JP2010508223A - 多孔質物品を高密度化する方法 - Google Patents
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Abstract
Description
図1および2の配置において、合計で約1100±100の多孔質基材を、炉の中に提供できる。高密度化時間は、約475時間〜525時間であることができる。I−1部分のみまたはI−2部分のみが、一度に処理される。初期のI−1の高密度化の後に、別々のミリング(milling)ステップが、I−1の高密度化ステップ後の基材の気孔を’’再び開く””のに必要である。
a.標準のCVI装填において、約1100±100の基材。
b.全ての装填は、約50%のI−1部分および約50%のI−2部分である。
c.サイクル時間は、通常の従来のサイクルに比較して、約12%減少できた。
d.I−2部分のために、(底部で)トレイ1、(上部で)2および7(図7を参照のこと)、ならびにI−1部分のために、トレイ3、4、5、および6(図9を参照のこと)を使用する。
e.特に、I−2部分(すなわち、トレイ1および7)のための上部および底部の区画のより低い温度を利用する。
f.全てのI−1装填の設定において大きな密度勾配を最小化する。1.35g/cc〜1.55g/ccのかさ密度を有するI−1部分が、得られる。
a.標準のCVI装填において、約1100(±100)の基材。
b.装填は、50%のI−1部分および50%のI−2部分からなる。
c.サイクル時間は、約24%減少できた。
d.I−1部分のためのトレイ2〜6中で側部のスタック(図9を参照のこと)を、そしてI−2部分で残りの部分(図11を参照のこと)を使用する。図12および14を参照のこと。
e.水平平面中で、特にトレイ2〜6中に装填されたI−1プレフォームの周辺でより良好な温度分布を提供する。中央のI−2スタックは、この設定において受動的な熱要素として使用される。
a.標準のCVI装填において、約1100(±100)の基材。
b.装填は、50%のI−1部分および50%のI−2部分からなる。
c.それぞれのトレイ上の個々のスタックは、全てI−1部分か、または全てI−2部分かのいずれかを含む。I−1部分のスタックおよびI−2部分のスタックは、トレイの外周の周りに交互の様式で並べられ、一方、中央(例えば、3つの)スタックは、全てI−1部分(図17を参照のこと)または全てI−2部分(図15を参照のこと)のいずれかである。トレイはまた、交互に積み重なっている。例えば、図15による配置トレイ1、3、5、および7として使用でき、一方、図17による配置は、トレイ2、4、および6として使用できる。
d.28%のサイクル時間の減少が可能である。
e.水平のおよび垂直方向の両方において改善された温度均一性を提供し、望ましい密度を達成する大量の部分を生じる。I−2スタックは、この設定中で受動的な熱要素として使用される。((I−1部分に対して)図16および(I−2部分に対して)図18を参照のこと。)
a.標準のCVI装填において、約1100(±100)の基材。
b.装填は、合計で35%のI−1部分および65%のI−2部分からなる。
c.トレイ1および7は、積み重なったI−2部分のみを有する。トレイ2、3、4、5および6は、全般的に、図19で具体的に説明したように、I−1とI−2部分との混合体を有する。特に、I−1部分100およびI−2部分102は、同じスタックにおいて、相互の上に積み重ねられる。好ましくは、I−1およびI−2部分は、ブロック、スペーサー、またはシムを使用して、相互からわずかに間隔を開けて保持される。シム104の非限定の例が、米国特許第7060134号明細書中に開示されている。
d.30%のサイクル時間の減少が可能である。
e.水平(すなわち、横)の温度均一性を改善する。I−2部分は、この設定において、受動的な熱要素として役立つ。
f.密度勾配は、CVI装填において、大幅に制御された。図20および21を参照のこと。
実験#1:トレイ1において、全てI−1プレフォームで装填
底部の区画制御:1050℃±10℃
ガス予熱なし
例#2:トレイ1をすべてI−1のプレフォームで装填
底部の区画制御:1050℃±10℃
ガス予熱温度:550℃〜750℃
例#3:トレイ1の側部をI−1プレフォーム1で、中央のトレイ1をI−2のブランクで装填、
底部の区画制御:1050℃±10℃
ガス予熱温度:550℃〜750℃
例#4:トレイ1をI−2のブランクで装填
底部の区画制御:1050℃±10℃
ガス予熱温度:550℃〜750℃
本発明は、幾つかの望ましい効果を生じた。
従来技術では、主に縦方向および側部方向の両方で観察された、より大きい熱勾配により、炉の装填において、より高い高密度化勾配が観察された。本発明では、従来のCVI炉内の熱勾配を最小化する幾つかの新規な装填の設定が開示される。
Claims (10)
- CVI炉において、化学気相浸透(’’CVI’’)を使用して、多孔質基材を高密度化する方法、該CVI炉は、前駆体ガス予熱区画および該多孔質基材が高密度化される反応チャンバーを含み、該CVI炉は、該前駆体ガス予熱区画と該反応チャンバーとを分離する底部壁を含み、該底部壁は、該多孔質基材のスタックが置かれた複数の位置に対応して、該底部壁を通って形成された複数の開口を有しており、
該高密度化する方法は、
