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Uniaxial Compaction-Based Manufacturing Strategy and 3D Microstructural Evaluation of Near-Net-Shaped ZrO2-Toughened Al2O3 Acetabular Socket

Sarkar, Debasish and Reddy, Bhimavarapu Sambi and Mandal, Sourav and RaviSankar, Mamilla and Basu, Bikramjit (2016) Uniaxial Compaction-Based Manufacturing Strategy and 3D Microstructural Evaluation of Near-Net-Shaped ZrO2-Toughened Al2O3 Acetabular Socket. In: ADVANCED ENGINEERING MATERIALS, 18 (9). pp. 1634-1644.

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Official URL: http://dx.doi.org/10.1002/adem.201600147

Abstract

The article presents computer-aided design approach and discusses an integrated manufacturing protocol to fabricate ZrO2-toughened Al2O3 (ZTA) prototype with excellent geometrical conformity. In particular, a powder mixture of 95 wt% Al2O3-5 wt% ZrO2 with 800 ppm MgO sinter aid is uniaxially compacted at 200 kN, followed by pre-sintering-machining-final sintering. The finishing of ZTA socket to obtain submicron surface roughness (R-a approximate to 0.01 mu m) is accomplished using polymer rheological medium with silicon carbide abrasives. Summarizing, the uniqueness of uniaxial compaction-based processing approach is established to fabricate scalable near-net-shaped acetabular ceramic sockets having uniform ZrO2 distribution in 3D microstructure of ZTA, as analyzing using microcomputed tomography.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the WILEY-V C H VERLAG GMBH, POSTFACH 101161, 69451 WEINHEIM, GERMANY
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 06 Dec 2016 10:32
Last Modified: 06 Dec 2016 10:32
URI: http://eprints.iisc.ernet.in/id/eprint/55002

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