JP6719210B2 - ハイブリッドサンドイッチ型のセラミックマトリクス複合材料 - Google Patents
ハイブリッドサンドイッチ型のセラミックマトリクス複合材料 Download PDFInfo
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Description
加えて、本方法は更に、積層スタックを第1の温度で硬化させることと、ハイブリッドサンドイッチ型のCMCを提供するために、第2の温度において積層スタックを焼結することとを含みうる。
セラミックマトリクス24内のフィラメント22を含む第1の表面板14と、
セラミックマトリクス24内のフィラメント22を含む第2の表面板16と、
第1の表面板と第2の表面板との間で両方の表面板に接着されたコア12とを含み、ハイブリッドサンドイッチ型のCMCは温度勾配に曝されるように構成されており、この温度勾配では第1の表面板が第2の表面板よりも高い温度環境に曝され、第1の表面板と第2の表面板は、ほぼ一致する熱膨張率を有し、第1の表面板は第2の表面板よりも高い圧縮強度を有する。
セラミックマトリクス24内のフィラメント22を含む第1の表面板14と、
セラミックマトリクス24内のフィラメント22を含む第2の表面板16と、
第1の表面板と第2の表面板との間で両方の表面板に接着されたコア12とを含み、第1の表面板と第2の表面板は、ほぼ一致する熱膨張率を有しているが、 フィラメントの直径、フィラメントの化学的性質、直交異方性の度合い、及びフィラメントとセラミックマトリクスとの間の界面強度の内の少なくとも一つにおいて異なっている。
フィラメント22のプリプレグ層をセラミックマトリクス24に含む第1の表面板14をツール上に積層する54ことと、
第1の表面板上にコア12を積層する56ことと、
積層スタックを提供するために、フィラメント22のプリプレグ層をセラミックマトリクス24に含む第2の表面板16をコア上に積層する58ことであって、第1の表面板と第2の表面板は、フィラメントの直径、フィラメントの化学的性質、直交異方性の度合い、及びフィラメントとセラミックマトリクスとの間の界面強度の内の少なくとも一つにおいて異なる、積層する58ことと、
積層スタックを第1の温度で硬化させる60ことと、
ハイブリッドサンドイッチ型のCMCを提供するために、第2の温度において積層スタックを焼結する62ことと
を含む。
Claims (8)
- ハイブリッドサンドイッチ型のセラミックマトリクス複合材料(CMC)(10)であって、
セラミックマトリクス(24)内のフィラメント(22)を含む第1の表面板(14)と、
セラミックマトリクス(24)内のフィラメント(22)を含む第2の表面板(16)と、
前記第1の表面板(14)と前記第2の表面板(16)との間で両方の表面板に接着されたコア(12)と
を含み、
前記ハイブリッドサンドイッチ型のCMC(10)は温度勾配に曝されるように構成されており、前記温度勾配では前記第1の表面板(14)が前記第2の表面板(16)よりも高い温度環境に曝され、前記第1の表面板(14)と前記第2の表面板(16)は、互いの0.9×10 −6 ミクロン/メートル/°C(0.5×10 −6 ミクロン/メートル/°F)内にある、ほぼ一致した熱膨張率を有し、前記第1の表面板(14)は前記第2の表面板(16)よりも高い圧縮強度を有し、前記第2の表面板(16)は、前記第1の表面板(14)よりも高い引張強度を有し、前記第1の表面板(14)の前記フィラメント(22)の直径は、前記第2の表面板(16)の前記フィラメント(22)の直径よりも少なくとも2倍大きい、ハイブリッドサンドイッチ型のセラミックマトリクス複合材料(CMC)(10)。 - 前記第1の表面板(14)が、前記第1の表面板(14)の引張強度よりも1.5倍高い圧縮強度を有し、前記第2の表面板(16)が、前記第2の表面板(16)の圧縮強度よりも1.5倍高い引張強度を有する、請求項1に記載のハイブリッドサンドイッチ型のCMC(10)。
- 前記第1の表面板(14)の前記フィラメント(22)と前記第2の表面板(16)の前記フィラメント(22)は同じ化学成分を有し、前記第1の表面板(14)の前記セラミックマトリクス(24)と前記第2の表面板(16)の前記セラミックマトリクスは同じ化学成分を有し、前記第1の表面板(14)の前記フィラメント(22)の体積率は、前記第2の表面板(16)の前記フィラメント(22)の体積率と等しい、請求項1または2に記載のハイブリッドサンドイッチ型のCMC(10)。
- 前記ハイブリッドサンドイッチ型のCMC(10)は円筒形である、請求項1から3のいずれか一項に記載のハイブリッドサンドイッチ型のCMC(10)。
- 前記第1の表面板(14)は、前記第2の表面板(16)よりも直交異方性が高い、請求項1から4のいずれか一項に記載のハイブリッドサンドイッチ型のCMC(10)。
- 前記第1の表面板(14)の前記フィラメント(22)と前記セラミックマトリクス(24)との間の界面強度は、前記第2の表面板(16)の前記フィラメント(22)と前記セラミックマトリクス(24)との間の界面強度よりも強い、請求項1から5のいずれか一項に記載のハイブリッドサンドイッチ型のCMC(10)。
- 前記ハイブリッドサンドイッチ型のCMC(10)は、航空機排気システム(34)の部品の一部であり、前記第1の表面板(14)は前記航空機排気システム(34)の排気ガスの流路(42)に面する、請求項1から6のいずれか一項に記載のハイブリッドサンドイッチ型のCMC(10)。
- 請求項1に記載のハイブリッドサンドイッチ型のセラミックマトリクス複合材料(CMC)(10)を製造する方法であって、
セラミックマトリクス(24)内のフィラメント(22)のプリプレグ層を含む第1の表面板(14)をツール上に積層する(54)ことと、
前記第1の表面板(14)上にコア(12)を積層する(56)ことと、
積層スタックを提供するために、セラミックマトリクス(24)内のフィラメント(22)のプリプレグ層を含む第2の表面板(16)を前記コア(12)上に積層する(58)ことと、
前記積層スタックを第1の温度で硬化させる(60)ことと、
前記ハイブリッドサンドイッチ型のCMC(10)を提供するために、第2の温度において前記積層スタックを焼結する(62)ことと
を含む方法。
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