The effect of slip casting parameters on the ultrafine microstructure and density of pore-free YAG ceramic obtained by vacuum sintering

Document Type : Research Paper

Authors

1 Department of Nanotechnology Engineering, Faculty of Advanced Sciences and Technologies, University of Isfahan, Isfahan, Iran.

2 Department of Advanced Materials and Renewable Energies, Iranian Research Organization for Science and Technology, Tehran, Iran.

Abstract

In this study, the effect of slip casting parameters on the ultrafine microstructure and the density of pore-free YAG ceramic was evaluated. A stable, high concentrated aqueous YAG slurry using Dolapix-CE64 as a dispersant was prepared and the effect of dispersant concentration as well as the solid load on the stability and rheological behavior of the slurry was also studied. The optimum dispersant content for the suspension was 1.5 wt% which led to the slurry with minimum viscosity and near-Newtonian behavior. The results showed that increasing the solid load of the YAG slurry causes higher viscosity and alters the rheological behavior of the slurry to a slight shear thinning. By increasing the solid load of the slurry up to a specific amount of 75 wt%, relative green density of the slip cast sample was increased to about 65%, but further increase reduced the green density. The microstructure and the density of the sintered body in the air and vacuum atmospheres comprise a direct relationship to the green density of the slip cast body.

Keywords

References

1. Frage N, Kalabukhov S, Sverdlov N, Ezersky V, Dariel MP. Densification of transparent yttrium aluminum garnet (YAG) by SPS processing. Journal of the European Ceramic Society. 2010;30(16):3331-7.
2. Sokol M, Kalabukhov S, Kasiyan V, Rothman A, Dariel MP, Frage N. Mechanical, thermal and optical properties of the SPS-processed polycrystalline Nd:YAG. Optical Materials. 2014;38:204-10.
3. Ikesue A, Yoshida K, Yamamoto T, Yamaga I. Optical scattering centers in polycrystalline Nd: YAG laser. Journal of the American Ceramic Society. 1997;80(6):1517-22.
4. Irankhah R, Zakeri M, Rahimipoor MR, Razavi M. In-situ Fabrication of Transparent Magnesium Aluminate Spinel by Spark Plasma Sintering. Advanced Ceramics Progress. 2017;3(1):6-9.
5. Lv Y, Zhang W, Tan J, Sang Y, Qin H, Hu J, et al. Dispersion of concentrated aqueous neodymia–yttria–alumina mixture with ammonium poly(acrylic acid) as dispersant. Journal of Alloys and Compounds. 2011;509(6):3122-7.
6. Li X, Li Q. YAG ceramic processed by slip casting via aqueous slurries. Ceramics International. 2008;34(2):397-401.
7. Appiagyei KA, Messing GL, Dumm JQ. Aqueous slip casting of transparent yttrium aluminum garnet (YAG) ceramics. Ceramics International. 2008;34(5):1309-13.
8. Guo W, Cao Y, Huang Q, Li J, Huang J, Huang Z, et al. Fabrication and laser behaviors of Nd:YAG ceramic microchips. Journal of the European Ceramic Society. 2011;31(13):2241-6.
9. Ji X, Deng J, Kang B, Huang H, Wang X, Jing W, et al. Fabrication of transparent neodymium-doped yttrium aluminum garnet ceramics by high solid loading suspensions. Ceramics International. 2013;39(7):7921-6.
10. Guo W, Huang J, Lin Y, Huang Q, Fei B, Chen J, et al. A low viscosity slurry system for fabricating chromium doped yttrium aluminum garnet (Cr:YAG) transparent ceramics. Journal of the European Ceramic Society. 2015;35(14):3873-8.
11. Esposito L, Piancastelli A. Role of powder properties and shaping techniques on the formation of pore-free YAG materials. Journal of the European Ceramic Society. 2009;29(2):317-22.
12. Lv Y-H, Liu H, Sang Y-H, Liu S-J, Chen T, Qin H-M, et al. Electrokinetic properties of Nd:YAG nanopowder and a high concentration slurry with ammonium poly(acrylic acid) as dispersant. Journal of Materials Science. 2010;45(3):706-12.
13. Ba X, Li J, Pan Y, Zeng Y, Liu W, Jiang B, et al. Influences of Solid Loadings on the Microstructures and the Optical Properties of Yb:YAG Ceramics. International Journal of Applied Ceramic Technology. 2013;12(2):418-25.
