Structure and composition of higher-rhenium-content superalloy based on La-alloyed Ni-Al-Cr

Techniques and methodology used in a mineralogical and osmium isotope study of platinum group minerals from alluvial deposits in Colombia, California, Oregon and Alaska

Mineralogical Magazine ◽

10.1180/minmag.1997.061.406.04 ◽

1997 ◽

Vol 61 (406) ◽

pp. 367-375 ◽

Cited By ~ 1

Author(s):

I. C. Lyon ◽

H. Tamana ◽

D. J. Vaughan ◽

A. J. Criddle ◽

J. M. Saxton ◽

...

Keyword(s):

Trace Element ◽

Alluvial Deposits ◽

Ion Probe ◽

Platinum Group Minerals ◽

Placer Deposits ◽

Trace Element Contents ◽

Isotope Study ◽

Platinum Group ◽

Textural Evidence ◽

Rhenium Content

AbstractPlatinum-group minerals (PGM) from placer deposits in Colombia, California, Oregon and Alaska were investigated with the electron microprobe, proton microprobe (μ-PIXE) and ion probe to analyse their major and trace element contents and 187Os/186Os isotopic ratios. Most of the grains in the samples investigated proved to be essentially homogeneous alloys of Pt-Fe and Os-Ir-Ru although a few of them contained inclusions of other PGM such as cooperite and laurite. Detailed analyses were undertaken on the Os-Ir-Ru alloy phases.The 187Os/186Os isotope ratios fell into a range from 1.005 to 1.156 and are consistent with data published on PGM from other placer deposits from these regions. The ratios, together with the trace element data (and in particular the low rhenium content) determined by ion probe and μ-PIXE, indicate that crustal osmium was not incorporated in the grains and that no significant evolution of the 187Os/186Os ratios occurred during their history. These data, along with mineralogical and textural evidence, are consistent with a mantle origin for the grains through ultramafic intrusions, although the data do not entirely rule out alternative interpretations.

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Determination of rhenium content in molybdenite by ICP–MS after separation of the major matrix by solvent extraction with N-benzoyl-N-phenylhydroxalamine

Talanta ◽

10.1016/j.talanta.2010.01.043 ◽

2010 ◽

Vol 81 (3) ◽

pp. 954-958 ◽

Cited By ~ 20

Author(s):

Jie Li ◽

Li-feng Zhong ◽

Xiang-lin Tu ◽

Xi-rong Liang ◽

Ji-feng Xu

Keyword(s):

Solvent Extraction ◽

Icp Ms ◽

Rhenium Content

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Effect of rhenium content on microstructures and mechanical properties of electron beam welded TZM alloy joints

Journal of Manufacturing Processes ◽

10.1016/j.jmapro.2018.03.008 ◽

2018 ◽

Vol 32 ◽

pp. 337-343 ◽

Cited By ~ 9

Author(s):

Yongyun Zhang ◽

Ting Wang ◽

Siyuan Jiang ◽

Binggang Zhang ◽

Yong Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Electron Beam ◽

Microstructures And Mechanical Properties ◽

Rhenium Content

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Role of Rhenium in Single Crystal Ni-Based Superalloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.638-642.2257 ◽

2010 ◽

Vol 638-642 ◽

pp. 2257-2262 ◽

Cited By ~ 10

Author(s):

Tao Jin ◽

Wen Zhen Wang ◽

Xiao Feng Sun ◽

Zhuang Qi Hu

Keyword(s):

Single Crystal ◽

Rupture Life ◽

Solution Process ◽

Stress Rupture ◽

Nominal Composition ◽

Stress Rupture Life ◽

Dislocation Configuration ◽

Rhenium Addition ◽

Rhenium Content

The effect of rhenium on the microstructure and mechanical properties of single crystal superalloys with a nominal composition of Ni-3Cr-12Co-1Mo-6W-6Al-8Ta-0.1Hf-(0, 2, 4) Re has been studied. With the rise of rhenium content, the size of as-cast  particles becomes smaller. Rhenium addition elevates the incipient melting temperature and slows down the solid solution process. Even after 2000h prolonged aging both at 950°C and 1050°C, no topologically close-packed phase precipitation is found in the three alloys with Re content up to 4%. Re retards the  coarsening and is beneficial to improving the stress rupture life. The deformation mechanisms together with the dislocation configuration have been studied and discussed.

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1025. Influence of rhenium content in an alloy with tungsten on technological and utilization properties of oxide cathode heaters

Vacuum ◽

10.1016/0042-207x(71)92570-x ◽

1971 ◽

Vol 21 (9) ◽

pp. 441

Keyword(s):

Oxide Cathode ◽

Rhenium Content

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ELECTROCATALYSIS OF THE HYDROGEN EVOLUTION REACTION ON CoRe, CoWRe SUPERALLOYS DEPOSITED FROM CITRATE ELECTROLYTE

Ukrainian Chemistry Journal ◽

10.33609/2708-129x.86.9.2020.28-38 ◽

2020 ◽

Vol 86 (9) ◽

pp. 28-38

Author(s):

Yuliya Yapontseva ◽

Tetiana Maltseva ◽

Valeriy Kublanovsky

Keyword(s):

Hydrogen Evolution Reaction ◽

Alkaline Solution ◽

Current Density ◽

Hydrogen Reduction ◽

Ternary Alloys ◽

Hydrogen Ions ◽

Citrate Electrolyte ◽

Order Of Magnitude ◽

Rhenium Content ◽

Deposition Current Density

The reaction of electroreduction of hydrogen ions on binary CoRe and ternary CoWRe alloys electrodeposited from a citrate electrolyte with different amount of potassium perrhenate (0.01 and 0.05 mol·L-1) depending on the deposition current density (5–40 A·cm-2) has been investigated by the method of stationary voltammetry. The kinetic parameters of the reaction have been calculated, and it is shown that the use of ternary alloys allows one to increase the value of exchange current density by almost an order of magnitude and significantly reduce the overvoltage of hydrogen reduction in comparison with cobalt. It is shown that the best electrocatalysts for the reduction of hydrogen in alkaline solution can be ternary CoWRe alloys with a rhenium content of 15–20 at. %.

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