Two phase compound microwave dielectric ceramic having medium dielectric constant, and preparation method thereof
The invention relates to a two phase compound microwave dielectric ceramic having a medium dielectric constant, and a preparation method thereof. A molar ratio composition formula of the ceramic material is xBa(Zn1/3Nb2/3)O3+(1-x)ZnNb2O6, wherein 0.25
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| creator | SHI FANGJUN ZHANG LI'NA HU GUOXIN LI ZHIQIANG ZHANG DASHUAI GAO FENG |
| description | The invention relates to a two phase compound microwave dielectric ceramic having a medium dielectric constant, and a preparation method thereof. A molar ratio composition formula of the ceramic material is xBa(Zn1/3Nb2/3)O3+(1-x)ZnNb2O6, wherein 0.25 |
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A molar ratio composition formula of the ceramic material is xBa(Zn1/3Nb2/3)O3+(1-x)ZnNb2O6, wherein 0.25 <= x <= 0.40 and x is a mole percent. The preparation method comprises the steps of pre-synthesizing ZnNb2O6 and Ba(Zn1/3Nb2/3)O3 by a solid phase reaction of ZnO, Nb2O5 and BaCO3; weighing according to a chemical general formula; mixing; milling for two times; drying; pressing powder into cylindrical bodies by isostatic pressing; sintering for 2 h and cooling. The invention provides a novel material having a medium dielectric constant, high Q*f value and nearly zero temperature coefficient of resonance frequency. A preparation process matching with the material is provided by the invention; the microwave dielectric ceramic with good quality is obtained; and selection scope of microwave dielectric application materials is broadened.</description><language>chi ; eng</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; LIME, MAGNESIA ; METALLURGY ; REFRACTORIES ; SLAG ; TREATMENT OF NATURAL STONE</subject><creationdate>2014</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=20140205&DB=EPODOC&CC=CN&NR=103553603A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140205&DB=EPODOC&CC=CN&NR=103553603A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SHI FANGJUN</creatorcontrib><creatorcontrib>ZHANG LI'NA</creatorcontrib><creatorcontrib>HU GUOXIN</creatorcontrib><creatorcontrib>LI ZHIQIANG</creatorcontrib><creatorcontrib>ZHANG DASHUAI</creatorcontrib><creatorcontrib>GAO FENG</creatorcontrib><title>Two phase compound microwave dielectric ceramic having medium dielectric constant, and preparation method thereof</title><description>The invention relates to a two phase compound microwave dielectric ceramic having a medium dielectric constant, and a preparation method thereof. A molar ratio composition formula of the ceramic material is xBa(Zn1/3Nb2/3)O3+(1-x)ZnNb2O6, wherein 0.25 <= x <= 0.40 and x is a mole percent. The preparation method comprises the steps of pre-synthesizing ZnNb2O6 and Ba(Zn1/3Nb2/3)O3 by a solid phase reaction of ZnO, Nb2O5 and BaCO3; weighing according to a chemical general formula; mixing; milling for two times; drying; pressing powder into cylindrical bodies by isostatic pressing; sintering for 2 h and cooling. The invention provides a novel material having a medium dielectric constant, high Q*f value and nearly zero temperature coefficient of resonance frequency. A preparation process matching with the material is provided by the invention; the microwave dielectric ceramic with good quality is obtained; and selection scope of microwave dielectric application materials is broadened.</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>CONCRETE</subject><subject>LIME, MAGNESIA</subject><subject>METALLURGY</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNzLEKwjAUheEuDqK-w3VXUELdpShOTt3LJTk1gSY3Jmn7-nZwcXM6w_9x1tW7nYWi5QzS4qOMwZB3OsnME8g4DNAlOU0aiZdAlicXXuRh3Oh_gIRcOJQD8fIREyInLk7CYosVQ8UiQfpttep5yNh9d1Pt77e2eRwRpUOOrBFQuuZ5Pqm6VpeTuqp_zAf3h0RH</recordid><startdate>20140205</startdate><enddate>20140205</enddate><creator>SHI FANGJUN</creator><creator>ZHANG LI'NA</creator><creator>HU GUOXIN</creator><creator>LI ZHIQIANG</creator><creator>ZHANG DASHUAI</creator><creator>GAO FENG</creator><scope>EVB</scope></search><sort><creationdate>20140205</creationdate><title>Two phase compound microwave dielectric ceramic having medium dielectric constant, and preparation method thereof</title><author>SHI FANGJUN ; ZHANG LI'NA ; HU GUOXIN ; LI ZHIQIANG ; ZHANG DASHUAI ; GAO FENG</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN103553603A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2014</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>CONCRETE</topic><topic>LIME, MAGNESIA</topic><topic>METALLURGY</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>SHI FANGJUN</creatorcontrib><creatorcontrib>ZHANG LI'NA</creatorcontrib><creatorcontrib>HU GUOXIN</creatorcontrib><creatorcontrib>LI ZHIQIANG</creatorcontrib><creatorcontrib>ZHANG DASHUAI</creatorcontrib><creatorcontrib>GAO FENG</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SHI FANGJUN</au><au>ZHANG LI'NA</au><au>HU GUOXIN</au><au>LI ZHIQIANG</au><au>ZHANG DASHUAI</au><au>GAO FENG</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Two phase compound microwave dielectric ceramic having medium dielectric constant, and preparation method thereof</title><date>2014-02-05</date><risdate>2014</risdate><abstract>The invention relates to a two phase compound microwave dielectric ceramic having a medium dielectric constant, and a preparation method thereof. A molar ratio composition formula of the ceramic material is xBa(Zn1/3Nb2/3)O3+(1-x)ZnNb2O6, wherein 0.25 <= x <= 0.40 and x is a mole percent. The preparation method comprises the steps of pre-synthesizing ZnNb2O6 and Ba(Zn1/3Nb2/3)O3 by a solid phase reaction of ZnO, Nb2O5 and BaCO3; weighing according to a chemical general formula; mixing; milling for two times; drying; pressing powder into cylindrical bodies by isostatic pressing; sintering for 2 h and cooling. The invention provides a novel material having a medium dielectric constant, high Q*f value and nearly zero temperature coefficient of resonance frequency. A preparation process matching with the material is provided by the invention; the microwave dielectric ceramic with good quality is obtained; and selection scope of microwave dielectric application materials is broadened.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE |
| title | Two phase compound microwave dielectric ceramic having medium dielectric constant, and preparation method thereof |
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