Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2005-08-30
2005-08-30
Marcantoni, Paul (Department: 1755)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S606000, C423S608000
Reexamination Certificate
active
06936235
ABSTRACT:
The present invention discloses a process for the preparation of zirconium tungstate (ZrW2O8) ceramic body, comprising a reactive sintering step to react and sinter powders of the raw materials comprising a Zr-containing compound and a W-containing compound to form a zirconium tungstate ceramic body. The addition of zirconium tungstate powders as the seeds in the process can effectively reduce the steps, shorten the preparation time, lower the sintering temperature and duration, save the cost, and provide the zirconium tungstate ceramic body with uniform microstructure. Also, a process for the preparation of modified zirconium tungstate ceramic body is disclosed, by forming a second phase in the zirconium tungstate ceramic body to tune the thermal expansion coefficient of the zirconium tungstate ceramic body. The present invention also relates to the use of the modified zirconium tungstate ceramic body to provide a temperature compensated fiber bragg grating (FBG) device.
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Lin John
Lo Yu-Lung
Wen Hui-Ling
Broptics Technology Inc.
Ladas & Parry
Marcantoni Paul
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