JP4833082B2 - 焼結性ナノ粉末セラミック材料およびその製造方法 - Google Patents
焼結性ナノ粉末セラミック材料およびその製造方法 Download PDFInfo
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Description
少なくとも1つの金属元素を含む少なくとも一つの金属前駆体と、Siの主原料であり、かつ前記少なくとも1つの金属前駆体の溶媒として用いられるヘキサメチルジシラザンSi 2 C 6 NH 19 を有し、前記少なくとも一つの金属前駆体の溶媒としてヘキサメチルジシラザン以外の他の溶媒を含まない液体混合物を得る工程;
エアロゾル発生器を用いて、前記液体混合物から、少なくとも一つの金属元素を含む少なくとも一つの金属前駆体、およびSiの主原料として、そして前記少なくとも一つの金属前駆体の唯一の溶媒として用いられるヘキサメチルジシラザンSi2C6NH19(HMDS)を有するエアロゾルを発生する工程;
前記エアロゾルをガス状のシランSiH4またはその同等物に添加して反応混合物を形成する工程;および
前記反応混合物をレーザー熱分解により処理する工程。
なお、以下に示す実施例によりこの発明が限定されるものではない。
R.デズ、 F.タナガル、 C.レナウド、 M.マイン、 X.アーマンド、 N.ハーリン−ボイメ、 炭窒化珪素粉末のレーザー合成、構造および熱安定性、ジャーナル オブ ジ ヨーロピアン セラミック ソサエティ、 22 (2002)、 2969−2979(R. Dez, F. Tenegal, C. Reynaud, M. Mayne, X. Armand, N. Herlin-Boime, Laser synthesis of silicon carbonitride powders, structure and thermal stability, Journal of the European Ceramic Society, 22 (2002), 2969-2979);および
M.カウチェチア、 X.アーマンド、 N.ハーリン、 M.マイン、 S.フューシル、 有機金属化合物のレーザー噴霧熱分解によって得られた、Al(およびY)添加剤を有するSi/C/Nナノ複合粉末、ジャーナル オブ マテリアルズ サイエンス、34 (1999)、 1−8(M. Cauchetier, X. Armand, N. Herlin, M. Mayne, S. Fusil, Si/C/N nanocomposite powder with Al (and Y) additives obtained by laser spray pyrolysis of organometallic compounds, Journal of Materials Science, 34 (1999), 108)
4 超音波振動子
6 高周波発電機
8、10 パイプ
11 赤外線CO2レーザー
12 ステンレス鋼反応器
13 反応混合物
14 火炎
15 ナノ粉末の粒子
Claims (15)
- 直接焼結に好適なSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末の製造方法であって、
前記E、F、およびGはSi以外の互いに異なった金属原子を示し、a、b、およびcの少なくとも一つは非ゼロであり、
少なくとも1つの金属元素を含む少なくとも一つの金属前駆体と、Siの主原料であり、かつ前記少なくとも1つの金属前駆体の溶媒として用いられるヘキサメチルジシラザンSi 2 C 6 NH 19 を有し、前記少なくとも一つの金属前駆体の溶媒としてヘキサメチルジシラザン以外の他の溶媒を含まない液体混合物を得る工程;
エアロゾル発生器を用いて、前記液体混合物から、少なくとも一つの金属元素を含む少なくとも一つの金属前駆体、およびSiの主原料として、そして前記少なくとも一つの金属前駆体の唯一の溶媒として用いられるヘキサメチルジシラザンSi2C6NH19を有するエアロゾルを発生する工程;
前記エアロゾルをガス状のシランSiH4またはその同等物に添加して反応混合物を形成する工程;および
前記反応混合物をレーザー熱分解により処理する工程
を有することを特徴とするSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末の製造方法。 - 前記金属元素がAl、Y、Mg、Yb、およびLaから選ばれることを特徴とする請求項1に記載の製造方法。
- 前記少なくとも一つの金属前駆体がイットリウムイソプロポキシドC9H21O3Yを有することを特徴とする請求項1または請求項2に記載の製造方法。
- 前記少なくとも一つの金属前駆体がアルミニウムセクブトキシド(aluminum secbutoxide)C12H21O3Alを有することを特徴とする請求項1から3のいずれか1項に記載の製造方法。
- 前記少なくとも一つの金属前駆体がアルミニウムイソプロポキシドC9H21O3Alを有することを特徴とする請求項1から4のいずれか1項に記載の製造方法。
- アンモニアNH3またはその同等物が、ガス状で、前記エアロゾルに添加されることを特徴とする請求項1〜5のいずれか1項に記載の製造方法。
- 請求項1〜6のいずれか1項に記載の製造方法を用いて、直接焼結に好適なSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末を製造し;該ナノ粉末を直接焼結することを特徴とする、複合セラミックの製造方法。
- 請求項1〜6のいずれか1項に記載の製造方法を用いて得られるSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末であって、前記E、F、およびGはSi以外の互いに異なった3つの金属原子を示し、a、b、およびcの少なくとも一つは非ゼロであり、混合前工程や焼鈍前工程を必要とせずに直に焼結することができることを特徴とし、該粉末中の各粒子は、Si、C、N、Ea、Fb、Gc、およびOの全ての元素を含有し、元素分析から計算によって決定される当量化学量論的化合物で表される化学組成における遊離炭素の含有量が2%未満、SiO2の含有量が10%未満であることを特徴とするSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末。
- 前記金属元素E、F、およびGは、Al、Y、Mg、Yb、およびLaから選択されることを特徴とする請求項8に記載のナノ粉末。
- 前記金属元素EおよびFは、それぞれアルミニウムAlおよびイットリウムYであることを特徴とする請求項9に記載のナノ粉末。
- 前記Gcの指数cがゼロであり、前記金属源として2つの金属元素EおよびFのみを含有することを特徴とする請求項8〜10のいずれか1項に記載のナノ粉末。
- 元素の化学組成から計算によって求められた当量化学量論的化合物で表される化学組成におけるAl2O3およびY2O3の合計含有量が3%以上であることを特徴とする請求項10または11に記載のナノ粉末。
- 請求項8〜12のいずれか1項に記載のSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末の、複合セラミックの製造における使用。
- 請求項8に記載のSi/C/N/Ea/Fb/Gc/O多元素ナノ粉末(前記E、F、およびGはSi以外の互いに異なる3つの金属元素を表し、a、b、およびcの少なくとも一つが非ゼロである)から得られたSi3N4/SiC型の複合セラミックであって、その実測密度がその理論的密度の少なくとも99.5%に等しいことを特徴とする複合セラミック。
- その実測密度が、その理論的密度の100%に等しいことを特徴とする請求項14に記載の複合セラミック。
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FR0400898 | 2004-01-30 | ||
