Effect of LiF on the optical transmittance of magnesium aluminate spinel

Fahui Li; Hong Lin; Jianbao Li; Muyun Lei; Cunxin Huang; Fang Wen

doi:10.1007/s11595-012-0497-0

Journal of Wuhan University of Technology Materials Science Edition ›› 2012, Vol. 27 ›› Issue (3) : 526 -528. DOI: 10.1007/s11595-012-0497-0

Article

Effect of LiF on the optical transmittance of magnesium aluminate spinel

Fahui Li ¹^,²
, Hong Lin ¹^,^{^b}
, Jianbao Li ¹^,³
, Muyun Lei ⁴
, Cunxin Huang ²
, Fang Wen ⁴

Author information +

History +

PDF

Abstract

The effect of LiF as a sintering aid to the optical transparency of magnesium aluminate (MgAl₂O₄) spinel ceramics is studied. The spinel ceramics is prepared in a process proved to be suitable for commercial production. LiF, in different concentrations ranging from 0–2.5 wt%, is doped into MgAl₂O₄ powders prepared by sol-gel method. Sample MgAl₂O₄ ceramic discs are fabricated by ball milling, cold pressing, and hot-pressing, or hot-isostatic-pressing of the powder mixtures. Optical transparency measurements show that, hot-pressed samples exhibit higher transparency when more LiF is added. While for hot-isostatic pressed samples, excessive LiF content leads to a decrease in optical transparency. The optimal LiF doping quantity is suggested for the present technique.

Keywords

transperent ceramics / spinel / liF / sintering aid

Cite this article

Download citation ▾

Fahui Li, Hong Lin, Jianbao Li, Muyun Lei, Cunxin Huang, Fang Wen. Effect of LiF on the optical transmittance of magnesium aluminate spinel. Journal of Wuhan University of Technology Materials Science Edition, 2012, 27(3): 526-528 DOI:10.1007/s11595-012-0497-0

登录浏览全文

4963

注册一个新账户忘记密码

References

Publishing order | Descend order by publishing year | Descend order by cited within

[1]	Gilde G. A., Patel P. J., Patterson M. Comparison of Hot-Pressing, Rate-Controlled Sintering and Microwave Sintering of Magnesium Aluminate Spinel for Optical Applications[J]. Proc. SPIE, 1995, 3705: 94-104.

[2]	Harris D. C. History of Development of Polycrystalline Optical Spinel in the U.S.[J]. Proc. SPIE, 2005, 5786: 1-22.

[3]	Greskovich C., Woods K. N. Fabrication of Transparent ThO₂-Doped Y₂O₃[J]. Am. Ceram. Soc. Bull., 1973, 52: 473-478.

[4]	Patterson M., Caiazza J. E., Roy D. W. Transparent Spinel Development[J]. Proc. SPIE, 2000, 4102: 59-68.

[5]	Cook R., Kochis M., Reimanis I. A New Powder Production Route for Transparent Spinel Windows: Powder Synthesis and Window Properties[J]. Proc. SPIE, 2005, 5786: 41-47.

[6]	D W Roy, J L Hastert. Method for Manufacturing a Transparent Ceramic Body[P]. U. S. Patent 3,974,249-264/65, 1976

[7]	Lange F. F., Clarke D. R. Morphological Changes of an Intergranular Film in a Polycrystalline Spinel[J]. J. Am. Ceram. Soc., 1982, 65: 502-506.

[8]	Roy D. W., Hastert J. L. Polycrystalline MgAl₂O₄ Spinel for High Temperature Windows[J]. Ceram. Eng. Sci. Proc., 1983, 4(7/8): 502-509.

[9]	Lepkova D., Baatarjav A., Pavlova L. Effect of Additives on the Firing and the Properties of Magnesium Spinel Ceramics[J]. Int. Ceram., 1993, 42(2): 90-92.

[10]	Gilde G., Patel P., Patterson P., . Evaluation of Hot Pressing and Hot Isostastic Pressing Parameters on the Optical Properties of Spinel[J]. J. Am. Ceram. Soc., 2005, 88(10): 2 747-2 751.

[11]	Lei M. Study on the Properties and Application of Transparent Magnesium Aluminate Spinel Ceramic[D], 2009 Beijing Beijing University of Science and Technology