Search Results

1 - 7 of 7 items :

  • "transparent ceramics" x
Clear All
Fabrication of highly-transparent Er:CaF2 ceramics by hot-pressing technique

Abstract

Highly-transparent trivalent erbium ion doped calcium fluoride (5 mol % Er:CaF2) ceramics were fabricated by a hotpressing (HP) method using high-purity Er:CaF2 nanoparticles, which were synthesized by co-precipitation method. The mean grain size of the nanoparticles was about 24.7 nm. The nanoparticles were sintered at 600 °C, 700 °C, 800 °C and 900 °C, respectively, for 30 min under a uniaxial pressure of 30 MPa and vacuum of 10−3 Pa with 1 mol % lithium fluoride (LiF) as sintering additive. The 5 mol % Er:CaF2 ceramics sintered at 800 °C exhibits high density and pore-free microstructure with an average grain size of about 8 μm. The optical transmittance of the transparent ceramics is close to 85 % at visible and nearinfrared wavelengths. The strong and broad absorptions peaks corresponding to characteristic absorption of trivalent erbium ions make the ceramics a potential candidate for infrared and upconversion laser operating.

Open access
Research on Technical Ceramics and their Industrial Application: Preparation Techniques and Properties of Transparent AlON Ceramics

Abstract

Aluminium oxynitride (AlON) has a unique thermal and chemical stability that makes it the perfect candidate for a wide range of applications. This article provides a brief description and comparison of the most common AlON preparation methods along with their advantages and disadvantages. Although there has been extensive research on the material, especially more recently because of increased commercial interest, extensive systematic powder synthesis and processing studies have not been carried out to determine alternate, more cost efficient routes to fully dense transparent bodies. Further optimization of reaction sintering and transient liquid phase sintering could be important processing routes.

Open access
Preliminary Study In Preparation Of Nd3+: YAG And Sm3+: Y2O3 Transparent Ceramics

Abstract

In the present work we present preliminary research on producing of transparent polycrystalline ceramics. Samarium doped Yttrium oxide (1%, 3% and 5%) and Neodymium (1%) doped YAG (Y3Al5O12) translucent ceramics were fabricated by solid-state reaction. Commercial nanopowders was used as the starting materials: Sm2O3 (6μm) and Y2O2 (20-50 nm) for Sm3+: Y2O3 and α-Al2O3, Y2O3 and Nd2O3 (20-50 nm) for Nd3+: YAG. For the preparation of Nd3+: YAG, 0.5 wt% tetraethyl orthosilicate (TEOS) was use as sintering additive, and 1 wt % PEG (polyethylene glycol-400) as dispersant.

Open access
Defect Luminescence of Yag Nanopowders and Crystals

References Ikesue, A., Yan Lin Aung, Yoda, T., Nakayama, S., & Kamimura, T. (2007). Fabrication and laser performance of polycrystal and single crystal Nd:YAG by advanced ceramic processing. Opt. Mat., 29 (10), 1289-1294. Pankratov, V., Shirmane, L., Chudoba, T., Gluchowski, P., Hreniak, D., Strek, W., & Lojkowski, W. (2010). Peculiarities of luminescent properties of cerium doped YAG transparent ceramics. Rad. Measur., 45 , 392-394. Pujats, A., & Springis, M. (2001). The F

Open access
Effect of in Doping on the ZnO Powders Morphology and Microstructure Evolution of ZnO:In Ceramics as a Material for Scintillators

., & Broqvist, P. (2014). Large-scale SCC-DFTB calculations of reconstructed polar ZnO surfaces. Surf. Sci. 628, 50–61. 8. Wilkinson, J., Ucer, K.B., & Williams, R.T. (2005). The oscillator strength of extended exciton states and possibility for very fast scintillators. Nucl. Instr. and Methods. Phys. Res. A. 537 , 66–70. 9. Rodnyi, P. A., Chernenko, K. A., Gorokhova, E. I., Kozlovskii, S.S., Khanin, V.M., & Khodyuk, I.V. (2012). Novel scintillation material – ZnO transparent ceramics. IEEE Trans. Nucl. Sci. 59(5) , 2152–2155. 10. Kelly, J. P., & Graeve

Open access
Preparation and Up-Conversion Luminescence of Yb3+/Er3+/GZO Ceramics

.1080/10426914.2014.994777. 4. Liu, Z.L., Zhou, H.Y., Du, L.P. & Yang, H. (2012). Synthesis and luminescence properties of Y2O3:Tb3+, Dy3+. Mater. Manuf. Process. 27 (12), 1306-1309. DOI: 10.1080/10426914.2012.663146. 5. Camargo, A.S.S., Possatto, J.F., Nunes, L.A.D.O., Botero, É.R., Andreeta, É.R.M., Garcia, D. & Eiras, J.A. (2006). Infrared to visible frequency upconversion temperature sensor based on Er3+-doped PLZT transparent ceramics. Solid State Commun. 137(1-2), 1-5. DOI: 10.1016/j.ssc.2005.10.020. 6. Pan, W., Zhao, J. & Chen, Q. (2015). Fabricating

Open access
Optical properties of translucent zirconia: A review of the literature

DW, Gu F, Tang DN, Dong ZL, et al. Transparent ceramics: processing materials and applications. Prog Solid State Chem 2013; 41: 20-54. 10.1016/j.progsolidstchem.2012.12.002 Wang SF Zhang J Luo DW Gu F Tang DN Dong ZL et al Transparent ceramics: processing materials and applications Prog Solid State Chem 2013 41 20 54 50 Krell A, Hutzler T, Klimke J. Transparent ceramics: transmission physics and consequences for materials selection, manufacturing and applications. J Eur Ceram Soc 2009; 29: 207-21. 10.1016/j.jeurceramsoc.2008

Open access