JP7304812B2 - 元素添加剤を含む繊維および製造方法 - Google Patents
元素添加剤を含む繊維および製造方法 Download PDFInfo
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- JP7304812B2 JP7304812B2 JP2019528682A JP2019528682A JP7304812B2 JP 7304812 B2 JP7304812 B2 JP 7304812B2 JP 2019528682 A JP2019528682 A JP 2019528682A JP 2019528682 A JP2019528682 A JP 2019528682A JP 7304812 B2 JP7304812 B2 JP 7304812B2
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- fiber
- fibers
- carbide
- diboride
- hafnium
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Description
本出願は、「元素添加剤を有する繊維および製造方法」という名称の、2016年11月29日に出願された米国仮特許出願第62/427,362号の利益を主張し、これは参照によりその全体が本明細書に組み込まれる。
本発明は、一般に強化材料用の繊維の分野に関し、より具体的には元素添加剤を有する繊維の分野に関する。
ここに記載されているように、上述の粒子成長プロセスは、粒界経路を通る原子拡散によって進行することが多く、したがって粒界における特大原子の添加(すなわち1つ以上の元素添加剤)は、原子拡散に対するエネルギー障壁を示し、形成された繊維内での高温での粒子成長を遅らせることにより耐クリープ性を高める。したがって、多成分繊維に元素添加剤を加えることによって繊維の耐クリープ性を向上させる機会が存在する。
本発明の態様ならびにその特定の特徴、利点および詳細は、添付の図面に示された非限定的な例を参照して以下により十分に説明される。周知のシステム、装置、製造および処理技術などの説明は、本発明を不必要に詳細に曖昧にしないように省略される。しかしながら、詳細な説明および特定の実施例は、本発明の態様を示す一方で、例示としてのみ与えられており、限定としてではないことを理解されたい。根底にある発明の概念の精神および/または範囲内での様々な置換、修正、追加、および/または配置が、この開示から当業者には明らかであろう。さらに、本発明の多数の態様および特徴がここに開示されており、矛盾しない限り、開示された各態様または特徴は、例えばここに記載されているような、元素添加剤を含む多組成繊維を提供することを容易にし、および製造する方法のために、特定の用途に望まれるような任意の他の開示の態様または特徴と組み合わせることができる。
・フィラメントを成長させるための材料に依存しない能力。
・Pegnaら(国際公開第2015/200257A1号(特許文献1))の図10に示すような、フィラメントの長さに沿って直径を変化させる能力。
・Maxwellらによって実証されたような、長さに沿って組成を変化させる物質にとらわれない能力。
・上記で参照したPegnaらのPCT公報で示されたナノポーラスおよび他のスポットコーティングによって示されるような、フィラメントの特定の部分を所望の材料、形態および厚さによってコーティングする、材料にとらわれない能力。
Claims (3)
- 多組成繊維が、一次繊維材料と元素添加材料とを含み、
前記一次繊維材料が、炭化ケイ素、炭化ホウ素、窒化ケイ素、炭化ジルコニウム、二ホウ化ハフニウム、炭化ハフニウム、炭化タンタル、炭化ニオブ、二ホウ化タンタル、二ホウ化ジルコニウム、二ホウ化タングステン、窒化ハフニウム、窒化タンタル、窒化ジルコニウム、およびそれらの組み合わせからなる群から選択され、
前記元素添加材料が、ハフニウム、タンタル、ニオブ、イットリウム、ランタン、セリウム、ジルコニウム、モリブデン、タングステン、およびそれらの組み合わせからなる群から選択され、
前記元素添加材料の元素原子が、前記一次繊維材料の粒子の結晶構造内に収まるには大きすぎるため、前記粒子の境界に存在し、かつ、前記一次繊維材料の隣接する結晶ドメイン間の粒界に堆積されて、前記粒界を通る原子拡散に対するエネルギー障壁を示し、前記一次繊維材料内での800℃超での粒子成長を遅らせることにより耐クリープ性を高める、多組成繊維。 - 前記一次繊維材料が、耐火グレードの無機一次繊維材料である、請求項1に記載の多組成繊維。
- 前記多組成繊維が、実質的に不均一な直径を有する、請求項1に記載の多組成繊維。
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US201662427362P | 2016-11-29 | 2016-11-29 | |
US62/427,362 | 2016-11-29 | ||
PCT/US2017/063607 WO2018102352A1 (en) | 2016-11-29 | 2017-11-29 | Fiber with elemental additive(s) and method of making |
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