JP5667218B2 - 反応性セラミック化によるゼノタイムセラミックの製造 - Google Patents
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Description
(I)基本的にY2O3(P2O5)yからなる組成および軟化温度Tsoftを有するYP−ガラスを提供し、ここで、yは、YP−ガラス中のP2O5のY2O3に対するモル比であって、1.6≦y≦9.0であり、ある特定の実施の形態では2.0≦y≦8.0であり、ある特定の実施の形態では3.0≦y≦6.5であり、ある特定の他の実施の形態では4.0≦y≦6.5であり;
(II)Y原料物質を提供し;
(III)溶融の際に、xに等しいP2O5のY2O3に対するモル比を有し、前記YP−ガラスの複数の粒子および前記Y原料物質の複数の粒子を含む混合物を得て;
(IV)ステップ(III)から得られた前記混合物をTsoftよりも高い温度T1まで加熱し、それによって第1のセラミックが得られる、
各工程を含む。
(V)ステップ(IV)から得られた前記第1のセラミックの複数の粒子を形成し;
(VI)前記第1のセラミックの粒子から圧縮未焼成体を成形し;
(VII)前記圧縮未焼成体を、1400℃より高い温度T2、ある特定の実施の形態では1500℃より高い、ある特定の実施の形態では1600℃より高い、ある特定の他の実施の形態では1700℃より高い、ある特定の他の実施の形態では1800℃より高い、ある特定の他の実施の形態では1900℃より高い温度T2まで加熱して、密度の高いバルクセラミック材料を得る
各工程を含む。
(I1)Y2O3粉末およびP2O5粉末から溶融ガラスを形成する;
(I2)Y2O3粉末およびH3PO4液から溶融ガラスを形成する;および
(I3)Y2O3材料物質およびP2O5材料物質から溶融ガラスを形成する。
(III−M−1)Y2O3粒子;
(III−M−2)基本的にY2O3(P2O5)zからなる組成式によって表わされる組成を有する第2のY原料物質の粒子[ここで、zは、YP−ガラス中のP2O5のY2O3に対するモル比であって、z<1であり、ある特定の実施の形態ではz<0.8、他の実施の形態ではz<0.5、ある特定の他の実施の形態ではz<0.3である];
(III−M−3)ステップ(IV)において、Y2O3内に移すことができる、第3のY原料物質の粒子。
添付の図面は、本発明のさらなる理解を提供することが意図されており、本明細書に取り込まれ、その一部を構成する。
ガラスフリット + 反応物質 → 所望のセラミック
ここで、ガラスフリットは、P豊富なYP−ガラス、およびY原料物質としての反応物質を含み、最終的な所望の製品のために追加のYおよび随意的なPを提供し、ガラスフリットと反応物質との高い温度反応が、所望の組成、結晶相およびそれらの集合を有する所望のセラミックを生じる。ガラスフリットは、比較的低い溶融温度を有することが望ましく、反応性セラミック化段階の間に反応物質を流し、湿らし、比較的低温において所望のセラミックの形成を効果的に促進する。反応性セラミック化におけるフリットの使用はまた、合成反応の前にガラスの流れを生じさせ、高密度化および比較的低い細孔率を生じさせる。
前駆体ガラス → 所望のセラミック
(V)ステップ(IV)から得られた前記第1のセラミックの複数の粒子を形成し;
(VI)前記第1のセラミックの粒子から圧縮未焼成体を成形し;
(VII)前記圧縮未焼成体を1400℃より高い、ある特定の実施の形態では1500℃より高い、ある特定の実施の形態では1600℃より高い、ある特定の他の実施の形態では1700℃より高い、ある特定の他の実施の形態では1800℃より高い、ある特定の他の実施の形態では1900℃より高い温度T2まで加熱して、密度の高いバルクセラミック材料を得る。
(a)YPG−1ガラスを溶融し;
(b)ステップ(a)で溶融した前記YPG−1ガラスをボールミル粉砕し、325Mのスクリーンを通じてふるいにかけ;
(c)前記ボールミル粉砕したYPG−1ガラス粉末をY2O3粉末と合わせて、タービュラブレンダー(turbula blender)内で所望の重量比で混合し、所望の配合物を形成し; 続いて100Mのスクリーンを通じてふるいにかけ;
(d)前記配合物を、水、エチルセルロースおよび他の押出助剤とともに混合し、スパゲッティ状に押出成形し;
(e)前記スパゲッティ状の押出成形物を1580℃まで焼成し、この温度で8時間維持して、所望のセラミック材料を形成し;
(f)前記焼成したスパゲッティ状の押出成形物を10〜15μmまでボールミル粉砕し、次いで、325Mのスクリーンを通じてふるいにかけ;
(g)前記ボールミル粉砕した粉末を等方プレス用の型(isostatic mold)に充填し、押圧して成形し、1750℃まで焼成して焼結する。
Claims (10)
- 基本的にY2O3(P2O5)xからなる化学組成を有する実質的に結晶性の物質を製造する方法であって[xは、前記結晶性物質の組成におけるP2O5のY2O3に対するモル比であり、0.30≦x≦1.20]、
(I)基本的にY2O3(P2O5)yからなる組成および軟化温度Tsoftを有するYP−ガラスを提供し[ここで、yは、前記YP−ガラス中のP2O5のY2O3に対するモル比であり、1.6≦y≦9.0];
(II)Y原料物質を提供し;
(III)溶融の際にxに等しいP2O5のY2O3に対するモル比を有し、前記YP−ガラスの複数の粒子および前記Y原料物質の複数の粒子を含む、混合物を得て;
(IV)ステップ(III)から得られた前記混合物をTsoftよりも高い温度T1まで加熱し、それによって第1のセラミックが得られる、
各工程を含む方法。 - ステップ(III)において、前記混合物が、0.95≦x≦1.00となるようにもたらされることを特徴とする請求項1記載の方法。
- ステップ(III)において、前記混合物が、1.00≦x≦1.05となるようにもたらされることを特徴とする請求項1記載の方法。
- 前記実質的に結晶性の物質が、実質的に均質な化学組成を有することを特徴とする請求項1〜3いずれか1項記載の方法。
- T1が少なくとも1000℃であることを特徴とする請求項1〜4いずれか1項記載の方法。
- 前記実質的に結晶性の物質が、純粋相のYPO4から基本的になることを特徴とする請求項1〜5いずれか1項記載の方法。
- ステップ(III)において、前記混合物が、前記YP−ガラス粒子に加えて、次のうちの少なくとも1つ:
