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Boron Nitride Nanotube Reinforced Titanium Composite With Controlled Interfacial Reactions By Spark Plasma Sintering, Jenniffer Bustillos
Boron Nitride Nanotube Reinforced Titanium Composite With Controlled Interfacial Reactions By Spark Plasma Sintering, Jenniffer Bustillos
FIU Electronic Theses and Dissertations
In this study, Boron Nitride Nanotube (BNNT) reinforced Titanium matrix composites are synthesized by Spark Plasma Sintering. Two main challenges directly affecting the mechanical performance of BNNT-metal matrix composites are addressed:(i) Homogenous dispersion of high surface energy BNNTs, and (ii) Controlling interfacial reactions at the metal/nanotube interface. High-energy ultrasonication induced dispersion resulted in the functionalization of BNNTs by -OH radicals proving its suitability over surfactant assisted dispersion routes. The sintering of Ti (99% relative density) was achieved at 50% less processing temperature than those used in conventional sintering to minimize interfacial reactions when reinforced with BNNTs. The reduction of temperatures …