고온자전합성법으로 제조된 다공성 TiNi 생체재료의 기공구조 및 기계적 특성
Pore Structure and Mechanical Property of Porous TiNi Biomaterial Produced by Self-Propagating High-Temperature Synthesis
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Abstract
Porous TiNi bodies were produced by Self-propagating High-temperature Synthesis (SHS) method from a powder mixture of Ti and Ni. Porosity, pore size and structure, mechanical property, and transformation temperature of TiNi product were investigated. The average porosity and pore size of produced porous TiNi body are 63% and 216 μm, respectively. XRD analysis showed that the major phase of produced TiNi body is B2 phase. Its average fracture strength and elastic modulus measured under dry condition were 22±2 MPa and 0.18±0.01 GPa, respectively. It could be strained up to 7.3%. The transformation temperatures determined by DSC showed the Ms temperature of 67℃ and Af temperature of 99℃.