JP2019501849A - 炭素繊維強化炭化物‐セラミック複合部材 - Google Patents
炭素繊維強化炭化物‐セラミック複合部材 Download PDFInfo
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- JP2019501849A JP2019501849A JP2018522023A JP2018522023A JP2019501849A JP 2019501849 A JP2019501849 A JP 2019501849A JP 2018522023 A JP2018522023 A JP 2018522023A JP 2018522023 A JP2018522023 A JP 2018522023A JP 2019501849 A JP2019501849 A JP 2019501849A
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Abstract
Description
a)ポリマーまたはポリマー前駆体で含浸された少なくとも2つの一方向性炭素繊維不織布を上下に直接積層する段階と、
b)上下に積層された前記炭素繊維不織布を、高圧および高温の下で圧密化して炭素繊維強化ポリマーを得る段階と、
c)前記炭素繊維強化ポリマーを600℃から1000℃の間の温度で炭化して炭素繊維強化炭素を得る段階と、
d)前記炭素繊維強化炭素を少なくとも1800℃の温度で黒鉛化する段階と、
e)段階d)において黒鉛化された前記炭素繊維強化ポリマーをケイ素化する段階であって、表面が液体ケイ素と接触している黒鉛化された炭素繊維強化炭素の表面上で、少なくとも1つの前記炭素繊維不織布の少なくともいくつかの炭素繊維の端部が前記表面に向かうように、前記炭素がケイ素化される、ケイ素化する段階と、
を含む、セラミック部材を製造する方法に関する。
C1)炭素繊維強化炭素に液体炭素供給物を含浸させる段階と、
C2)含浸後の段階c)による炭素繊維強化炭素を炭化する段階と、
を含む後処理が少なくとも1回施される。
本発明は、特定の実施例を利用して以下で説明される。
それぞれの方向が0°/90°で交互になるように20層のUDプリプレグを上下に配置した。この場合、UDプリプレグは、硬化されていないフェノール樹脂で含浸された平行な炭素繊維から構成される。本発明によると、プリプレグは、炭素繊維の繊維方向を横切る方向に補助的な糸または他の部材を全く含まない。このプリプレグの1つの層は、略0.25mmの高さまたは厚さ、および略1.20mの幅を有する。フラットプレスモールドにおいて1barの下で140℃で8時間、積層体を硬化する。溶出した樹脂を得られたCFRPプレートの表面から除去し、前記プレートを切断して10cm×10cmの寸法を有するより小さな試験片を形成する。
‐ピッチで含浸する
‐再度炭化する(900℃)
Claims (15)
- 炭化ケイ素およびケイ素元素を含むセラミックマトリクスに埋込まれた少なくとも2層の一方向性炭素繊維不織布からなる少なくとも1つのスタックを備えるセラミック部材であって、
前記少なくとも1つのスタック内の全ての隣接する層が互いに直接隣接しており、前記少なくとも1つのスタックが前記層の平面に垂直な方向において少なくとも1.5mmの厚さを有し、前記セラミックマトリクスが前記部材全体に実質的に浸透していることを特徴とする、セラミック部材。 - 前記マトリクスが前記部材全体にわたって均質な組成を有することを特徴とする、請求項1に記載のセラミック部材。
- 前記少なくとも1つのスタック内の連続する層が、それらの繊維の方向の点において互いに異なることを特徴とする、請求項1に記載のセラミック部材。
- 前記部材が3.5%以下の開放気孔率を有することを特徴とする、請求項1に記載のセラミック部材。
- 前記部材が50〜65%の範囲の繊維体積比を有することを特徴とする、請求項1に記載のセラミック部材。
- 前記部材が、互いに一体的に接合された少なくとも2つの部材を備え、前記少なくとも2つの部材の各々もまた請求項1に記載のセラミック部材として形成されていることを特徴とする、請求項1に記載のセラミック部材。
- 前記部材が2.0g/cm3以下の密度を有することを特徴とする、請求項1に記載のセラミック部材。
- セラミック部材を製造する方法であって、
a)ポリマーまたはポリマー前駆体で含浸された少なくとも2つの一方向性炭素繊維不織布を上下に直接配置する段階と、
b)上下に配置された前記炭素繊維不織布を高圧および高温の下で圧密化して、炭素繊維強化ポリマーを得る段階と、
c)前記炭素繊維強化ポリマーを600℃から1000°Cの間の温度で炭化して、炭素繊維強化炭素を得る段階と、
d)前記炭素繊維強化炭素を少なくとも1800℃の温度で黒鉛化する段階と、
e)段階d)において黒鉛化された前記炭素繊維強化炭素をケイ素化する段階であって、表面が液体ケイ素と接触している黒鉛化された炭素繊維強化炭素の表面上で、少なくとも1つの前記炭素繊維不織布の少なくともいくつかの炭素繊維の端部が前記表面に向かうように、前記炭素がケイ素化される、ケイ素化する段階と、
を含む、方法。 - 段階c)による前記炭素繊維強化炭素に、
C1)前記炭素繊維強化炭素に液体炭素供給物を含浸させる段階と、
C2)段階c)によって含浸された前記炭素繊維強化炭素を炭化する段階と、
を含む後処理を少なくとも1回実施することを特徴とする、請求項8に記載の方法。 - 前記ポリマーまたはポリマー前駆体が、フェノール樹脂と、フラン樹脂と、シアン酸エステルとからなる群から選択された合成樹脂を含むことを特徴とする、請求項8に記載の方法。
- ポリマーまたはポリマー前駆体で含浸された前記一方向性炭素繊維不織布が、フェノール樹脂プリプレグと、フラン樹脂プリプレグと、シアン酸エステルプリプレグとからなる群から選択されたプリプレグであることを特徴とする、請求項8に記載の方法。
- 上下に配置された前記炭素繊維不織布を圧密化する段階が合成樹脂を硬化する段階を含む、請求項8に記載の方法。
- 前記セラミック部材の所望の形状にしたがって黒鉛化炭素繊維強化炭素を機械加工することによって、成形体を生成することを特徴とする、請求項8に記載の方法。
- 連結された成形体の互いに接するそれぞれの境界面で、対応する成形体の前記炭素繊維の少なくとも一部の端部が前記境界面に向けられるように、少なくとも2つの成形体が連動連結されることを特徴とする、請求項13に記載の方法。
- 請求項1に記載のセラミック部材の装入ラックとしての使用。
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DE102015221111.8A DE102015221111A1 (de) | 2015-10-28 | 2015-10-28 | Carbonfaserverstärktes carbidkeramisches Verbundbauteil |
PCT/EP2016/075827 WO2017072187A1 (de) | 2015-10-28 | 2016-10-26 | Carbonfaserverstärktes carbidkeramisches verbundbauteil |
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US11746064B2 (en) * | 2019-06-06 | 2023-09-05 | General Electric Company | Systems and methods for infiltrating porous ceramic matrix composite (CMC) preforms |
JP2022182569A (ja) * | 2021-05-28 | 2022-12-08 | 三菱重工航空エンジン株式会社 | セラミックス基複合材の成形方法及びセラミックス基複合材 |
CN115235294B (zh) * | 2022-07-20 | 2024-02-23 | 苏州第一元素纳米技术有限公司 | 一种止裂防弹陶瓷板及其制备方法与应用 |
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