Slip cast nitride-bonded silicon carbide bodies
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
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| Title |
Slip cast nitride-bonded silicon carbide bodies
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| Creator |
Ramachandra Rao, R
Kannan, TS |
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| Subject |
Chemistry and Materials (General)
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| Description |
The dispersion behaviour of SiC, Si and their mixtures, in deionised water, was studied as a function of pH by sedimentation, viscosity, rheology and zeta potential measurements. Slips of SiC + Si mixtures (3:1, 1:1 and 1:3 weight ratios) with 1 wt.% of Fe2O3 (with respect to Si), conditioned in the pH range 8-9.5 were slip cast to 56-65% dense green bodies. These on nitridation under 0.18 MPa pressure of high-purity nitrogen at 1400-1450 xB0;C for 2-4 h resulted in nitride-bonded SiC bodies having 30-76 vol.% of Si3N4 bond, densities of 2.1-2.4 g cm-3 and 3-point flexural strengths of 60-220 MPa. The phase analyses of the products were carried out by XRD and microstructure by SEM studies. xA9; 2002 Published by Elsevier Science B.V.
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| Date |
2002
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| Type |
Journal Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://nal-ir.nal.res.in/96/1/2002%2D270%2D275.pdf
Ramachandra Rao, R and Kannan, TS (2002) Slip cast nitride-bonded silicon carbide bodies. Materials Chemistry and Physics, 75 (1amp;3). pp. 270-275. |
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| Relation |
http://nal-ir.nal.res.in/96/
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