Articles
All articles | Recent articles
Yttrium Disilicate Micro-Cellular Architecture from Biotemplating of Luffa Cylindrica
S.C. Santos1, C. Yamagata1, A.C. Silva1, L.F.G. Setz2, S.R.H. Mello-Castanho1
1 Nuclear and Energy Research Institute, IPEN-CCTM, 2242 Lineu Prestes Avenue. University City, 05508000, São Paulo, SP, Brazil
2 Federal University of ABC, Center for Engineering, Modeling and Applied Social Science, 5001 Do Estado Avenue. Santo André, 09210 – 580, SP, Brazil
received February 24, 2014, received in revised form May 15, 2014, accepted June 13, 2014
Vol. 5, No. 3, Pages 203-208 DOI: 10.4416/JCST2014-00008
Abstract
The aim of this study consists in producing porous yttrium disilicate components by using Luffa Cylindrica vegetable sponge as a template for the replica method. With consideration of the effectiveness of additives, solids content and pH, the rheological behavior of yttrium disilicate aqueous suspensions was evaluated. Stabilization of the suspensions was achieved with an electrostatic mechanism using tetraethylammonium hydroxide and with an electrosteric mechanism by adding polyacrylic ammonium salt. Shear thinning suspensions were prepared by adding 2 wt% polyelectrolyte, pH 10, and 0.4 wt% binder. This condition promoted reliable impregnation results as well as improved mechanical strength of impregnated sponges. The sintering of impregnated samples at 1500°C/7 h resulted in porous components with a morphology similar to biotemplated micro-cellular architecture and a density of 3.21 g·cm-3 that corresponds to 80 % of theoretical density (4.04 g%·cm-3). Thermoluminescence characterization of yttrium disilicate powders showed that whole light emission occurred in the infrared range (λ = 750 – 4300 nm), with the wavelength at 1000 nm at 400 ºC.
Download Full Article (PDF)
Keywords
Disilicate, ceramic processing, luminescence, porous ceramic, rheology.
References
1 Ito, J., Johnson, H.: Synthesis and study of yttrialite, Am. Mineral., 53, 1940 – 1952, (1968).
2 Bataliev, N.G., Pyatenko, Y.A.: Artificial yttrialite (Y-Phase) – representative of a new structure type in rare-earth diorthosilicate series, Sov. Phys. Crystallogr., 16, 905 – 910, (1972).
3 Sun, Z.Q., Zhou, Y.C., Li, M.S.: Low-temperature synthesis and sintering of gamma-Y2Si2O7, J. Mater. Res., 21, 1443 – 1450, (2006).
4 Maier, N., Rixecker, G., Nickel, K.G.: Formation and stability of Gd, Y, Yb and Lu disilicates and their solid solutions, J. Solid State Chem., 179, 1630 – 1635, (2006).
5 Parmentier, J., Bodart, P. R., Audoin, L., et al.: Phase transformations in gel-derived and mixed-powder-derived yttrium disilicate, Y2Si2O7, by X-ray diffraction and Si-29 MAS NMR, J. Solid State Chem., 149, 16 – 20, (2000).
6 Leonyuk, N.I., Belokoneva, E.L., Bocelli, G., et al.: High-temperature crystallization and X-ray characterization of Y2SiO5, Y2Si2O7 and LaBSiO5, J. Cryst. Growth, 205, 361 – 367, (1999).
7 Trusty, P.A., Chan, K.C., Ponton, C.B.: Synthesis of sinter-active single-phase microstructure yttrium disilicate precursor powder using hydrothermal processing, J. Mater. Res., 13, 3135 – 3143, (1998).
8 Moya, J.S., Díaz, M., Serna, C.J., et al.: Formation of nanocrystalline yttrium disilicate powder by an oxalate gel method, J. Eur. Ceram. Soc., 18, 1381 – 1384, (1998).
9 Christensen, A.N., Hazell, R.G., Hewat, A.W.: Synthesis, crystal growth and structure investigations of rare-earth disilicates and rare-earth oxyapatites, Acta Chem. Scand., 51, 37 – 43, (1997).
10 Kumar, S., Drummond, C.H.: Crystallization of various compositions in the Y2O3-SiO2 system, J. Mater. Res., 7, 997 – 1003, (1992).
11 Bataliev, N.G., Bondar, I.A., Sidorenk, G.A., et al.: Synthetic silicate Y2Si2O7, Dokl. Akad. Nauk Sssr, 173, 339 ff., (1967).
12 Yamagata, C., Elias, D.R., Paiva, M.R.S., et al.: Facile preparation of apatite-type lanthanum silicate by a new water-based sol-gel process, Mater. Res. Bull., 48, 2227 – 2231, (2013).
13 Liddell, K., Thompson, D.P. : X-ray diffraction data for yttrium silicates, Brit. Ceram. Trans. J., 85, 17 – 22, (1986).
14 Diaz, M., Pecharroman, C., Del Monte, F., et al.: Synthesis, thermal evolution, and luminescence properties of yttrium disilicate host matrix, Chem. Mater., 17, 1774 – 1782, (2005).
