Preparation of fine-grained α-alumina powder from seeded boehmite
Source abstract
Abstract
Fine-grained α-alumina powder with high purity was prepared from boehmite sol with pseudo-boehmite as seed. The effect of the seed on the formation temperature and the particulate properties of α-Al2O3 was investigated. The results showed that pseudo-boehmite seed significantly reduced the formation temperature of α-Al2O3. The final α-Al2O3 powders had an average particle size of ~250 nm with good dispersity and narrow particle size distribution. With the increase of the seed amount, no remarkable change was observed in the average particle size of α-Al2O3 particles, but the particle size distribution became narrower.
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Research context
OpenAlex topics: Advanced ceramic materials synthesis · Magnesium Oxide Properties and Applications · Ferroelectric and Piezoelectric Materials
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References (32)
Show source-provided references
1. Bagwell RB, Messing GL (1995) Critical factors in the production of sol–gel derived porous alumina. Key Eng Mater 115:45–6410.4028/www.scientific.net/KEM.115.45 ↗
2. Baker BR, Pearson RM (1974) Water content of pseudoboehmite: a new model for its structure. J Catal 33:265–27810.1016/0021-9517(74)90270-X ↗
3. Bell NS, Cho SB, Adair JH (1998) Size control of α-alumina particles synthesized in 1,4-butanediol solution by α-alumina and α-hematite seeding. J Am Ceram Soc 81:1411–142010.1111/j.1151-2916.1998.tb02498.x ↗
4. Chandradass J, Bae DS (2008) Synthesis and characterization of alumina nanoparticles by igepal CO-520 stabilized reverse micelle and sol–gel processing. Mater Manuf Process 23:494–49810.1080/10426910802104211 ↗
5. Dudnik EV, Shevchenko AV, Ruban AK, Red′Ko VP, Lopato LM (2008) Low-temperature synthesis of α-Al2O3. Powder Metall Metal Ceram 47:379–38310.1007/s11106-008-9029-z ↗
6. Franks GV, Gan Y (2007) Charging behavior at the alumina–water interface and implications for ceramic processing. J Am Ceram Soc 90:3373–338810.1111/j.1551-2916.2007.02013.x ↗
7. Han KR, Lim CS, Hong MJ, Jang JW, Hong KS (2000) Preparation method of submicrometer-sized α-alumina by surface modification of γ-alumina with alumina sol. J Am Ceram Soc 83:750–75410.1111/j.1151-2916.2000.tb01269.x ↗
8. Iler RK (1961) Fibrillar colloidal boehmite; progressive conversion to gamma, theta, and alpha aluminas. J Am Ceram Soc 44:618–62410.1111/j.1151-2916.1961.tb11669.x ↗
9. Ji Y, Yeomans JA (2002) Processing and mechanical properties of Al2O3–5 vol.% Cr nanocomposites. J Eur Ceram Soc 22:1927–193610.1016/S0955-2219(01)00528-3 ↗
10. Karagedov GR, Myz AL (2012) Preparation and sintering pure nanocrystalline α-alumina powder. J Eur Ceram Soc 32:219–22510.1016/j.jeurceramsoc.2011.08.012 ↗
11. Koo JB, Hong KJ, Park JS, Shin DC (2004) Effect of grain size on transmittance and mechanical strength of sintered alumina. Mater Sci Eng, A 374:191–19510.1016/j.msea.2004.02.015 ↗
12. Krell A, Blank P, Ma H et al (2003) Transparent sintered corundum with high hardness and strength. J Am Ceram Soc 86:12–1810.1111/j.1151-2916.2003.tb03270.x ↗
13. Kumagai M, Messing GL (1985) Controlled transformation and sintering of a boehmite sol–gel by α-alumina seeding. J Am Ceram Soc 68:500–50510.1111/j.1151-2916.1985.tb15818.x ↗
