Nanoparticles Consolidation Mechanism at High Pressure and High Temperature in Diamond-B-Si-Cu System

Ana Lúcia Diegues  Skury; Sérgio Neves Monteiro; Marcia G. de Azevedo; Angelica da Cunha dos Santos; Guerold S. Bobrovnitchii

doi:10.4028/www.scientific.net/MSF.727-728.334

Paper Titles

Mechanical and Structural Characterization of Cu-Ni-Ag/Y₂O₃ Composites Obtained by Powder Metallurgy
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Metal Matrix Composites from Powder Mixtures of Copper, Tungsten, Aluminum and Nanodiamonds
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Effect of the Milling Time and Addition of a Grinding Agent of Quasicrystalline Powder Based on AlCuFeB Alloys
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Study of Oxidation on Pr-Fe-Co-B Nanopowders Produced by HDDR and Mechanical Milling
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Nanoparticles Consolidation Mechanism at High Pressure and High Temperature in Diamond-B-Si-Cu System
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Covering with Carbon Black and Thermal Treatment by a CO₂ Laser Surfaces of Aisi 4340 Steel
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Coated Steel Surfaces with WC by Lasers Action
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Application of Sintered Steel for Synchronizer Rings Used in Mechanical Transmissions
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Recycling of Zircaloy Machining Chips by VAR Remelting and Powder Metallurgy Techniques
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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Nanoparticles Consolidation Mechanism at High...

Nanoparticles Consolidation Mechanism at High Pressure and High Temperature in Diamond-B-Si-Cu System

Abstract:

The synthesis of advanced materials with superior performance and properties is of growing scientific and technological interest. In particular, significant achievements have been attained in the synthesis of nanocomposites associated with superhard materials. This work investigates nanostructured composites obtained by high pressure and high temperature sintering of synthetic diamond combined with boron, silicon and copper. Diamond powder was mixed with B, Si and Cu, also in the form of powder. The mixture was then submitted to high energy wet milling until a nanopowder was formed. Sintering of this resulting nanopowder was carried out at 5.6 GPa of pressure and 1300°C. X-ray diffraction and scanning electron microscopy analysis revealed the formation of new phases in a well consolidated nanostructure with relatively high density.

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Materials Science Forum (Volumes 727-728)

Pages:

334-339

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.334

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Online since:

August 2012

Authors:

Ana Lúcia Diegues Skury, Sérgio Neves Monteiro, Marcia G. de Azevedo, Angelica da Cunha dos Santos, Guerold S. Bobrovnitchii

Keywords:

High-Pressure, Nanocomposite, Nanostructure

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