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Reinforced green ceramic shell mould for investment casting process

Harun, Zawati and Kamarudin, Noor Hasliza and Ibrahim, Mustaffa and Idris, Maizlinda Izwana and Ahmad, Sufizar (2014) Reinforced green ceramic shell mould for investment casting process. In: International Conference on X-Ray & Related Technique in Research and Industry (ICXRI2014), 11-13 August 2014 , Johor Bahru, Johor.

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Abstract

Basically in the investment casting process development of thin ceramic shell mould is very crucial as this mould inherent brittle property and highly exposed to the cracking mechanism. The slurry composition produces green(unfired) ceramic shell mould which low in strength and easily crack or fail during wax removal or handling processing. By strengthening of this brittle ceramic shell mould via reinforcement technique can enhance the strength of green shell mould body. In this work, the presence of the treated rice husk fibre toughened the green shell mould by creating mechanical interlocking bonding in shell matrix which contributes to higher modulus rupture value. In fact, through SEM observations showed that the addition of fibers to the ceramic body to form a composite shell mould prevent the crack propagation mechanism due to the existence of the matrix-fibre bridging which create the resistance of fiber to pull-out. This directly will increase the strength of green shell mould body.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: rice husk ash; zeolite Y; hydrotherma
Subjects: T Technology > TS Manufactures > TS200-770 Metal manufactures. Metalworking
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 23 Apr 2015 04:16
Last Modified: 23 Apr 2015 04:16
URI: http://eprints.uthm.edu.my/id/eprint/5900
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