Author:
Gilshtein Evgeniia,Pfeiffer Stefan,Rossell Marta D.,Sastre Jordi,Gorjan Lovro,Erni Rolf,Tiwari Ayodhya N.,Graule Thomas,Romanyuk Yaroslav E.
Abstract
AbstractThe sintering of alumina (Al2O3) traditionally occurs at high temperatures (up to ca. 1700 °C) and in significantly long times (up to several hours), which are required for the consolidation of the material by diffusion processes. Here we investigate the photonic sintering of alumina particles using millisecond flash lamp irradiation with extreme heating rates up to 108 K/min. The limitation of the low visible light absorption of alumina is resolved by adding colored α-Fe2O3 nanoparticles, which initiated the grain growth during sintering. After the millisecond-long light pulses from a xenon flash lamp, a bimodal mixture of α-Al2O3 precursor particles was sintered and iron segregation at the grain boundaries was observed. The proposed photonic sintering approach based on doping with colored centers may be extended to other refractory ceramics with low absorption in the visible light range once appropriate high-absorbing dopants are identified.
Publisher
Springer Science and Business Media LLC
Reference35 articles.
1. Vergnon, P., Juillet, F. & Teichner, S. Effect of increasing rate of temperature on sintering of pure alumina homodispersed particles. Rev. Int. Hautes Temp. Refract 3, 409–419 (1966).
2. García, D. E., Seidel, J., Janssen, R. & Claussen, N. Fast firing of alumina. J. Eur. Ceram. Soc. 15, 935–938 (1995).
3. Lin, F. J. T., de Jonghe, L. C. & Rahaman, M. N. Initial coarsening and microstructural evolution of fast-fired and MgO-doped Al2O3. J. Am. Ceram. Soc. 80, 2891–2896 (1997).
4. Brook, R. Fabrication principles for the production of ceramics with superior mechanical properties. Proc. Br. Ceram. Soc. 32, 7–24 (1982).
5. Johnson, D. L. In Materials Science Research: Volume 16 Sintering and Heterogeneous Catalysis (eds Kuczynski, G. C. et al.) 243–252 (Springer, Berlin, 1984).
Cited by
11 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献