Coated reinforcing fibers, composites and methods

专利名称：Coated reinforcing fibers, composites and

methods

发明人：Mohamed E. Labib,Bawa Singh申请号：US07/925501申请日：19920805公开号：US026000A公开日：19950620

摘要：Fiber-reinforced titanium alloy and intermetallic matrix composites havingimproved stability and tensile strength properties at elevated temperatures. The basereinforced fibers are pre-coated with a tailorable tri-layer coating, such as Ti--TiN--Ti.Preferably the TiN layer is graded so as to have metal-rich outer surfaces, such astitanium- rich TiN, providing excellent bonding affinity for the base titanium layer, bondedto the surface of the fibers, such as silicon carbide, and for the outer titanium layer,bonded to the titanium aluminum matrix, and a compound core, such as stoichiometricTiN, providing a stable interfacial barrier against chemical reactions, whereby the tensilestrength and resistance to cracking of the composite is preserved even at elevatedtemperatures of 900° C. or higher.

申请人：ALLIEDSIGNAL INC.

代理机构：Perman & Green

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