboxes. Although MGs and MGMs can potentially provide a solution for some of the practical issues of mechanical gears, MGs and MGMs have two major challenges that researchers have been trying to address. Those challenges are the high usage of rare-earth Permanent Magnet (PM) materials and the relatively complex mechanical structure of MGs and MGMs, both of which are a consequence of the multi-airgap design. This paper presents designs that reduce the PM rare-earth content for Electric Vehicles (EVs). Additionally, the paper will ensure having practical designs that do not run the risk of permanent demagnetization. The paper will also discuss some new designs to simplify the mechanical structure.

Study of Effect of Ce-Rich Mixed Rare Earth on Corrosivity of New 5XXX Series Aluminium Alloys

2011 ◽  
Vol 314-316 ◽  
pp. 1449-1455 ◽  
Author(s):  
Hua Shen ◽  
He Liang ◽  
Wei Dong Yang ◽  
Bing Xiang Liu ◽  
Tian Shu Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Aluminium Alloys ◽  
Anodic Polarization ◽  
Corrosion Current ◽  
Polarization Curves ◽  
Nyquist Diagram ◽  
Rare Earth Content

In this paper, AL-Mg-Mn-RE series alloys are becamed object of study.They are prouced with pure alumimum, pure Mg,electrolytic Mn and mix rich Ce rare earth. The effect of rare earth content on the resistance of the Al-Mg-Mn-RE series alloys are investigated by using Anodic polarization curves, electrochemical impendance spectroscopy. The results showed that their corrosivity is influenced by RE content in aluminum alloys.NO.3.3 impedance of Al-Mg-Mn-RE alloys is larger in the Nyquist diagram and its corrosion current of alloy decreases obviously. Then corrosivity of alloy is the best and the RE content is 0.3%,When the RE content is higher or lower than it that corrosivity isn’t improved but descended.

Comparison of Single-Phase and Two-Phase Composite Thermal Barrier Coatings with Equal Total Rare-Earth Content

2018 ◽  
Vol 27 (4) ◽  
pp. 556-565 ◽  
Author(s):  
Amarendra K. Rai ◽  
Michael P. Schmitt ◽  
Mitchell R. Dorfman ◽  
Dongming Zhu ◽  
Douglas E. Wolfe
Keyword(s):  
Rare Earth ◽  
Thermal Barrier Coatings ◽  
Single Phase ◽  
Thermal Barrier ◽  
Two Phase ◽  
Barrier Coatings ◽  
Rare Earth Content

Preparation of bulk Nd2Fe14B/Fe3B nanocomposite magnets with high rare earth content

2008 ◽  
Vol 16 (3) ◽  
pp. 341-344 ◽  
Author(s):  
W.Y. Zhang ◽  
M. Stoica ◽  
J. Eckert ◽  
P. Yu ◽  
J.Z. Jiang
Keyword(s):  
Rare Earth ◽  
Nanocomposite Magnets ◽  
Rare Earth Content

Microstructure of high‐remanence Nd‐Fe‐B alloys with low‐rare‐earth content

1994 ◽  
Vol 75 (10) ◽  
pp. 6652-6654 ◽  
Author(s):  
Raja K. Mishra ◽  
V. Panchanathan
Keyword(s):  
Rare Earth ◽  
Rare Earth Content

scholarly journals ThMn12-type phases for magnets with low rare-earth content: Crystal-field analysis of the full magnetization process

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
I. S. Tereshina ◽  
N. V. Kostyuchenko ◽  
E. A. Tereshina-Chitrova ◽  
Y. Skourski ◽  
M. Doerr ◽  
...  
Keyword(s):  
Rare Earth ◽  
Crystal Field ◽  
Field Analysis ◽  
Magnetization Process ◽  
Rare Earth Content

Effect of Rare Earth Y2O3 Content on Microstructure of Gradient Bioceramic Composite Coating Produced by Wide-Band Laser Cladding

2005 ◽  
Vol 288-289 ◽  
pp. 351-354 ◽  
Author(s):  
Qi Bin Liu ◽  
Long Jiang Zou ◽  
Min Zheng ◽  
Chuang Dong
Keyword(s):  
Rare Earth ◽  
Composite Coating ◽  
Laser Cladding ◽  
Dominant Role ◽  
Monosodium Glutamate ◽  
Wide Band ◽  
Experimental Results ◽  
Ti Alloy ◽  
Y2o3 Content ◽  
Rare Earth Content

In the present paper, bioceramic coating with gradient compositional design was prepared on surface of Ti alloy by using wide-band laser cladding. Effect of rare earth Y2O3 content on gradient bioceramic composite coating was studied. The experimental results indicated that adding rare earth can refine grain. Different contents of rare earth affect formation of HA andβ-TCP in bioceramic coating. With increase of rare earth content, HA andβ-TCP were synthesized. When content of rare earth ranged from 0.4% to 0.6%, the active extent of rare earth in synthesizing HA andβ-TCP got best, which indicated that “monosodium glutamate” effect of rare earth played a dominant role. However, when rare earth content was up to 0.8%, the active extent of rare earth in synthesizing HA and β-TCP conversely went down, which demonstrated that rare earth gradually lost its catalysis in manufacturing HA andβ-TCP.

Effect of rare earth content on microstructure and magnetic properties of SmCo and NdFeB thin films

2002 ◽  
Vol 91 (10) ◽  
pp. 8180 ◽  
Author(s):  
V. Neu ◽  
U. Hannemann ◽  
S. Fähler ◽  
B. Holzapfel ◽  
L. Schultz
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Rare Earth ◽  
Rare Earth Content ◽  
Microstructure And Magnetic Properties
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