該反応チャンバー中に多孔質基材の少なくとも第1の複数のスタックを並べること、
該反応チャンバーの外周に配置された多孔質基材のスタックは、高密度化されていな
い多孔質基材、部分的に高密度化された多孔質基材、または高密度化されていない多
孔質基材と、部分的に高密度化された多孔質基材との組み合わせであり、そして部分
的に高密度化された基材の1つまたは2つ以上のスタックは、多孔質基材の該第1の
複数のスタック中の、中央の位置に配置される、そして、
化学気相浸透法を使用して、少なくとも該第1の複数のスタックの多孔質基材を高密度化すること、
を含んで成る。 - 該高密度化されていない多孔質基材が、0.35g/cc〜0.60g/ccのかさ密度範囲を有する、請求項1に記載の方法。
- 該部分的に高密度化された多孔質基材が、1.25g/cc〜1.77g/ccのかさ密度範囲を有する、請求項1または請求項2に記載の方法。
- 該多孔質基材の第1の複数のスタックの中の、該中央の位置に配置された部分的に高密度化された基材の該1つまたは2つ以上のスタックが、約1600kg〜約8000kgの全質量を有する、請求項1〜3のいずれか一項に記載の方法。
- スペーサーまたはシムを使用して、所与のスタック中に離間した隣接した多孔質基材を含む、請求項1〜4のいずれか一項に記載の方法。
- 金網メッシュ材料で作られた単一のシムを使用して、所与のスタック中に離間した隣接した多孔質基材を含む、請求項5に記載の方法。
- 該単一のシムが、約1mm〜約6mmの実効厚みを有する、請求項6に記載の方法。
- 複数の装填トレイのそれぞれ1つの上に、多孔質基材の複数のスタックを並べること、そしてそれらの上に並べられた複数の多孔質基材を有する該複数の装填トレイを、該反応チャンバー中に配置すること、を含む請求項1〜7のいずれか一項に記載の方法。
- 該多孔質基材のスタックの少なくともいくつかが、交互の積み重なった高密度化されていない基材および部分的に高密度化された基材を含む、請求項1に記載の方法。
- 該部分的に高密度化された多孔質基材が、それらの厚みを減少させるように、予め機械加工されている、請求項1〜8のいずれか一項に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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US86337706P | 2006-10-29 | 2006-10-29 | |
US60/863,377 | 2006-10-29 | ||
PCT/EP2007/061429 WO2008052923A2 (en) | 2006-10-29 | 2007-10-24 | Method of densifying porous articles |
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JP2010508223A true JP2010508223A (ja) | 2010-03-18 |
JP5205554B2 JP5205554B2 (ja) | 2013-06-05 |
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JP (1) | JP5205554B2 (ja) |
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US10443124B1 (en) * | 2010-09-09 | 2019-10-15 | Goodrich Corporation | Process and apparatus for making composite structures |
FR3018526B1 (fr) * | 2014-03-14 | 2021-06-11 | Herakles | Installation de densification cvi comprenant une zone de prechauffage a forte capacite |
US10407769B2 (en) | 2016-03-18 | 2019-09-10 | Goodrich Corporation | Method and apparatus for decreasing the radial temperature gradient in CVI/CVD furnaces |
US10131985B2 (en) * | 2016-03-21 | 2018-11-20 | Goodrich Corporation | System and method for enhancing a diffusion limited CVI/CVD process |
JP7089594B2 (ja) * | 2018-02-05 | 2022-06-22 | キンタス・テクノロジーズ・エービー | 加圧装置及び当該装置内の物品を冷却する方法 |
CN112979335B (zh) * | 2021-02-08 | 2022-07-01 | 哈尔滨化兴软控科技有限公司 | 氮化铝多孔隙原料的制备方法 |
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US3991248A (en) * | 1972-03-28 | 1976-11-09 | Ducommun Incorporated | Fiber reinforced composite product |
