Phase stabilization of red-emitting olivine-type NaMgPO4:Eu2+ phosphors via molten-phase quenching

2020 ◽  
Vol 7 (21) ◽  
pp. 4040-4051
Author(s):  
Takuya Hasegawa ◽  
Masato Iwaki ◽  
Ryo Tanaka ◽  
Sun-Woog Kim ◽  
Shu Yin ◽  
...  
Keyword(s):  
Rapid Quenching ◽  
Luminescence Properties ◽  
Phase Stabilization ◽  
Quenching Process ◽  
Molten Phase

Eu2+-activated red-emitting olivine-type NaMgPO4:Eu2+ phosphor was successfully synthesized by a rapid quenching process, and its luminescence properties were investigated in detail.

Bismuth telluride-based materials obtained by rapid quenching process

2008 ◽  
Vol 69 (2-3) ◽  
pp. 680-684 ◽  
Author(s):  
M.F. Reznichenko ◽  
B.M. Kuchumov ◽  
T.P. Koretskaya ◽  
A.V. Alexeyev ◽  
S.A. Gromilov
Keyword(s):  
Bismuth Telluride ◽  
Rapid Quenching ◽  
Quenching Process

scholarly journals Mathematical modelling of the quenching process of 6061 aluminium alloy plates

2020 ◽  
Vol 34 ◽  
pp. 02008
Author(s):  
Marin Petre ◽  
Raluca Efrem ◽  
Nicuşor Constantin Drăghici ◽  
Alexandra Valerica Achim
Keyword(s):  
Mathematical Modelling ◽  
Aluminium Alloy ◽  
Aluminium Alloys ◽  
Rapid Quenching ◽  
Coupled Analysis ◽  
Quenching Rate ◽  
Alloy Plate ◽  
Finite Element Software ◽  
Quenching Process ◽  
6061 Aluminium Alloy

In recent decades, due to the increase in computing power, mathematical modelling has experienced a fulminant development in almost all areas. The aluminium industry is one of these areas. One of the main processes for improving the properties of certain aluminium alloys is the solution heat treatment and quenching process. The most common quenchant used for aluminium alloys is water. The main advantage of using a water quenchant is that water can provide the rapid quenching. By considering the temperature dependence of the thermo-physical properties, the non-linear thermo-mechanical direct coupled analysis of the quenching process for a 6061 aluminium alloy plate was achieved. The structural stress due to solid thermal effects were studied by using ANSYS finite element software. The quenching rate, which determines the plate deformation after quenching, was estimated and validated on independent equipment for the research of aluminium alloy quenching process. The developed mathematical model serves as a tool by simulation of various scenarios that may occur in the industrial process.

scholarly journals Phase-Separation Control of KxFe2−ySe2 Superconductor through Rapid-Quenching Process

2017 ◽  
Vol 86 (4) ◽  
pp. 043703 ◽  
Author(s):  
Yusuke Yanagisawa ◽  
Masashi Tanaka ◽  
Aichi Yamashita ◽  
Kouji Suzuki ◽  
Hiroshi Hara ◽  
...  
Keyword(s):  
Phase Separation ◽  
Rapid Quenching ◽  
Separation Control ◽  
Quenching Process

A molecular dynamics study of structural transition of Ti during the rapid quenching process

2012 ◽  
Vol 407 (12) ◽  
pp. 2112-2118 ◽  
Author(s):  
J.H. Xia ◽  
Z.F. Cheng ◽  
D.P. Shi ◽  
Xu-yang Xiao
Keyword(s):  
Molecular Dynamics ◽  
Structural Transition ◽  
Rapid Quenching ◽  
Quenching Process

scholarly journals Magnetic properties of ND Rich Melt-Spun ND-FE-B alloy

2005 ◽  
Vol 37 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Aleksandar Grujic ◽  
Nadezda Talijan ◽  
Aleksa Maricic ◽  
Jasna Stajic-Trosic ◽  
Vladan Cosovic ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Measurement ◽  
Rapid Quenching ◽  
Experimental Investigations ◽  
X Ray Diffraction ◽  
X Ray ◽  
New Information ◽  
Melt Spun ◽  
Quenching Process ◽  
Rich Content

As a part of these experimental investigations of melt-spun Nd-Fe-B alloy with Nd rich content in relation to Nd2Fe14B prepared by rapid quenching process for optimally selected cooling rate and heat treatment, the influence of the chosen chemical composition on magnetic properties was observed. The results of X-ray diffraction, M?ssbauer spectroscopy phase analysis and magnetic measurement of investigated melt-spun Nd14.5Fe78.5B7 alloy are presented to bring some new information concerning the relation between their structure and magnetic properties.

Improvement in cyclic stability of rare-earth-based hydrogen storage alloys prepared by twin-roller rapid quenching process

2007 ◽  
Vol 432 (1-2) ◽  
pp. 338-342 ◽  
Author(s):  
Liu Zhou ◽  
Dongsheng Lu ◽  
Weishan Li ◽  
Xianfeng Guo ◽  
Junming Nan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Hydrogen Storage ◽  
Rapid Quenching ◽  
Cyclic Stability ◽  
Hydrogen Storage Alloys ◽  
Quenching Process

scholarly journals ALMA reveals large molecular gas reservoirs in recently-quenched galaxies

2019 ◽  
Vol 15 (S352) ◽  
pp. 199-199
Author(s):  
Katherine Suess
Keyword(s):  
Star Formation ◽  
Rapid Quenching ◽  
Molecular Gas ◽  
Gas Reservoirs ◽  
Physical Mechanisms ◽  
Quenching Process ◽  
Star Formation In Galaxies ◽  
Gas Fractions ◽  
The Ideal

AbstractWe still do not understand the physical mechanisms that are responsible for suppressing star formation in galaxies. Observations of post-starburst galaxies, whose spectra indicate that an intense period of star formation was followed by rapid quenching, are the ideal sample to probe the quenching process. We have conducted an ALMA survey of CO(2-1) in 13 of these recently- quenched galaxies at z ∼ 0.7 – high enough redshift that these galaxies likely just concluded their primary epoch of star formation, but low enough redshift for follow-up observations to be feasible. Our observations reveal a stunning diversity of molecular gas properties: despite a uniform optical selection and low apparent SFRs, the detected galaxies span a factor of > 30 in CO luminosity and have inferred gas fractions ranging from < 1% to 20%. These observations indicate that quenching does not require the total removal or depletion of molecular gas. No current models of the quenching process can fully explain our results.

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