అవలోకనం
Gel casting is a near net shape colloidal processing technique for ceramics which can be adapted to develop ceramic products having various size and shapes. This technique offers advantages of machining intricate shape ceramic parts in green condition. It is possible to tailor the properties of ceramics in terms of density, mechanical properties by tailoring the composition and processing parameters. ARCI has developed SiC, Si3N4 and SiAlON products in prototype scale with the help of gel casting process and successfully sintered the products without any warpage or defect.
Key Features
- Near-net processing of complex shapes.
- Green machining
- Scalable to large size.
- Cost effective.
Potential Applications
- Non-oxide based crucibles for metallurgical industry.
- Electromagnetic windows.
- Cellular SiC product for solar receiver applications.
స్థితి
- Up-scaling is in progress for large size products.
Intellectual Property Development Index (IPDI)
Level
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2
3
4
5
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7
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10
వివరణ
Basic concepts and understanding of underlying scientific principles
Shortlisting possible applications
Research to prove technical feasibility for targeted application
Coupon level testing in simulated conditions
Check repeatability/consistency
Prototype testing in real-life conditions
Check repeatability/consistency
Reassessing feasibility (IP, competition technology, commercial)
Initiate technology transfer
Support in stabilizing production
స్థితి
| Level | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| వివరణ | Basic concepts and understanding of underlying scientific principles | Shortlisting possible applications | Research to prove technical feasibility for targeted application | Coupon level testing in simulated conditions | Check repeatability/consistency | Prototype testing in real-life conditions | Check repeatability/consistency | Reassessing feasibility (IP, competition technology, commercial) | Initiate technology transfer | Support in stabilizing production |
| స్థితి |
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- P. Barick, D.C. Jana and B.P. Saha, Load-dependent indentation behaviour of βSiAlON and αSilicon carbide, J. Adv. Ceram. 2, (2013), 185192.
- D. C. Jana, G. Sundararajan and K. Chattopadhyay, Effect of monomers content in enhancing solid-state densification of silicon carbide ceramics by aqueous gelcasting and pressureless sintering, Ceram. Inter., 43 (2017), 4852-4857.
- K. M. Reddy and B. P. Saha, Microstructure-property correlation of porous β-SiAlON ceramics, J. Alloy. Comp., 779 (2019), 590-598.