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1. 发明授权

US08536080B2 Boron carbide ceramic fibers 失效
标题翻译：碳化硼陶瓷纤维
公开(公告)号：US08536080B2
公开(公告)日：2013-09-17
申请号：US12486832
申请日：2009-06-18
申请人： Farhad Mohammadi , Richard B. Cass
发明人： Farhad Mohammadi , Richard B. Cass
IPC分类号： C04B35/52 , D01C5/00 , G21C21/00 , D01F6/18 , D01F9/12 , C01G56/00 , C01G43/00 , C01B31/36 , C01B31/34 , C01B31/04
CPC分类号： D01F2/08 , C04B35/563 , C04B35/62277 , C04B35/62281 , C04B35/6267 , C04B35/62675 , C04B35/6365 , C04B35/6455 , C04B2235/3206 , C04B2235/3217 , C04B2235/3409 , C04B2235/3813 , C04B2235/3821 , C04B2235/3826 , C04B2235/401 , C04B2235/421 , C04B2235/422 , C04B2235/5256 , C04B2235/5264 , C04B2235/5445 , C04B2235/652 , C04B2235/668 , C04B2235/72 , C04B2235/77 , C04B2235/80
摘要： A metal carbide ceramic fiber having improved mechanical properties and characteristics and improved processes and chemical routes for manufacturing metal carbide ceramic fiber. Metal carbide ceramic fibers may be formed via reaction bonding of a metal-based material (e.g. boron) with the inherent carbon of a carrier medium. One embodiment includes a method of making a metal carbide ceramic fiber using VSSP to produce high yield boron carbide fiber. Embodiments of the improved method allow high volume production of high density boron carbide fiber. The chemical routes may include a direct production of boron carbide fiber from boron carbide powder (B4C) and precursor (e.g. rayon fiber) having a carbon component to form a B4C/rayon fiber that may be processed at high temperature to form boron carbide fiber, and that may be subsequently undergo a hot isostatic pressing to improve fiber purity. Another route may include a carbothermal method comprising combining boron powder (B) with a precursor (e.g., rayon fiber) having a carbon component to form a B/rayon fiber, carbonizing and a chemical reaction of boron (B) and carbon (C) to form boron carbide fiber. Another carbothermal method may comprise combining boron oxide powder (B2O3) with a precursor (e.g., rayon fiber) having a carbon component to form a B2O3/rayon fiber, carbonizing and a chemical reaction of boron oxide (B2O3) and carbon (C) to form boron carbide (B4C) fiber.
摘要翻译：一种金属碳化物陶瓷纤维，其具有改进的机械性能和特性，以及用于制造金属碳化物陶瓷纤维的改进方法和化学路线。金属碳化物陶瓷纤维可以通过金属基材料（例如硼）与载体介质的固有碳的反应结合而形成。一个实施方案包括使用VSSP制备金属碳化物陶瓷纤维以产生高产率碳化硼纤维的方法。改进方法的实施例允许高容量生产高密度碳化硼纤维。化学路线可以包括从碳化硼粉末（B4C）直接生产碳化硼纤维和具有碳组分的前体（例如人造纤维），以形成可在高温下加工以形成碳化硼纤维的B4C /人造丝纤维，然后可以进行热等静压，以提高纤维纯度。另一种途径可以包括碳热法，其包括将硼粉末（B）与具有碳组分的前体（例如人造丝纤维）组合以形成B /人造丝纤维，碳化和硼（B）和碳（C）的化学反应，以形成碳化硼纤维。另一种碳热法可以包括将氧化硼粉末（B 2 O 3）与具有碳成分的前体（例如人造纤维）组合以形成B 2 O 3 /人造丝纤维，碳化和氧化硼（B 2 O 3）和碳（C）的化学反应与形成碳化硼（B4C）纤维。

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