FR0400898A FR2865671B1 (fr) | 2004-01-30 | 2004-01-30 | Nanopoudre ceramique apte au frittage et son procede de synthese |
PCT/FR2005/000174 WO2005082808A1 (fr) | 2004-01-30 | 2005-01-27 | Nanopoudre ceramique apte au frittage et son procede de synthese |
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EP (1) | EP1708975A1 (ja) |
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CN1312302C (zh) * | 2005-09-30 | 2007-04-25 | 北京工业大学 | 晶态与非晶态结构及尺寸可调控的纳米纯钐的制备方法 |
US7658899B2 (en) * | 2006-01-27 | 2010-02-09 | Konica Minolta Medical & Graphic, Inc. | Production method of nanoparticle |
FR2933972B1 (fr) | 2008-07-18 | 2011-06-10 | Commissariat Energie Atomique | Procede de preparation d'une piece en carbure de silicium ne necessitant pas l'usage d'ajouts de frittage |
FR2945035B1 (fr) * | 2009-04-29 | 2011-07-01 | Commissariat Energie Atomique | Procede d'elaboration d'une poudre comprenant du carbone, du silicium et du bore, le silicium se presentant sous forme de carbure de silicium et le bore se presentant sous forme de carbure de bore et/ou de bore seul |
US8142861B2 (en) | 2009-05-11 | 2012-03-27 | King Fahd University Of Petroleum & Minerals | Method of carbo-nitriding alumina surfaces |
US8147926B2 (en) | 2009-05-18 | 2012-04-03 | King Fahd University Of Petroleum & Minerals | Laser gas assisted nitriding of alumina surfaces |
CN102840394B (zh) * | 2012-08-15 | 2015-05-13 | 郑州华泰节能陶瓷有限公司 | 重结晶碳化硅复合弯管及其制备方法 |
DE102012219989B4 (de) * | 2012-10-31 | 2016-09-29 | WZR ceramic solutions GmbH | Druckverfahren zur Herstellung eines Grünkörpers, Grünkörper und keramischer Formkörper |
US10167366B2 (en) * | 2013-03-15 | 2019-01-01 | Melior Innovations, Inc. | Polysilocarb materials, methods and uses |
CN103551573B (zh) * | 2013-10-22 | 2015-06-17 | 中国科学院金属研究所 | 可避免原始颗粒边界相析出的高温合金粉末热等静压工艺 |
CN105240649A (zh) * | 2015-10-13 | 2016-01-13 | 苏州上春仪监测程控设备制造有限公司 | 一种抗撞耐磨板及其加工方法 |
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JPH06345519A (ja) * | 1993-03-23 | 1994-12-20 | Elf Atochem Sa | 金属及び/又は非金属の窒化物及び/又は炭化物製セラ ミックス用粉末のフラッシュ熱分解による製造方法及び 該粉末 |
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EP0662463B1 (en) * | 1993-12-17 | 2001-06-13 | Honda Giken Kogyo Kabushiki Kaisha | Yttrium-containing composite powder, composite sintered body, and method of manufacturing same |
WO2002057197A1 (fr) * | 2001-01-22 | 2002-07-25 | Sumitomo Electric Industries, Ltd. | Corps fritté composite à base de nitrure de silicium électro-conducteur et procédé d'élaboration |
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US7077991B2 (en) * | 2004-02-06 | 2006-07-18 | The Regents Of The University Of California | Nanocomposites of silicon nitride, silicon carbide, and boron nitride |
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JPS6051539A (ja) * | 1983-08-31 | 1985-03-23 | Toyota Central Res & Dev Lab Inc | レ−ザ−ビ−ムを用いる微粒子の製造方法およびその装置 |
JPH06345519A (ja) * | 1993-03-23 | 1994-12-20 | Elf Atochem Sa | 金属及び/又は非金属の窒化物及び/又は炭化物製セラ ミックス用粉末のフラッシュ熱分解による製造方法及び 該粉末 |
JPH08253309A (ja) * | 1995-02-04 | 1996-10-01 | Degussa Ag | 高熱分解法で製造された二酸化珪素をベースとする顆粒、その製法及びそれを含有する触媒担体 |
JP2000264621A (ja) * | 1999-03-19 | 2000-09-26 | Tokuyama Corp | 疎水性シリカの製造方法 |
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FR2865671B1 (fr) | 2007-03-16 |
US7687421B2 (en) | 2010-03-30 |
EP1708975A1 (fr) | 2006-10-11 |
WO2005082808A1 (fr) | 2005-09-09 |
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