Method of producing optically transparent yttrium oxide Export

@misc{citeulike:1403484, abstract = {A transparent yttrium oxide ceramic is made by densifying a yttrium oxide power without addition of dopants. The yttrium oxide powder is consolidated into a body of a predetermined shape and sintered to a density such that any remaining porosity is sealed from the surrounding atmosphere. The closed porosity body is then subjected to an elevated pressure and temperature to provide the body with substantially 100\% of theoretical density while the body is disposed adjacent an oxygen supplying media. The oxygen supplying media is a ceramic media used to provide an oxygen partial pressure during the densification step ast the elevated pressure and temperature. After this step, a clear transparent body is provided without the need for any further high temperature processing such as a post densification anneal to restore oxygen stoichiometry to the body. The resulting body has substantial transparency over the wavelength range of 0.6 .mu.m to 7 .mu.m.}, author = {Borglum, Brian P.}, citeulike-article-id = {1403484}, citeulike-linkout-0 = {http://www.google.com/patents?vid=USPAT5004712}, citeulike-linkout-1 = {http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F5004712}, day = {2}, journal = {United States Patent}, keywords = {ambient, hip, oxide, transparent\_ceramic, yttria}, month = {April}, posted-at = {2007-06-21 23:48:01}, priority = {4}, title = {Method of producing optically transparent yttrium oxide}, url = {http://www.google.com/patents?vid=USPAT5004712}, volume = {5004712}, year = {1991} }

TY - GEN ID - citeulike:1403484 L3 - citeulike-article-id:1403484 N2 - A transparent yttrium oxide ceramic is made by densifying a yttrium oxide power without addition of dopants. The yttrium oxide powder is consolidated into a body of a predetermined shape and sintered to a density such that any remaining porosity is sealed from the surrounding atmosphere. The closed porosity body is then subjected to an elevated pressure and temperature to provide the body with substantially 100% of theoretical density while the body is disposed adjacent an oxygen supplying media. The oxygen supplying media is a ceramic media used to provide an oxygen partial pressure during the densification step ast the elevated pressure and temperature. After this step, a clear transparent body is provided without the need for any further high temperature processing such as a post densification anneal to restore oxygen stoichiometry to the body. The resulting body has substantial transparency over the wavelength range of 0.6 .mu.m to 7 .mu.m. JF - United States Patent TI - Method of producing optically transparent yttrium oxide VL - 5004712 KW - ambient KW - hip KW - oxide KW - transparent_ceramic KW - yttria AU - Borglum, Brian PY - 1991/04/02/ UR - http://www.google.com/patents?vid=USPAT5004712 ER -