FR2711645B1 (fr) * | 1993-10-27 | 1996-01-26 | Europ Propulsion | Procédé d'infiltration chimique en phase vapeur d'un matériau au sein d'un substrat fibreux avec établissement d'un gradient de température dans celui-ci. |
RU2173354C2 (ru) * | 1994-11-16 | 2001-09-10 | З Би.эФ. Гудрич Кампэни | Способ и устройство инфильтрации газовой фазы химического вещества и химического осаждения из газовой фазы (варианты), изделие, получаемое этим способом, устройство для подачи первого газа-реагента в печь для инфильтрации и осаждения из газовой фазы и фрикционный диск |
DE69526259T2 (de) | 1994-11-16 | 2002-11-07 | Goodrich Co B F | Vorrichtung zur Druckfeld CVD/CVI, Verfahren und Produkt |
FR2733254B1 (fr) * | 1995-04-18 | 1997-07-18 | Europ Propulsion | Procede d'infiltration chimique en phase vapeur pour la densification de substrats poreux disposes en piles annulaires |
US6083560A (en) * | 1995-11-16 | 2000-07-04 | Alliant Techsystems Inc | Process for controlled deposition profile forced flow chemical vapor infiltration |
US6953605B2 (en) * | 2001-12-26 | 2005-10-11 | Messier-Bugatti | Method for densifying porous substrates by chemical vapour infiltration with preheated gas |
FR2844510B1 (fr) * | 2002-09-12 | 2006-06-16 | Snecma Propulsion Solide | Structure fibreuse tridimensionnelle en fibres refractaires, procede pour sa realisation et application aux materiaux composites thermostructuraux |
UA84862C2 (en) * | 2003-03-03 | 2008-12-10 | Месье-Бугатти | Substrate |
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KR20090079901A (ko) | 2009-07-22 |
WO2008052923A2 (en) | 2008-05-08 |
UA93580C2 (ru) | 2011-02-25 |
IL198156A0 (en) | 2009-12-24 |
TW200835805A (en) | 2008-09-01 |
CA2666127A1 (en) | 2008-05-08 |
RU2445405C2 (ru) | 2012-03-20 |
CN101395298B (zh) | 2011-10-05 |
WO2008052923A3 (en) | 2008-08-07 |
BRPI0718635A8 (pt) | 2015-12-29 |
AU2007316209B2 (en) | 2012-03-15 |
AU2007316209A1 (en) | 2008-05-08 |
EP2106460B1 (en) | 2015-04-08 |
CN101395298A (zh) | 2009-03-25 |
EP2106460A2 (en) | 2009-10-07 |
US20090053413A1 (en) | 2009-02-26 |
RU2009118194A (ru) | 2010-12-20 |
KR101483315B1 (ko) | 2015-01-15 |
US8133532B2 (en) | 2012-03-13 |
BRPI0718635A2 (pt) | 2015-06-23 |
MX2009004529A (es) | 2009-05-13 |
JP5205554B2 (ja) | 2013-06-05 |
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