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Title of Journal: Metall and Materi Trans B

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Abbravation: Metallurgical and Materials Transactions B

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Springer US

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DOI

10.1016/0147-9571(93)90050-f

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1543-1916

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Preparation and Thermal Stability of Ultrafine Nic

Authors: Zhimei Xia Shengming Jin Kun Liu
Publish Date: 2016/08/04
Volume: 47, Issue: 5, Pages: 2793-2798
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Abstract

Ultrafine nickel powders containing hexagonal closepacked nickel hcpNi nanocrystallites were prepared using liquidphase reduction with NiC2O4 NaOH polyvinylpyrrolidone PVP and ethylene glycol EG The nickel powders were characterized by XRD and SEM TG analysis was used to determine the thermal stability of ultrafine nickel powders The results showed that nickel powders with 451 pct of hcpNi nanocrystallites were synthesized under the following conditions a reflux time of 3 hours an NiC2O4toEG molar ratio of 001 5 g/L PVP and 85 g/L NaOH SEM results illustrated that spherical particles of size 500 nm were obtained The results of thermal stability showed that the antioxidant property at high temperature was improved with the increase of hcpNi content The oxidation rate of nickel powders with 433 pct hcpNi was less than 50 pct even if the temperature was up to 873 K 600 °C

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Other Papers In This Journal:
  1. Measuring Mechanical Behavior of Steel During Solidification: Modeling the SSCC Test
  2. Investigation into Oxygen-Enriched Bottom-Blown Stibnite and Direct Reduction
  3. Morphological Changes of Panzhihua Ilmenite During Oxidation Treatment
  4. A Thermodynamic Model of Sulfur Distribution Ratio between CaO–SiO 2 –MgO–FeO–MnO–Al 2 O 3 Slags and Molten Steel during LF Refining Process Based on the Ion and Molecule Coexistence Theory
  5. Melting Mechanism of Water-Cooled Billet-Type Bottom Electrode of Direct Current Arc Furnace: A Numerical Approach
  6. Laboratory Carburization of Direct-Reduced Iron in CH 4 -H 2 -N 2 Gas Mixtures, and Comparison with Industrial Samples
  7. Predicting the Effect of Pouring Temperature on the Crystallite Density, Remelting, and Crystal Growth Kinetics in the Solidification of Aluminum Alloys
  8. A Critical Review of the Modified Froude Number in Ladle Metallurgy
  9. A Framework for Soft Sensing of Liquid Pool Length of Continuous Casting Round Blooms
  10. Conditions for the Efficient Crushing of the As-Cast Microstructure of 30Cr10Ni Duplex Stainless Steel
  11. Coating tungsten composites for improved low temperature ductility
  12. Vaporization Studies from Slag Surfaces Using a Thin Film Technique
  13. Analysis of Microstructure Effects on Edge Crack of Thin Strip During Cold Rolling
  14. Separation of Phosphorus- and Iron-Enriched Phase from CaO-SiO 2 -FeO-MgO-P 2 O 5 Melt with Super Gravity
  15. A Study for Initial Solidification of Sn-Pb Alloy during Continuous Casting: Part I. The Development of the Technique
  16. An investigation of the validity of certain tempering parameters
  17. Chemical diffusion in the β phase of the Zr-Ti alloy system
  18. Morphology Control for Al 2 O 3 Inclusion Without Ca Treatment in High-Aluminum Steel
  19. A Semi-empirical Mathematical Model to Estimate the Duration of the Atmosphere within a Double Oxide Film Defect in Pure Aluminum Alloy
  20. Thermal Conductivity of Molten Silicate of Al 2 O 3 -CaO-Na 2 O-SiO 2 Measured by Means of a Front Heating-Front Detection Laser Flash Method
  21. New integration of the Gibbs-Duhem equation and thermodynamics of Pr-Zn alloys
  22. Influence of Turbulent Flows in the Nozzle on Melt Flow Within a Slab Mold and Stability of the Metal–Flux Interface
  23. Freeze-Lining Formation of a Synthetic Lead Slag: Part II. Thermal History
  24. Viscosity of CaO-MgO-Al 2 O 3 -SiO 2 -TiO 2 Melts Containing TiC Particles
  25. Kinetics of Na 2 O and B 2 O 3 Loss From CaO-SiO 2 -Al 2 O 3 Slags
  26. The role of mechanical properties in low-stress fatigue crack propagation
  27. Effect of Current Frequency on Droplet Evolution During Magnetic-Field-Controlled Electroslag Remelting Process Via Visualization Method
  28. A Mechanism Model for Raceway Formation and Variation in a Blast Furnace
  29. Environmental hydrogen embrittlement of an α-β titanium alloy: Effect of microstructure
  30. Effect of Microwave Treatment Upon Processing Oolitic High Phosphorus Iron Ore for Phosphorus Removal
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  33. Effect of Water Vapor During Secondary Cooling on Hot Shortness in Fe-Cu-Ni-Sn-Si Alloys
  34. Influence of the Processing Route in the Microstructure and Mechanical Properties of NiAl/TiB 2 Composites Produced by Combustion Synthesis
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  38. A Topologically Based Procedure to Identify Invariant Reactions for Isobaric Multicomponent Phase Diagrams
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  41. Quasi-Chemical Viscosity Model for Fully Liquid Slag in the Al 2 O 3 -CaO-MgO-SiO 2 System. Part II: Evaluation of Slag Viscosities
  42. A thermodynamic and experimental study of the electrochemically induced cooling of the anode in hall-héroult cells
  43. Experimental and Numerical Analysis of the Deformation of a Liquid Aluminum Free Surface Covered by an Oxide Layer During Induction Melting
  44. Investigation on the Effect of Nozzle Number on the Recirculation Rate and Mixing Time in the RH Process Using VOF + DPM Model
  45. Effect of Gas Atmosphere on Carbothermal Reduction and Nitridation of Titanium Dioxide
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