TRANSPARENT ALUMINA-BASED PLATE AND METHOD OF MAKING THEREOF
The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of...
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creator | Schlup, Andrew Costakis, William Youngblood, Jeffrey Paul Trice, Rodney Wayne |
description | The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of |
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Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of <15% over the wavelength range of 645-2500 nm, and a relative density of 99.00-99.95%.</description><language>eng</language><subject>CHEMISTRY ; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS ; INORGANIC CHEMISTRY ; METALLURGY ; PERFORMING OPERATIONS ; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER ; TRANSPORTING ; WORKING CEMENT, CLAY, OR STONE</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211125&DB=EPODOC&CC=US&NR=2021362369A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20211125&DB=EPODOC&CC=US&NR=2021362369A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Schlup, Andrew</creatorcontrib><creatorcontrib>Costakis, William</creatorcontrib><creatorcontrib>Youngblood, Jeffrey Paul</creatorcontrib><creatorcontrib>Trice, Rodney Wayne</creatorcontrib><title>TRANSPARENT ALUMINA-BASED PLATE AND METHOD OF MAKING THEREOF</title><description>The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of <15% over the wavelength range of 645-2500 nm, and a relative density of 99.00-99.95%.</description><subject>CHEMISTRY</subject><subject>COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>PERFORMING OPERATIONS</subject><subject>SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER</subject><subject>TRANSPORTING</subject><subject>WORKING CEMENT, CLAY, OR STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZLAJCXL0Cw5wDHL1C1Fw9An19fRz1HVyDHZ1UQjwcQxxVXD0c1HwdQ3x8HdR8HdT8HX09vRzVwjxcA1y9XfjYWBNS8wpTuWF0twMym6uIc4euqkF-fGpxQWJyal5qSXxocFGBkaGxmZGxmaWjobGxKkCAJTxKkM</recordid><startdate>20211125</startdate><enddate>20211125</enddate><creator>Schlup, Andrew</creator><creator>Costakis, William</creator><creator>Youngblood, Jeffrey Paul</creator><creator>Trice, Rodney Wayne</creator><scope>EVB</scope></search><sort><creationdate>20211125</creationdate><title>TRANSPARENT ALUMINA-BASED PLATE AND METHOD OF MAKING THEREOF</title><author>Schlup, Andrew ; Costakis, William ; Youngblood, Jeffrey Paul ; Trice, Rodney Wayne</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2021362369A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2021</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>PERFORMING OPERATIONS</topic><topic>SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER</topic><topic>TRANSPORTING</topic><topic>WORKING CEMENT, CLAY, OR STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>Schlup, Andrew</creatorcontrib><creatorcontrib>Costakis, William</creatorcontrib><creatorcontrib>Youngblood, Jeffrey Paul</creatorcontrib><creatorcontrib>Trice, Rodney Wayne</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Schlup, Andrew</au><au>Costakis, William</au><au>Youngblood, Jeffrey Paul</au><au>Trice, Rodney Wayne</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>TRANSPARENT ALUMINA-BASED PLATE AND METHOD OF MAKING THEREOF</title><date>2021-11-25</date><risdate>2021</risdate><abstract>The present disclosure provides a transparent alumina-based plate, and a hot-pressing method to make the transparent alumina-based plate from platelet alumina. Alumina powder with a platelet morphology was hot-pressed to transparency with pre-load pressures of about 0-8 MPa, maximum temperatures of about 1750-1825° C., maximum pressures of about 2.5-80 MPa, and isothermal hold times of 1-7 hours. A novel alumina-based plate has been prepared, wherein the plate has a thickness of 2-5 mm, an in-line transmission of at least 60-75% for a light with a wavelength range of 645-2500 nm, an in-line transmission variance of <15% over the wavelength range of 645-2500 nm, and a relative density of 99.00-99.95%.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER TRANSPORTING WORKING CEMENT, CLAY, OR STONE |
title | TRANSPARENT ALUMINA-BASED PLATE AND METHOD OF MAKING THEREOF |
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