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TECHNICAL PAPERS

Near-Net-Shape Forming of Ceramic Powder Under Cold Combination Pressing and Pressureless Sintering

[+] Author and Article Information
H. G. Kim, H. M. Lee, K. T. Kim

Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea

J. Eng. Mater. Technol 123(2), 221-228 (Jan 15, 2001) (8 pages) doi:10.1115/1.1354991 History: Received August 06, 1999; Revised January 15, 2001
Copyright © 2001 by ASME
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References

Figures

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Finite element results for distribution of (a) hydrostatic stress and (b) the Mises stress in a zirconia powder compact after combination pressing under 240 MPa
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Finite element results for distribution of (a) residual hydrostatic stress and (b) the residual Mises stress distribution in a zirconia powder compact ejected from a die after combination pressing under 240 MPa
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Finite element results for density distribution in a zirconia powder compact after combination pressing under 240 MPa
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Samples after (a) combination pressing under 240 MPa, (b) pressureless sintering at 1450 °C for 600 min, and (c) a commercial ceramic part
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Comparison between experimental data and finite element results for a deformed shape of a zirconia powder compact after combination pressing under 240 MPa and pressureless sintering at 1450°C for 600 min
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Variations of (a) the average grain size and (b) the average relative density with sintering time and temperature for a zirconia powder compact during pressureless sintering
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A finite element result for relative density distribution in a zirconia powder compact after combination pressing under 240 MPa with friction coefficient of μ=0.02
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A schematic drawing of a split die set for combination pressing
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Finite element meshes and boundary conditions for densification of zirconia powder under combination pressing
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Variation of relative density with Vickers hardness for a zirconia powder compact
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Comparison between (a) experimental data and (b) a finite element calculation for density distribution of a zirconia powder compact after combination pressing under 240 MPa.
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Comparison between experimental data and a finite element calculation for a deformed shape of a zirconia powder compact after combination pressing under 240 MPa

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