JP2006524624A - 多孔質基材をカーボンで緻密化するための化学気相浸透プロセスの制御又はモデル化 - Google Patents
多孔質基材をカーボンで緻密化するための化学気相浸透プロセスの制御又はモデル化 Download PDFInfo
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- Automation & Control Theory (AREA)
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- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
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Abstract
Description
・反応ガスの流量、
・ガスの1つ又はそれ以上の成分の特定の流量、特に上記の例においてドーピングガスの流量、
・基材が加熱される温度、
・炉内に存在する圧力、並びに
・炉を通過する反応ガスの通過時間。
τ=V/Q
〔ここで、Vはガスが通過し得る炉の内容積であり、そしてQはガスが入れられる流量である〕
により通常定義されるからである、ということが気づかれるべきである。容積Vは、炉中に装填される基材中の接近可能な細孔の容積を含む。通過時間τは炉が装填される程度に依存し、また他の事柄が等しいままで基材を緻密化するプロセスが続くにつれてそれはある程度変動する。
VR=V+VS
〔ここで、VSは、接近可能な細孔を有さないところの基材の部分により相当される容積である〕
により上記に定義された容積Vに関係づけられる。
基材を用いて種々の緻密化段階にて且つ各場合において種々の装填物でもって、化学気相浸透プロセスを実行した。
処理操作は、通過時間が約2sに上げられたこと以外は、試験1についてと同じであった。
処理操作は、通過時間が0.75に減じられそして温度は1050℃であったこと以外は、試験1についてと同じであった。
処理操作は、C3H8が別のドーパントすなわちブタンC4H10により置き換えられ、CH4/C4H10の容積比が同様に0.9/0.1であったこと以外は、試験1についてと同じであった。
処理操作は、通過時間が2sに上げられたこと以外は、試験4についてと同じであった。
処理操作は試験3についてと同じであったが、しかしC3H8は別のドーパントすなわちエタンC2H6により置き換えられ、CH4/C2H6の容積比は同様に0.9/0.1であった。
処理操作は、約950℃の温度及び約1.9kPaの圧力にて操作すること以外は、試験1においてのとおりであった。
処理操作は、約1kPaの圧力にて操作すること以外は、試験7においてと同じであった。
・PyC微細構造に応じるように、温度は900℃から1100℃の範囲にあり、
・PyC微細構造に応じるように並びに炉内に非常に低い圧力を確立し且つ維持するという技術的拘束を限定するように、圧力は0.1kPaから10kPaの範囲にあり、
・特にガスが熟成する(不所望沈積物に通じる)のを避けるために、通過時間は0.5sから5sの範囲にあり、そして
・メタン及び1種又はそれ以上のドーパントガス特にプロパン、ブタン又はエタンを含有する反応ガスにおいて、ドーパント容積比は0%から70%の範囲又は0%から100%の範囲にあり、しかして反応ガスが緻密化の始めにドーパントによってのみで構成されることが可能である。
CH4/C3H8混合物を含有する反応ガスを用いた。炉内の温度を約1000℃に等しい値に、圧力を約1.3kPaに等しい値にそして通過時間を1±0.30sに調節することにより(通過時間の変動は流量の変動と直接的に関連させられる)、PyC・CVIプロセスを遂行した。
10%のドーパント容積分率を有するCH4/C4H10混合物を含む反応ガスを用いた。炉中の圧力を約1.0kPaの値にそして通過時間を約1sの値に調節することにより、PyC・CVIプロセスを遂行した。
Claims (12)
- 少なくとも1つの多孔質基材を化学気相浸透により熱分解カーボンで緻密化するプロセスを制御又はモデル化する方法において、該プロセスが、緻密化されるべき1つ又はそれ以上の多孔質基材を含む装填物を炉中に置き;該基材を加熱し;少なくとも1種のカーボン前駆体炭化水素を含有する反応ガスを該炉中に入れ;該加熱基材の細孔中において熱分解カーボンの沈積物を形成するように該加熱基材の細孔内に該ガスが拡散するのを可能にするように該炉中の圧力を調節し;そして流出ガスを該炉の出口に連結された引抜きパイプを介して該炉から引き抜くことを含む方法であって、アレン、プロピン及びベンゼンから選択された少なくとも1種の化合物の該流出ガス中の含有率を測定し;そして該測定含有率の関数として、該炉中に入れられる該反応ガスの流量、該炉中に入れられる該ガスの少なくとも1つの成分の流量、該炉を通過する該ガスの通過時間、該基材が加熱される温度及び該炉内に存在する圧力から選択された少なくとも1つのパラメーターを調節することにより該プロセスを制御することを特徴とする方法。
- 測定含有率を実質的に一定である値に維持するように、少なくとも1つのパラメーターを調節する、ことを特徴とする請求項1に記載の方法。
- 含有率を引抜きパイプと平行なダクト中で測定する、ことを特徴とする請求項1又は2に記載の方法。
- 含有率をガスクロマトグラフィーにより測定する、ことを特徴とする請求項1〜3のいずれか一項に記載の方法。
- 反応ガスの流量又は反応ガスの成分の流量を測定アレン及び/又はプロピン含有率の関数として調節することにより方法を制御する、ことを特徴とする請求項1〜4のいずれか一項に記載の方法。
- 基材が加熱される温度を測定ベンゼン含有率の関数として調節することにより方法を制御する、ことを特徴とする請求項1〜4のいずれか一項に記載の方法。
- 反応ガスが、アルカン、アルキン及びアルケンから選択された少なくとも1つの成分を含む、ことを特徴とする請求項1〜6のいずれか一項に記載の方法。
- 反応ガスが、プロパン、ブタン及びエタンから選択され且つメタン中に希釈される前駆体を含む、ことを特徴とする請求項1〜7のいずれか一項に記載の方法。
- 選択されたパラメーターを、前もって決定された範囲の値内で調節する、ことを特徴とする請求項1〜8のいずれか一項に記載の方法。
