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A method for gelcasting high-strength alumina ceramics with low shrinkage

Published online by Cambridge University Press:  03 January 2014

Yi Sun ,
Shunzo Shimai ,
Xiang Peng ,
Manjiang Dong ,
Hidehiro Kamiya  and
Shiwei Wang
Yi Sun
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
Shunzo Shimai
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China; and Tokyo University of Agriculture and Technology, Tokyo 183-8538, Japan
Xiang Peng
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
Manjiang Dong
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China
Hidehiro Kamiya
Affiliation:
Tokyo University of Agriculture and Technology, Tokyo 183-8538, Japan
Shiwei Wang*
Affiliation:
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A new kind of nontoxic, water-soluble copolymer consisting of isobutylene and maleic anhydride was used to gelcast alumina ceramics at room temperature in air. The polymer acts as both a dispersant and a gelling agent. The influence of the polymer on zeta potential, rheological and gelling behavior of the alumina slurry was studied. Copolymers with a lower molecular weight had greater dispersing ability. Copolymers with a larger molecular weight had greater gelling ability. Alumina slurries with solids loading up to 58 vol% were prepared by adding copolymer (0.3 wt%, relative to the powder) with both short and long molecular chains. Increasing solids loading from 50 to 58 vol% decreased the linear shrinkage from 4.63% to 1.50% after drying, and from 14.51% to 13.18% after sintering, respectively. A solids loading of 56 vol% was associated with the highest flexural strength, as high as 534 MPa.

Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 2 , 28 January 2014 , pp. 247 - 251
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Fujikawa, T. and Manabe, Y.: History and future prospects of HIP/CIP technology. J. Jpn. Soc. Powder Powder Metall. 50, 689–698 (2003).Google Scholar
Prokhorov, I.Y. and Akimov, G.Y.: Cold isostatic pressing as a method of pre-forming green ceramic ware. J. Eur. Ceram. Soc. 17(2), 129–131 (1997).Google Scholar
Tallon, C. and Franks, G.V.: Recent trends in shape forming from colloidal processing: A review. J. Ceram. Soc. Jpn. 119(1387), 147–160 (2011).CrossRefGoogle Scholar
Young, A.C., Omatete, O.O., Janney, M.A., and Menchhofer, P.A.: Gelcasting of alumina. J. Am. Ceram. Soc. 74(3), 612–618 (1991).Google Scholar
Buck, G.M. and Vasquez, P.: Ceramic slip casting technique. U.S. Patent No.5 266 252, 1993.Google Scholar
Denry, I.L.: Recent advances in ceramics for dentistry. Crit. Rev. Oral Biol. Med. 7(2), 134–143 (1996).CrossRefGoogle Scholar
Mao, X.J., Shimai, S.Z., Dong, M.J., and Wang, S.W.: Gelcasting of alumina using epoxy resin as a gelling agent. J. Am. Ceram. Soc. 90(3), 986–988 (2007).CrossRefGoogle Scholar
Mao, X.J., Shimai, S.Z., Dong, M.J., and Wang, S.W.: Gelcasting and pressureless sintering of translucent alumina ceramics. J. Am. Ceram. Soc. 91(5), 1700–1702 (2008).CrossRefGoogle Scholar
Mao, X.J., Shimai, S.Z., and Wang, S.W.: Gelcasting of alumina foams consolidated by epoxy resin. J. Eur. Ceram. Soc. 28(1), 217–222 (2008).CrossRefGoogle Scholar
Omatete, O.O., Janney, M.A., and Strehlow, R.A.: Gelcasting—A new ceramic forming process. Am. Ceram. Soc. Bull. 70(10), 1641–1649 (1991).Google Scholar
Ma, L.G., Huang, Y., Yang, J.L., Le, H.R., and Sun, Y: Effect of plasticizer on the cracking of ceramic green bodies in gelcasting. J. Mater. Sci. 40(18), 4947–4949 (2005).Google Scholar
Maleksaeedi, S., Paydar, M.H., and Ma, J.: Centrifugal gel casting: A combined process for the consolidation of homogenous and reliable ceramics. J. Am. Ceram. Soc. 93(2), 413–419 (2010).Google Scholar
Yang, Y., Shimai, S.Z., and Wang, S.W.: Room-temperature gelcasting of alumina with a water-soluble copolymer. J. Mater. Res. 28(11), 1512–1516 (2013).Google Scholar
Yang, Y., Shimai, S.Z., Sun, Y, Dong, M.J., Kamiya, H.H., and Wang, S.W.: Fabrication of porous Al2O3 ceramics by rapid gelation and mechanical foaming. J. Mater. Res. 28(15), 2012–2016 (2013).Google Scholar
Shimai, S.Z., Yang, Y., Wang, S.W., and Kamiya, H.H.: Spontaneous gelcasting of translucent alumina ceramics. Opt. Mater. Express 3(8), 1000–1006 (2013).Google Scholar
Bleier, A. and Omatete, O.O.: Rheology and microstructure of concentrated zirconia-alumina suspensions for gelcasting composites. MRS Proc. 289, 109–115 (1992).CrossRefGoogle Scholar
Maleksaeedi, S., Paydar, M.H., and Ma, J.: Centrifugal deairing of concentrated ceramic slurries. J. Am. Ceram. Soc. 92(12), 2861–2869 (2009).CrossRefGoogle Scholar