Paper Title:
Sintering of a SiC-Diamond Composite with a New Setup for the Reactive Cell
  Abstract

Polycrystalline SiC-diamond composites have been fabricated by high pressure and high temperature, HPHT, sintering conditions using a Si infiltration method. However, infiltration of liquid Si around the diamond particles results not only in SiC but also in free Si, which causes deterioration of the composite properties. In this work, a novel sintering procedure was developed to avoid the formation of free Si in the composite structure. A disk composed of a mixture of graphite and Si was first press-molded at room temperature. The disk was then placed above the diamond powder inside a high pressure chamber used for the HPHT sintering process. This arrangement permitted to preferentially form liquid SiC, which infiltrates in between the diamond particles. Using this procedure, free Si formation is inhibited and the SiC-diamond composite forms a rigid structure with improved properties.

  Info
Periodical
Materials Science Forum (Volumes 660-661)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
495-500
DOI
10.4028/www.scientific.net/MSF.660-661.495
Citation
G. S. Bobrovinitchii, A. L. D. Skury, S. N. Monteiro, R. C. Tardim, "Sintering of a SiC-Diamond Composite with a New Setup for the Reactive Cell", Materials Science Forum, Vols. 660-661, pp. 495-500, 2010
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: F.T.C. Lima, Guerold Sergueevitch Bobrovinitchii, Marcello Filgueira
Abstract:Diamond composites consist in the diamond powder mixed with a binder phase, which sintering is carried out by means of the High Pressure-High...
225
Authors: Paulina Unifantowicz, T. Boguszewski, Łukas Ciupiński, E. Fortuna, Małgorzata Lewandowska, Sebastien Vaucher, Krzysztof J. Kurzydłowski
Abstract:Thermal management materials frequently have multi-phase composite character with complex architecture of the constituents. As a result,...
173
Authors: Yan Cui, Song Bo Xu, Lei Zhang, Shun Guo
Abstract:For obtaining materials with high thermal conductivities and suitable thermal expansion coefficient for thermal management applications,...
1110
Authors: Ai Guo Zhou, Liang Li, Tai Chao Su, Shang Sheng Li
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:Ti3SiC2, a ternary carbide, was proposed at this paper to use as the binder of polycrystalline diamonds to overcome the...
671
Authors: Abdul Rehman Niazi, Shu Kui Li, Ying Chun Wang, Jin Xu Liu, Zhi Yu Hu, Usman Zahid
Chapter 3: Materials Processing Technology
Abstract:Temperature being one of the most important parameters of Spark plasma sintering (SPS) and its effects on the microstructures as well as on...
573