- 選択されたパラメーターを調節することによって測定含有率の変動を制御することが不可能になることにより、緻密化プロセスの終わりを検出する、ことを特徴とする請求項9に記載の方法。
- 調節されたパラメーター又は各パラメーターの変動を、後で同じタイプの装填物を緻密化するプロセス中において再現可能であるモデルを構成するように蓄積する、ことを特徴とする請求項1〜10のいずれか一項に記載の方法。
- 緻密化プロセスの継続時間も蓄積する、ことを特徴とする請求項10又は11に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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FR0305194A FR2854168B1 (fr) | 2003-04-28 | 2003-04-28 | Commande ou modelisation de procede d'infiltration chimique en phase vapeur pour la densification de substrats poreux par du carbone |
PCT/FR2004/001009 WO2004097065A2 (fr) | 2003-04-28 | 2004-04-27 | Commande ou modelisation de procede d'infiltration chimique en phase vapeur pour la densification de substrats poreux par du carbone. |
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JP2006524624A true JP2006524624A (ja) | 2006-11-02 |
JP4546459B2 JP4546459B2 (ja) | 2010-09-15 |
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EP (1) | EP1620577B1 (ja) |
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KR (1) | KR101179769B1 (ja) |
CN (1) | CN1777692B (ja) |
AT (1) | ATE521729T1 (ja) |
BR (1) | BRPI0409674A (ja) |
CA (1) | CA2523927C (ja) |
FR (1) | FR2854168B1 (ja) |
IL (1) | IL171439A (ja) |
MX (1) | MXPA05011570A (ja) |
RU (1) | RU2347009C2 (ja) |
TW (1) | TWI352132B (ja) |
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US7691443B2 (en) * | 2005-05-31 | 2010-04-06 | Goodrich Corporation | Non-pressure gradient single cycle CVI/CVD apparatus and method |
US8057855B1 (en) * | 2005-05-31 | 2011-11-15 | Goodrich Corporation | Non-pressure gradient single cycle CVI/CVD apparatus and method |
US20070184179A1 (en) * | 2006-02-09 | 2007-08-09 | Akshay Waghray | Methods and apparatus to monitor a process of depositing a constituent of a multi-constituent gas during production of a composite brake disc |
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Also Published As
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FR2854168B1 (fr) | 2007-02-09 |
BRPI0409674A (pt) | 2006-04-18 |
WO2004097065A2 (fr) | 2004-11-11 |
UA89025C2 (ru) | 2009-12-25 |
US7727591B2 (en) | 2010-06-01 |
US20060263525A1 (en) | 2006-11-23 |
CA2523927A1 (en) | 2004-11-11 |
CN1777692A (zh) | 2006-05-24 |
KR20060010764A (ko) | 2006-02-02 |
RU2005131994A (ru) | 2006-06-10 |
KR101179769B1 (ko) | 2012-09-04 |
WO2004097065A3 (fr) | 2004-12-16 |
CN1777692B (zh) | 2012-09-05 |
JP4546459B2 (ja) | 2010-09-15 |
ATE521729T1 (de) | 2011-09-15 |
CA2523927C (en) | 2012-09-18 |
MXPA05011570A (es) | 2005-12-15 |
TWI352132B (en) | 2011-11-11 |
FR2854168A1 (fr) | 2004-10-29 |
EP1620577A2 (fr) | 2006-02-01 |
TW200506089A (en) | 2005-02-16 |
RU2347009C2 (ru) | 2009-02-20 |
EP1620577B1 (fr) | 2011-08-24 |
IL171439A (en) | 2009-07-20 |
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