JPWO2019035212A1 - 焼結体、回路部品および焼結体の製造方法 - Google Patents
焼結体、回路部品および焼結体の製造方法 Download PDFInfo
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Abstract
Description
以下に説明する実験例における焼結体の製造方法は、一例に過ぎない。
かさ密度および吸水率は、焼結体からJIS−R1601に記載の3×4×40mmの抗折棒を切り出し、アルキメデス法にて測定した。
表1Aおよび表1Bの各実験例の条件および評価について説明する。番号の後ろに*を付していない実験例は、本発明の実施例であり、*を付している実験例は、本発明に対する比較例である。
10 焼結体
12 導体
S1〜S4 ステップ
Claims (13)
- 焼結体であって、
主相としてアルミナ相を含み、SiとMnとを含む非晶質相と、コージェライト相とをさらに含み、
気孔率が、1.1%以上5.0%以下である。 - 請求項1に記載の焼結体であって、
XRD回折法で得られるコージェライトのメインピークの強度をI1、アルミナのメインピークの強度をI2として、I1/(I1+I2)が、0.20以上0.45以下である。 - 請求項2に記載の焼結体であって、
I1/(I1+I2)が、0.23以上0.40以下である。 - 請求項1ないし3のいずれか1つに記載の焼結体であって、
10GHzにおける比誘電率が、8.5以下である。 - 請求項1ないし4のいずれか1つに記載の焼結体であって、
10GHzにおける誘電正接が、5×10−4以下である。 - 請求項1ないし5のいずれか1つに記載の焼結体であって、
曲げ強度が、300MPa以上である。 - 請求項1ないし6のいずれか1つに記載の焼結体であって、
吸水率が、1.0%以下である。 - 請求項1ないし7のいずれか1つに記載の焼結体であって、
気孔の平均直径が、2.0μm以上5.5μm以下である。 - 回路部品であって、
請求項1ないし8のいずれか1つに記載の焼結体と、
前記焼結体の表面または内部に位置する導体と、
を備える。 - 焼結体の製造方法であって、
a)アルミナを70質量%以上85質量%以下、Si成分をSiO2換算で3質量%以上7質量%以下、Mn成分をMnO換算で3質量%以上6.5質量%以下、コージェライトを8質量%以上15質量%以下含み、これら4成分の合計が85質量%以上である粉末を調整する工程と、
b)前記粉末の成形体を得る工程と、
c)前記成形体を焼成する工程と、
を備える。 - 請求項10に記載の焼結体の製造方法であって、
前記c)工程において、焼成温度が、1200℃以上1400℃以下に1時間以上3時間以下保持される。 - 請求項10または11に記載の焼結体の製造方法であって、
前記a)工程において、Si成分のSiO2換算質量とMn成分のMnO換算質量との和が、前記粉末の11質量%以下である。 - 請求項10ないし12のいずれか1つに記載の焼結体の製造方法であって、
前記a)工程において、Si成分のSiO2換算質量とMn成分のMnO換算質量との比が、0.6以上2.0以下である。
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JP3287149B2 (ja) | 1994-02-14 | 2002-05-27 | 松下電器産業株式会社 | アルミナ質のセラミックス |
US7129453B2 (en) * | 1997-04-04 | 2006-10-31 | Dalton Robert C | Artificial dielectric systems and devices with sintered ceramic matrix material |
JP3924406B2 (ja) | 1999-09-30 | 2007-06-06 | 京セラ株式会社 | アルミナ質焼結体及びその製造方法、並びに配線基板及びその製造方法 |
JP3559495B2 (ja) | 2000-03-28 | 2004-09-02 | 京セラ株式会社 | 誘電体磁器組成物およびそれを用いた誘電体共振器並びに非放射性誘電体線路 |
JP4897163B2 (ja) | 2001-09-19 | 2012-03-14 | 太平洋セメント株式会社 | アルミナ質焼結体の製造方法 |
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JP2004115290A (ja) | 2002-09-24 | 2004-04-15 | Kyocera Corp | 複合酸化物焼結体及びその製造方法並びに配線基板 |
JP4540297B2 (ja) * | 2003-02-25 | 2010-09-08 | 京セラ株式会社 | 低温焼成磁器組成物および低温焼成磁器並びに配線基板 |
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US10486332B2 (en) * | 2015-06-29 | 2019-11-26 | Corning Incorporated | Manufacturing system, process, article, and furnace |
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