JP2010159197A - チタン酸アルミニウム系セラミックスの製造方法 - Google Patents
チタン酸アルミニウム系セラミックスの製造方法 Download PDFInfo
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Abstract
【解決手段】本発明は、チタン源化合物、アルミニウム源化合物および好ましくはマグネシウム源化合物と、屈服点が700℃以上および/または900℃の粘度値が1.0×106ポイズ以上のガラスフリットとを含む原材料混合物を焼成するチタン酸アルミニウム系セラミックスの製造方法である。
【選択図】なし
Description
AT化率(%)=100×IAT/(IAT +IT)・・・(1)
熱分解率(%)=100−100×IAT2/(IAT2 +IT2 )・・・(2)
チタニア粉末〔デュポン(株)、「R−900」〕20.0g、αアルミナ粉末〔住友化学(株)製、「AES−12」〕27.4g、マグネシア粉末〔宇部マテリアル(株)、「UC−95M」〕0.8gおよびガラスフリット〔タカラスタンダード(株)製、型番「CK0832M2」、中心粒径7.4μm、屈服点768℃(メーカー測定値)、粘度値1.1×109ポイズ〕1.8gを、アルミナビーズ〔直径15mm〕5kgと共にアルミナ製粉砕容器〔内容積3.3L〕に投入した。このチタン酸アルミニウム系セラミックス中のチタン酸アルミニウムマグネシウムのx値は約0.09である。
実施例1で用いた原料のガラスフリットの代わりに長石〔特殊精礦(株)より入手した大平長石、型番「SS−300」〕を用いた以外は実施例1と同様に操作し、チタン酸アルミニウム系セラミックスの粉末を得た。このチタン酸アルミニウム系セラミックスのAT化率を求めたところ100%であった。また、得られたチタン酸アルミニウム系セラミックスの熱分解率を測定したところ3.7%だった。またこのチタン酸アルミニウム系セラミックス粉末の形状をSEMにて観察したところ、粉末を構成する粒子のほとんどが概ね球形であった。また、焼結体密度の値を測定したところ3.21g/cm3の値を示し、熱膨張係数の値は2.6×10−6K−1の値を示した。
原料のガラスフリット〔タカラスタンダード(株)より入手したガラスフリット、型番「CK0314M2」、中心粒径7μm相当、屈服点610℃(メーカー測定値)、粘度値4.9×104ポイズ〕を用いた以外は実施例1と同様に操作し、チタン酸アルミニウム系セラミックスの粉末を得た。このチタン酸アルミニウム系セラミックスのAT化率を求めたところ100%であった。また、得られたチタン酸アルミニウム系セラミックスの熱分解率を測定したところ100%だった。またこのチタン酸アルミニウム系セラミックスの粉末の形状をSEMにて観察したところ、粉末を構成する粒子のほとんどが概ね球形であった。また、焼結体密度の値を測定したところ3.36g/cm3の値を示した。
Claims (14)
- チタン源化合物、アルミニウム源化合物、並びに屈服点が700℃以上および/または900℃の粘度値が1.0×106ポイズ以上のガラスフリットを含む原材料混合物を焼成することを特徴とするチタン酸アルミニウム系セラミックスの製造方法。
- チタニア換算のチタン源化合物の使用量は、チタニア換算のチタン源化合物の使用量およびアルミナ換算のアルミニウム源化合物の使用量の合計量100質量部あたり、30質量部〜70質量部である請求項1に記載の製造方法。
- ガラスフリットの使用量は、チタニア換算のチタン源化合物の使用量およびアルミナ換算のアルミニウム源化合物の使用量の合計量100質量部あたり、0.1質量部〜20質量部である請求項1または2に記載の製造方法。
- 前記原材料混合物が、さらにマグネシウム源化合物を含む請求項1〜3のいずれか一項に記載のチタン酸アルミニウム系セラミックスの製造方法。
- マグネシア換算のマグネシウム源化合物の使用量は、チタニア換算のチタン源化合物の使用量およびアルミナ換算のアルミニウム源化合物の使用量の合計量100質量部あたり、0.1質量部〜10質量部である請求項4に記載の製造方法。
- 前記マグネシウム源化合物が、酸化マグネシウムおよび/またはマグネシアスピネルである請求項4または5に記載の製造方法。
- 前記チタン源化合物が、酸化チタンである請求項1〜6のいずれか一項に記載の製造方法。
- 前記アルミニウム源化合物が、酸化アルミニウムおよび/またはマグネシアスピネルである請求項1〜7のいずれか一項に記載の製造方法。
- 前記ガラスフリットが、SiO2を50質量%以上含有するケイ酸ガラスである請求項1〜8のいずれか一項に記載の製造方法。
- 前記原材料混合物を、乾式または湿式で混合する請求項1〜9のいずれか一項に記載の製造方法。
- 乾式または湿式での混合に際し、粉砕メディアの共存下に粉砕容器内で粉砕混合する請求項10に記載の製造方法。
- 前記粉砕メディアは、直径1mm〜100mmのアルミナボールまたはジルコニアボールである請求項11に記載の製造方法。
- 前記粉砕容器を、2mm〜20mmの振幅で振動させる請求項11または12に記載の製造方法。
- 請求項1〜13のいずれか一項に記載の製造方法で、チタン酸アルミニウム系セラミックスを得、得られたチタン酸アルミニウム系セラミックスを解砕することを特徴とするチタン酸アルミニウム系セラミックス粉末の製造方法。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010116289A (ja) * | 2008-11-12 | 2010-05-27 | Sumitomo Chemical Co Ltd | チタン酸アルミニウム系セラミックスの製造方法 |
JP2010138060A (ja) * | 2008-09-04 | 2010-06-24 | Sumitomo Chemical Co Ltd | チタン酸アルミニウム系セラミックスの製造方法 |
JP2017538651A (ja) * | 2014-11-19 | 2017-12-28 | コーニング インコーポレイテッド | 制御されたサイズ分布を有するセラミック粉末 |
Families Citing this family (13)
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CN101925538A (zh) * | 2008-01-21 | 2010-12-22 | 住友化学株式会社 | 钛酸铝镁的制备方法 |
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JP2011153066A (ja) * | 2009-12-28 | 2011-08-11 | Sumitomo Chemical Co Ltd | チタン酸アルミニウム系セラミックスの製造方法 |
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Also Published As
Publication number | Publication date |
---|---|
KR20110020235A (ko) | 2011-03-02 |
TW201010962A (en) | 2010-03-16 |
EP2295388A4 (en) | 2011-11-02 |
WO2009154219A1 (ja) | 2009-12-23 |
CN102066287A (zh) | 2011-05-18 |
EP2295388A1 (en) | 2011-03-16 |
US20110124484A1 (en) | 2011-05-26 |
JP5122527B2 (ja) | 2013-01-16 |
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