14. Mohammadi F, Mirzaee O, Tajally M. Influence of solid loading on the rheological, porosity distribution, optical and the microstructural properties of YAG transparent ceramic. Ceramics International. 2018;44(11):12098-105.
15. Mohammadi F, Mirzaee O, Tajally M. Influence of TEOS and MgO addition on slurry rheological, optical, and microstructure properties of YAG transparent ceramic. Optical Materials. 2018;85:174-82.
16. Hreniak D, Stręk W. Synthesis and optical properties of Nd3+-doped Y3Al5O12 nanoceramics. Journal of Alloys and Compounds. 2002;341(1-2):183-6.
17. Zhang X, Liu D, Sang Y, Liu H, Wang J. Effects of aging on the characteristics of Nd:YAG nano-powders. Journal of Alloys and Compounds. 2010;502(1):206-10.
18. Deineka TG, Doroshenko AG, Mateychenko PV, Tolmachev AV, Vovk EA, Vovk OM, et al. Influence of sulfate ions on properties of co-precipitated Y3Al5O12:Nd3+ nanopowders. Journal of Alloys and Compounds. 2010;508(1):200-5.
19. Chen Z-H, Yang Y, Hu Z-G, Li J-T, He S-L. Synthesis of highly sinterable YAG nanopowders by a modified co-precipitation method. Journal of Alloys and Compounds. 2007;433(1-2):328-31.
20. Zhang WX, Zhou J, Liu WB, Li J, Wang L, Jiang BX, et al. Fabrication, properties and laser performance of Ho:YAG transparent ceramic. Journal of Alloys and Compounds. 2010;506(2):745-8.
21. Wen L, Sun X, Xiu Z, Chen S, Tsai C-T. Synthesis of nanocrystalline yttria powder and fabrication of transparent YAG ceramics. Journal of the European Ceramic Society. 2004;24(9):2681-8.
22. Yang H, Zhang J, Qin X, Luo D, Ma J, Tang D, et al. Polycrystalline Ho:YAG Transparent Ceramics for Eye-Safe Solid State Laser Applications. Journal of the American Ceramic Society. 2011;95(1):52-5.
23. Yang H, Qin X, Zhang J, Ma J, Tang D, Wang S, et al. The effect of MgO and SiO2 codoping on the properties of Nd:YAG transparent ceramic. Optical Materials. 2012;34(6):940-3.
24. Liu W, Zhang W, Li J, Kou H, Shen Y, Wang L, et al. Influence of pH values on (Nd+Y):Al molar ratio of Nd:YAG nanopowders and preparation of transparent ceramics. Journal of Alloys and Compounds. 2010;503(2):525-8.
25. Ikesue A, Furusato I, Kamata K. Fabrication of Polycrystal line, Transparent YAG Ceramics by a Solid-State Reaction Method. Journal of the American Ceramic Society. 1995;78(1):225-8.
26. Krell A, Klimke J. Effects of the Homogeneity of Particle Coordination on Solid-State Sintering of Transparent Alumina. Journal of the American Ceramic Society. 2006;89(6):1985-92.
27. Lewis JA. Colloidal Processing of Ceramics. Journal of the American Ceramic Society. 2004;83(10):2341-59.
28. Evanko CR, Dzombak DA, Novak JW. Influence of surfactant addition on the stability of concentrated alumina dispersions in water. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 1996;110(3):219-33.
29. Ghatee M, Salihi H. Investigation of the mechanical properties of various yttria stabilized zirconia based thin films prepared by aqueous tape casting. Advanced Ceramics Progress. 2017;3(1):26-30.
30. Krell A, Hutzler T, Klimke J, Potthoff A. Fine-Grained Transparent Spinel Windows by the Processing of Different Nanopowders. Journal of the American Ceramic Society. 2010;93(9):2656-66.
31. Tallon C, Limacher M, Franks GV. Effect of particle size on the shaping of ceramics by slip casting. Journal of the European Ceramic Society. 2010;30(14):2819-26.
32. Shafeiey A, Enayati MH, Al-Haji A. The effect of slip casting parameters on the green density of MgAl 2 O 4 spinel. Ceramics International. 2017;43(8):6069-74.
33. Tong H, Wang N, Zou Y, Zhang Z, Fan W, Shou J, et al. Densification and Mechanical Properties of YAG Ceramics Fabricated by Air Pressureless Sintering. Journal of Electronic Materials. 2018;48(1):374-85.
34. Bhattacharyya S, Mukhopadhyay TK, Dana K, Ghatak S. Pressureless reaction sintering of yttrium aluminium garnet (YAG) from powder precursor in the hydroxyhydrogel form. Ceramics International. 2011;37(8):3463-8.
