JP2014525386A - 湿潤環境において安定な超耐熱材料及びその製造方法 - Google Patents
湿潤環境において安定な超耐熱材料及びその製造方法 Download PDFInfo
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Abstract
【選択図】なし
Description
C/C材料に対して熱膨張係数が大きすぎるため、超耐熱性層でのクラックの出現及びC/C材料と前記層との界面に沿った密着性の喪失につながり、このようにして生成したクラックはひいては酸素及び水(いずれかの使用環境に存在する場合)を拡散するための経路となり、それによって、C/C基材が酸化されるに至り、その機械的物性が弱くなったり、失われることにさえなること;及び
2300℃よりも高い温度における低い耐酸化性。
前記組成物を成形して、当該組成物を高密度化する工程、
を備えることを特徴とする。
炭素相及び炭化ケイ素相を有するマトリックスによって高密度化された炭素繊維強化材でできた材料に相当するC−C/SiC;
炭化ケイ素のマトリックスによって高密度化された炭素繊維強化材でできた材料に相当するC−SiC;及び
炭化ケイ素のマトリックスによって高密度化された炭化ケイ素繊維強化材でできた材料に相当するSiC/SiC。
炭素及び窒素。
50容量%のHfB2、25容量%のHfC、及び25容量%のTaB2を含む本発明の材料;
ZrB2−ZiC(20容量%)をベースとする組成物よりも優れた耐腐食性の、参考のZrB2−SiC−Y2O3組成物を含む超耐熱材料;及び
熱構造C/SiC複合材料、
の間で、SiCのアクティブ酸化温度(約2000℃)で腐食試験中に測定された収縮速度を示す。
20 保護層
20a 上部
20b 下層
30 基材
31 SiC層
32 ZrC層
40 保護層
Claims (13)
- 酸化媒体中での高温に耐える耐熱材料であって、前記材料が少なくともホウ化ハフニウム及びホウ化タンタルを含み、前記材料においてハフニウム及びタンタルが化合物の形態でのみ存在することを特徴とする耐熱材料。
- 前記材料がホウ素を含み、タンタルに対するハフニウムの原子比率が、厳密に1を超え10未満(1<nHf/nTa<10)であり、タンタルに対するホウ素の原子比率は、5.4以上である(nB/nTa≧5.4)ことを特徴とする請求項1に記載の材料。
- 50容量%のHfB2、25容量%のHfC及び25容量%のTaB2を含むことを特徴とする請求項1又は2に記載の材料。
- 請求項1〜3のいずれか1項に記載の耐熱材料で構成されることを特徴とする酸化媒体中での高温に耐える耐熱性部品。
- 特定の材料でできている基材を備える部品であって、前記部品は酸化媒体中での高温における保護を提供するための保護コーティングを備え、前記保護コーティングが請求項1〜4のいずれか1項に記載の耐熱材料によって構成されることを特徴とする部品。
- 前記基材が炭化ケイ素をベースとするモノリシックセラミック材料又は炭素をベースとするモノリシック材料、又は炭化ケイ素を含むセラミックマトリックス複合材料でできていることを特徴とする請求項5に記載の部品。
- 前記基材がC/C複合材料でできていることを特徴とする請求項5に記載の部品。
- さらに、該部品の前記基材のC/C複合材料の近くに位置する炭化ケイ素の層及び前記炭化ケイ素層と前記保護コーティングとの間に配置された炭化ジルコニウム又は炭化ハフニウムの層を備えることを特徴とする請求項7に記載の部品。
- 酸化媒体中での高温に耐える耐熱材料から部品を製造する方法であって、前記方法は、少なくともホウ化ハフニウム及びホウ化タンタルを含む組成物を製造する工程、
前記組成物においてハフニウム及びタンタルは化合物の形態でのみ存在する; 及び
前記組成物を成形して、当該組成物を高密度化する工程、
を備えることを特徴とする。 - 特定の材料でできている基材を備える部品上に、酸化媒体中での高温に耐える保護層を製造する方法であって、前記方法は、
少なくともホウ化ハフニウム及びホウ化タンタルを含む組成物を部品上に塗布する工程、前記組成物においてハフニウム及びタンタルが化合物の形態でのみ存在する;及び
前記組成物を高密度化する工程、
を備える。 - 前記基材が、炭化ケイ素をベースとするモノリシックセラミック材料、又は炭素をベースとするモノリシック材料、又は炭化ケイ素を含むセラミックマトリックス複合材料でできていることを特徴とする請求項10に記載の方法。
- 前記基材が、C/C複合材料でできていることを特徴とする請求項10に記載の方法。
- さらに、前記部品の前記基材のC/C複合材料の近くに位置する炭化ケイ素の層を形成し、前記炭化ケイ素の層と前記保護層との間に配置された炭化ジルコニウム又は炭化ハフニウムの層を形成する工程を備えること特徴とする請求項12に記載の方法。
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PCT/FR2012/051851 WO2013030484A1 (fr) | 2011-08-31 | 2012-08-06 | Materiau ultra-refractaire stable en environnement humide et son procede de fabrication |
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JP2016014142A (ja) * | 2011-08-19 | 2016-01-28 | ワッカー ケミー アクチエンゲゼルシャフトWacker Chemie AG | オルガニルオキシシラン末端ポリマーに基づく架橋性材料 |
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US10954167B1 (en) * | 2010-10-08 | 2021-03-23 | Advanced Ceramic Fibers, Llc | Methods for producing metal carbide materials |
CN104529456B (zh) * | 2014-12-03 | 2017-03-22 | 武汉理工大学 | 一种B4C‑HfB2高温共晶自生复合陶瓷的制备方法 |
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KR101942604B1 (ko) | 2019-01-25 |
EP2751049A1 (fr) | 2014-07-09 |
WO2013030484A1 (fr) | 2013-03-07 |
US20150175487A1 (en) | 2015-06-25 |
US9340460B2 (en) | 2016-05-17 |
KR20140089335A (ko) | 2014-07-14 |
BR112014003863A2 (pt) | 2018-08-14 |
CN103764594A (zh) | 2014-04-30 |
JP6002769B2 (ja) | 2016-10-05 |
FR2979341B1 (fr) | 2020-01-31 |
EP2751049B1 (fr) | 2020-04-29 |
FR2979341A1 (fr) | 2013-03-01 |
CN103764594B (zh) | 2015-12-23 |
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