JP5582150B2 - セラミック焼結体およびその製造方法 - Google Patents
セラミック焼結体およびその製造方法 Download PDFInfo
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- JP5582150B2 JP5582150B2 JP2011553804A JP2011553804A JP5582150B2 JP 5582150 B2 JP5582150 B2 JP 5582150B2 JP 2011553804 A JP2011553804 A JP 2011553804A JP 2011553804 A JP2011553804 A JP 2011553804A JP 5582150 B2 JP5582150 B2 JP 5582150B2
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- 239000000919 ceramic Substances 0.000 title claims description 126
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 229910010293 ceramic material Inorganic materials 0.000 claims description 55
- 239000013078 crystal Substances 0.000 claims description 41
- 238000010304 firing Methods 0.000 claims description 33
- 239000011521 glass Substances 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000010453 quartz Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 229910001597 celsian Inorganic materials 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 5
- 238000000634 powder X-ray diffraction Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 description 50
- 239000004020 conductor Substances 0.000 description 27
- 239000010410 layer Substances 0.000 description 21
- 238000005452 bending Methods 0.000 description 17
- 239000012071 phase Substances 0.000 description 17
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 229910010413 TiO 2 Inorganic materials 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 8
- 239000007858 starting material Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229910015999 BaAl Inorganic materials 0.000 description 3
- 229910016066 BaSi Inorganic materials 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 101100513612 Microdochium nivale MnCO gene Proteins 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010344 co-firing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 238000013001 point bending Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910001252 Pd alloy Inorganic materials 0.000 description 1
- 229910008484 TiSi Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
(1)セラミックグリーンシートの作製
まず、出発原料として、いずれも粒径2.0μm以下のSiO2、BaCO3、Al2O3、MnCO3、TiO2およびMg(OH)2の各セラミック粉末を準備した。次に、これら出発原料粉末を、焼成後に表1に示す組成比率となるように秤量し、湿式混合粉砕した後、乾燥し、得られた混合物を750〜1000℃で1〜3時間仮焼して原料粉末を得た。上記BaCO3は焼成後にBaOになり、上記MnCO3は焼成後にMnOになり、上記Mg(OH)2は焼成後にMgOになるものである。
次に、得られたセラミックグリーンシートを所定の大きさにカットした後、複数枚を積層し、次いで、温度60〜80℃および圧力1000〜1500kg/cm2の条件で熱圧着し、生の積層体を得た。そして、焼成後の積層体サイズが30.0mm×4.5mm×1.0mm(厚み)となるように、生の積層体をカットした。
次に、カットした生の積層体を、窒素−水素の非酸化性雰囲気中において、表2に示すように、最高温度を970〜1050℃の範囲の温度とし、最高温度保持時間を30〜480分間の範囲の時間として焼成し、焼結した板状のセラミック基板試料を得た。
セラミック基板試料の抗折強度を、3点曲げ強度試験(JIS−R1061)によって評価した。
セラミック基板試料を粉末化し、X線回析法により回析ピーク角度2θ=10〜40°の範囲で測定した回折ピークから析出結晶の同定を行ない、基板試料中の析出結晶相として、クォーツ(SiO2)、アルミナ(Al2O3)、フレスノイト(Ba2TiSiO8)、サンボルナイト(BaSi2O5)、セルシアン(BaAl2Si2O8)が少なくとも析出していることを確認した。
セラミック基板試料に対して、その断面が露出するように研磨を施し、走査型顕微鏡を用いて、析出したフレスノイトの粒径を10点測定し、平均化した値を平均粒径とした。フレスノイトの同定については、透過型顕微鏡の元素マッピング分析から、フレスノイトの構成元素(Ba、Si、Ti、O)の偏析が最も多く見られる結晶をフレスノイトと判断した。
(1)セラミックグリーンシートの作製
実験例1の場合と同様、まず、出発原料として、いずれも粒径2.0μm以下のSiO2、BaCO3、Al2O3、MnCO3、TiO2およびMg(OH)2の各セラミック粉末を準備した。次に、これら出発原料粉末を、焼成後に表3に示す組成比率となるように秤量し、湿式混合粉砕した後、乾燥し、得られた混合物を750〜1000℃で1〜3時間仮焼して原料粉末を得た。
次に、実験例1の場合と同様にして、生の積層体を得た。
次に、カットした生の積層体を、窒素−水素の非酸化性雰囲気中において、最高温度を990℃とし、最高温度保持時間を120分間として焼成し、焼結した板状のセラミック基板試料を得た。
実験例1の場合と同様、セラミック基板試料の抗折強度を、3点曲げ強度試験(JIS−R1061)によって評価した。
実験例1の場合と同様、セラミック基板試料を粉末化し、X線回析法により回析ピーク角度2θ=10〜40°の範囲で測定した回折ピークから析出結晶の同定を行ない、基板試料中の析出結晶相として、クォーツ(SiO2)、アルミナ(Al2O3)、フレスノイト(Ba2TiSiO8)、サンボルナイト(BaSi2O5)、セルシアン(BaAl2Si2O8)が少なくとも析出していることを確認するとともに、フレスノイト結晶の(201)面における回折ピーク強度Aとクォーツ結晶の(110)面における回折ピーク強度Bから、A/Bの関係を算出した。
2 セラミック層
3 積層体
Claims (3)
- クォーツ(Quartz)、アルミナ(Alumina)、フレスノイト(Fresnoite)、サンボルナイト(Sanbornite)およびセルシアン(Celsian)の各結晶相を含み、
粉末X線回析法により回析ピーク角度2θ=10〜40°の範囲で測定した前記フレスノイトの(201)面における回折ピーク強度Aと前記クォーツの(110)面における回折ピーク強度Bの関係が、A/B≧3.02であり、
前記フレスノイト結晶相の平均結晶粒径が5μm以下である
ことを特徴とする、セラミック焼結体。 - Si酸化物、Ba酸化物およびAl酸化物を含む主成分セラミック材料と、Mn酸化物およびTi酸化物を含む副成分セラミック材料とを含み、実質的にCr酸化物およびB酸化物のいずれをも含まない非ガラス系の低温焼結セラミック材料を焼結させることによって得られたものである、請求項1に記載のセラミック焼結体。
- 請求項1または2に記載のセラミック焼結体の製造方法であって、
Si酸化物、Ba酸化物およびAl酸化物を含む主成分セラミック材料と、Mn酸化物およびTi酸化物を含む副成分セラミック材料とを含み、実質的にCr酸化物およびB酸化物のいずれをも含まない非ガラス系の低温焼結セラミック材料を含む、セラミックグリーンシートを準備する工程と、
複数の前記セラミックグリーンシートを積層することによって、生の積層体を作製する工程と、
前記生の積層体を焼成する工程と
を備え、
前記焼成工程において、最高温度が980〜1000℃の範囲であることを特徴とする、
セラミック焼結体の製造方法。
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