35. Sang Y, Qin H, Liu H, Zhao L, Wang Y, Jiang H, et al. Partial wet route for YAG powders synthesis leading to transparent ceramic: A core–shell solid-state reaction process. Journal of the European Ceramic Society. 2013;33(13-14):2617-23.
36. Guo D, Zhao L, Sang Y, Liu H, Liu S, Sun X. Al2O3/yttrium compound core–shell structure formation with burst nucleation: a process driven by electrostatic attraction and high surface energy. RSC Adv. 2014;4(98):55400-6.
37. Kafili G, Movahedi B, Milani M. A comparative approach to synthesis and sintering of alumina/yttria nanocomposite powders using different precipitants. Materials Chemistry and Physics. 2016;183:136-44.
38. Kafili G, Loghman-Estarki MR, Milani M, Movahedi B. The effects of TEOS on the microstructure and phase evolutions of YAG phase by formation of alumina/yttria core-shell structures. Journal of the American Ceramic Society. 2017;100(9):4305-16.
39. Guo D, Ma B, Zhao L, Qiu J, Liu W, Sang Y, et al. Bright YAG:Ce Nanorod Phosphors Prepared via a Partial Wet Chemical Route and Biolabeling Applications. ACS Applied Materials & Interfaces. 2016;8(19):11990-7.
40. Kafili G, Movahedi B, Dini G, Milani M. Yttria shell thickness estimation of alumina/yttria core/shell nanoparticles via X-ray diffraction analysis. Materials Chemistry and Physics. 2019;223:564-8.
41. Test Methods for Density of Compacted or Sintered Powder Metallurgy (PM) Products Using Archimedes Principle. ASTM International.
42. Barnes HA, Hutton JF, Walters K. An introduction to rheology: Elsevier; 1989.
43. Khan AU, Briscoe BJ, Luckham PF. Interaction of binders with dispersant stabilised alumina suspensions. Colloids and Surfaces A: Physicochemical and Engineering Aspects. 2000;161(2):243-57.
44. Ring TA. Ceramic Powder Synthesis. Fundamentals of Ceramic Powder Processing and Synthesis: Elsevier; 1996. p. 81-3.
45. Cinar S. Rheological behavior of oxide nanopowder suspensions. 2013.
46. Michálková M, Ghillányová K, Galusek D. The influence of solid loading in suspensions of a submicrometric alumina powder on green and sintered pressure filtrated samples. Ceramics International. 2010;36(1):385-90.
47. Liu D-M. Influence of solid loading and particle size distribution on the porosity development of green alumina ceramic mouldings. Ceramics International. 1997;23(6):513-20.
48. Ferreira JMF. Role of the clogging effect in the slip casting process. Journal of the European Ceramic Society. 1998;18(9):1161-9.
49. Olhero SM, Ferreira JMF. Influence of particle size distribution on rheology and particle packing of silica-based suspensions. Powder Technology. 2004;139(1):69-75.
50. Boulesteix R, Maître A, Chrétien L, Rabinovitch Y, Sallé C. Microstructural Evolution During Vacuum Sintering of Yttrium Aluminum Garnet Transparent Ceramics: Toward the Origin of Residual Porosity Affecting the Transparency. Journal of the American Ceramic Society. 2013;96(6):1724-31.
51. Choi JJ, Ryu J, Kim HE. Microstructural evolution of transparent PLZT ceramics sintered in air and oxygen atmospheres. Journal of the American Ceramic Society. 2001;84(7):1465-9.
52. Paek YK, Eun KY, Kang SJL. Effect of Sintering Atmosphere on Densification of MgO-Doped Al2O3. Journal of the American Ceramic Society. 1988;71(8):C-380-C-2.
53. Huang Y, Jiang D, Zhang J, Lin Q, Huang Z. Sintering of Transparent Yttria Ceramics in Oxygen Atmosphere. Journal of the American Ceramic Society. 2010;93(10):2964-7.
54. Chen P-L, Chen IW. Grain Boundary Mobility in Y2O3: Defect Mechanism and Dopant Effects. Journal of the American Ceramic Society. 1996;79(7):1801-9.
55. Coble RL. Sintering Alumina: Effect of Atmospheres. Journal of the American Ceramic Society. 1962;45(3):123-7.
Journal of Ultrafine Grained and Nanostructured Materials
Volume 52, Issue 2
December 2019
Pages 154-163

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History

  • Receive Date: 12 April 2019
  • Revise Date: 31 July 2019
  • Accept Date: 03 September 2019

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