15 Dilek, T., Koparan, E.T., Basoglu, M., et al.: The magnetic and structural properties of SiC-doped MgB(2) bulks prepared by the standard ceramic processing, J. Supercond. Nov. Magn., 24, 495 – 497, (2011).
16 Setz, L.F.G., Silva, A.C., Santos, S.C., et al., A viscoelastic approach from α-Al2O3 suspensions with high solids content, J. Eur. Ceram. Soc., 33, 3211 – 3219, (2013).
17 Setz, L.F.G., Santacruz, I., Colomer, M.T., et al.: Tape casting of strontium and cobalt doped lanthanum chromite suspensions, J. Eur. Ceram. Soc., 30, 2897 – 2903, (2010).
18 Santos, S.C., Setz, L.F.G., Yamagata, C., et al.: Rheological study of yttrium oxide aqueous suspensions, Mater. Sci. Forum VII, 660 – 661, 712 – 717, (2010).
19 Santos, S.C., Mello-Castanho, S.R.H.: Rheological behavior of yttria aqueous suspensions for impregnation method, presented at the CIMTEC- International Ceramic Congress, Montecatini Terme, Tuscany, 2010.
20 Kotani, Y., Behbahani, H.F., Takeno, T.: An excess enthalpy flame combustor for extended flow ranges, Symposium (International) on Combustion, 20, 2025 – 2033, (1985).
21 Kotani, Y., Takeno, T.: An experimental study on stability and combustion characteristics of an excess enthalpy flame, Symposium (International) on Combustion, 19, 1503 – 1509, (1982).
22 Wood, S., Harris, A.T.: Porous burners for lean-burn applications, Prog. Energ. Combust., 34, 667 – 684, (2008).
23 Luyten, J., Mullens, S., Cooymans, J., et al.: Different methods to synthesize ceramic foams, J. Eur. Ceram. Soc., 29, 829 – 832, (2009).
24 Studart, A.R., Gonzenbach, U.T., Tervoort, E., et al.: Processing routes to macroporous ceramics: A review, J. Am. Ceram. Soc., 89, 1771 – 1789, (2006).
25 Saggiowoyansky, J., Scott, C.E., Minnear, W.P.: Processing of porous ceramics, Am. Ceram. Soc. Bull., 71, 1674 – 1682, (1992).
26 Bowen, H.K.: Basic research needs on high-temperature ceramics for energy applications, Mater. Sci. Eng., 44, 1 – 56, (1980).
27 Nor, M.A.A.M., Hong, L.C., Ahmad, Z.A., et al.: Preparation and characterization of ceramic foam produced via polymeric foam replication method, J. Mater. Process. Tech., 207, 235 – 239, (2008).
28 Schwartzwalder, K., Somers, A.V.: Method of making porous ceramic, United States of America Patent, 1963.
29 Santos, S.C., Acchar, W., Yamagata, C., et al.: Yttria nettings by colloidal processing, J. Eur. Ceram. Soc., 34, 2509 – 2517, (2014).
30 Moreno, R., Rheology of Ceramic Suspensions, (in Spanish) , Madrid: Consejo superior de investigaciones científicas, (2005).
31 Liu, Z.T., Fan, T.X., Zhang, W., et al.: The synthesis of hierarchical porous iron oxide with wood templates, Micropor.Mesopor. Mat., 85, 82 – 88, (2005).
32 Sherman, A.J., Tuffias, R.H., Kaplan, R.B.: Refractory ceramic foams – a novel, new high-temperature structure, Am. Ceram. Soc. Bull., 70, 1025 – 1029, (1991).
33 Luyten, J., Thijs, I., Vandermeulen, W., et al.: Strong ceramic foams from polyurethane templates, Adv.Appl. Ceram., 104, 4 – 8, (2005).
34 Silva, S.A., Brunelli, D.D., Melo, F.C.L., et al.: Preparation of a reticulated ceramic using vegetal sponge as templating, Ceram. Int., 35, 1575 – 1579, (2009).
35 White, R.A., White, E.W., Weber, J.N.: Replamineform – new process for preparing porous ceramic, metal, and polymer prosthetic materials, Science, 176, 922 ff., (1972).
36 Roy, D.M., Linnehan, S.K.: Hydroxyapatite formed from coral skeletal carbonate by hydrothermal exchange, Nature, 247, 220 – 222, (1974).
37 Ben-Nissan, B.: Natural bioceramics: from coral to bone and beyond, Curr. Opin.Solid St. M., 7, 283 – 288, (2003).
38 Santos, S.C., Silva, A.C., Mello-Castanho, S.R.H., Morphology evolution of yttria porous ceramics during replica processing, Mater. Sci. Forum, (2011).
39 Rebouillat, S., Letellier, B., Steffenino, B.: Wettability of single fibres – beyond the contact angle approach, Int. J. Adhes. Adhes., 19, 303 – 314, (1999).
40 Kalnins, M.A.: Wettability of wood polymer composites – determination of contact-angle by modified wilhelmy plate method, Abstr. Pap. Am. Chem. S., 194, 64-Cell, (1987).
41 Lange, H.: Contact angle wettability and adhesion, KolloidZ. Z. Polym., 204, 134 ff., (1965).
Copyright
Göller Verlag GmbH