(III−M−1)Y2O3粒子;
(III−M−2)基本的にY2O3(P2O5)zからなる組成式によって表わされる組成を有する第2のY原料物質の粒子[ここで、zは、YP−ガラス中のP2O5のY2O3に対するモル比であり、z<1];および
(III−M−3)ステップ(IV)において、Y2O3内に移すことができる、第3のY原料物質の粒子
を含むことを特徴とする請求項1〜6いずれか1項記載の方法。 - (V)ステップ(IV)から得られた前記第1のセラミックの複数の粒子を形成し;
(VI)前記第1のセラミックの粒子から圧縮未焼成体を成形し;および
(VII)前記圧縮未焼成体を1400℃より高い温度T2まで加熱して、密度の高いバルクセラミック材料を得る、
各工程を含む請求項1〜7いずれか1項記載の方法。 - ステップ(V)において、前記第1のセラミックの粒径分布が5μm〜30μmのメジアン粒径を有することを特徴とする請求項8記載の方法。
- 前記得られた実質的に結晶性の物質が8体積%未満の細孔率を有することを特徴とする請求項1〜9いずれか1項記載の方法。
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US30808010P | 2010-02-25 | 2010-02-25 | |
US61/308,080 | 2010-02-25 | ||
PCT/US2011/026172 WO2011106597A1 (en) | 2010-02-25 | 2011-02-25 | Making xenotime ceramics by reactive ceramming |
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TW201731802A (zh) * | 2015-10-13 | 2017-09-16 | 康寧公司 | 稀土磷酸鹽陶瓷製品及其製造方法 |
CN110621617B (zh) * | 2017-05-12 | 2023-08-01 | 康宁股份有限公司 | 高温密封剂及其方法 |
CN113346055A (zh) * | 2021-05-11 | 2021-09-03 | 电子科技大学 | 复合磷酸盐包覆的锂离子电池高镍正极材料及其制备方法 |
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US9021A (en) * | 1852-06-15 | Preparing cotton yarn for the manufacture of duck and other coarse | ||
JPH01126391A (ja) * | 1987-11-11 | 1989-05-18 | Nichia Chem Ind Ltd | 螢光体 |
US5094677A (en) | 1991-03-04 | 1992-03-10 | Corning Incorporated | Preparation of pollucite ceramics |
US6423415B1 (en) | 2000-08-31 | 2002-07-23 | Corning Incorporated | Potassium silicate frits for coating metals |
JP2004535909A (ja) | 2000-11-07 | 2004-12-02 | コーニング インコーポレイテッド | 低cteを持つポルサイトベースのセラミック |
DE10346197B4 (de) | 2003-09-30 | 2006-02-16 | Schott Ag | Glaskeramik, Verfahren zur Herstellung einer solchen und Verwendung |
CN101094816B (zh) * | 2004-12-30 | 2012-02-29 | 康宁股份有限公司 | 耐火材料 |
DE102005026269A1 (de) * | 2005-06-08 | 2006-12-14 | Ivoclar Vivadent Ag | Dentalglaskeramiken |
JP5157003B2 (ja) * | 2006-04-18 | 2013-03-06 | 学校法人近畿大学 | ユーロピウム付活リン酸イットリウムナノ粒子およびユーロピウム付活バナジウム酸イットリウムナノ粒子の製造方法 |
KR101451997B1 (ko) * | 2006-06-05 | 2014-10-21 | 코닝 인코포레이티드 | 제노타임 결정 구조를 갖는 단일상 이트륨 포스페이트 및 이의 제조방법 |
US8796168B2 (en) * | 2008-02-27 | 2014-08-05 | Corning Incorporated | Modified synthetic xenotime material, article comprising same and method for making the articles |
JP2009215257A (ja) * | 2008-03-12 | 2009-09-24 | Ube Ind Ltd | 放射線治療用粒子及びその製造方法 |
EP2632873B1 (en) * | 2010-10-29 | 2017-07-12 | Corning Incorporated | Dry process for making a large xenotime ceramic block |
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EP2539300A1 (en) | 2013-01-02 |
TWI527784B (zh) | 2016-04-01 |
CN102781875A (zh) | 2012-11-14 |
KR20130036008A (ko) | 2013-04-09 |
US8850851B2 (en) | 2014-10-07 |
WO2011106597A1 (en) | 2011-09-01 |
CN102781875B (zh) | 2014-08-06 |
US20120324954A1 (en) | 2012-12-27 |
KR101664527B1 (ko) | 2016-10-11 |
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