14. Kwon S, Messing GL (2000) Sintering of mixtures of seeded boehmite and ultrafine α-alumina. J Am Ceram Soc 83:82–8810.1111/j.1151-2916.2000.tb01152.x ↗
15. Levin I, Brandon D (1998) Metastable alumina polymorphs: crystal structures and transition sequences. J Am Ceram Soc 81:1995–201210.1111/j.1151-2916.1998.tb02581.x ↗
16. Li JG, Sun XD (2000) Synthesis and sintering behavior of a nanocrystalline-alumina powder. Acta Mater 48:3103–311210.1016/S1359-6454(00)00115-4 ↗
17. McArdle JL, Messing GL (1988) Transformation and microstructure control in boehmite-derived alumina by ferric oxide seeding. Adv Ceram Mater 3:387–39210.1111/j.1551-2916.1988.tb00240.x ↗
18. McArdle JL, Messing GL (1989) Solid-phase epitaxy of boehmite-derived α-alumina on hematite seed crystals. J Am Ceram Soc 72:864–86710.1111/j.1151-2916.1989.tb06235.x ↗
19. Nofz M, Stösser R (2005) The thermally induced transformation of pseudoboehmite gels―a comparison of the effects of corundum seeding and iron doping. J Eur Ceram Soc 25:1095–110710.1016/j.jeurceramsoc.2004.04.014 ↗
20. Nordahl CS, Messing GL (1998) Thermal analysis of phase transformation kinetics in α-Al2O3 seeded boehmite and γ-Al2O3. Thermochim Acta 318:187–19910.1016/S0040-6031(98)00343-8 ↗
21. Prouzet E, Fargeot D, Baumard JF (1990) Sintering of boehmite-derived transition alumina seeded with corundum. J Mater Sci Lett 9:779–78110.1007/BF00720156 ↗
22. Sugiyama K, Shinohara AH, Saito F, Waseda Y (1994) Study on dry grinding of gibbsite (hydrargillite). Mineral J 17:101–11010.2465/minerj.17.101 ↗
23. Teh EJ, Leong YK, Liu Y (2011) Isomerism and solubility of benzene mono- and dicarboxylic acid: its effect on alumina dispersions. Langmuir 27:49–5810.1021/la1045783 ↗
24. Tonejc A, Stubicar M, Tonejc AM, Kosanovi K, Suboti B, Smit I (1994) Transformation of γ-AlOOH (boehmite) and Al(OH)3 (gibbsite) to α-Al2O3 (corundum) induced by high energy ball milling. J Mater Sci Lett 13:519–52010.1007/BF00540186 ↗
25. Tsukada T, Segawa H, Yasumori A, Okada K (1999) Crystallinity of boehmite and its effect on the phase transition temperature of alumina. J Mater Chem 9:549–55310.1039/a806728g ↗
26. Tuan WH, Brook RJ (1990) The toughening of alumina with nickel inclusions. J Eur Ceram Soc 6:31–3710.1016/0955-2219(90)90032-B ↗
27. Tumbull D, Vonnegut B (1952) Nucleation catalysis. Ind Eng Chem 44:1292–129810.1021/ie50510a031 ↗
28. Urretavizcaya G, Lopez JMP (1992) Thermal transformation of sol–gel alumina into α-phase. Effect of α-Al2O3 seeding. Mater Res Bull 27:375–38510.1016/0025-5408(92)90067-A ↗
29. Wakao Y, Hibino T (1962) Effect of metallic oxides on α-transformation of alumina. Nagoya Kogyo Gijutsu Shikensho Hokoku 11:588–595
30. Xie ZP, Lu JW (2003) Influence of α-alumina seed on the morphology of grain growth in alumina ceramics from Bayer aluminum hydroxide. Mater Lett 57:2501–250810.1016/S0167-577X(02)01301-0 ↗
31. Xue LA, Chen I-W (1992) Influence of additives on γ- to α-transformation of alumina. J Mater Sci Lett 11:443–44510.1007/BF00731098 ↗
32. Yoshizawa Y, Hirao K, Kanzaki S (2004) Fabrication of low cost fine-grained alumina powders by seeding for high performance sintered bodies. J Eur Ceram Soc 24:325–33010.1016/S0955-2219(03)00226-7 ↗