Corrosion and Werar Properties of TiC-Ni-Mo Composites Produced by Direct Consolidation during Self-propagating High Temperature Reaction

다국어 초록 (Multilingual Abstract)

TiC-Ni-Mo composites were prepared by one-step direct consolidation during self-propagating high temperature synthesis reaction and their corrosion and wear properties were studied to apply to structural materials. The composites reached 99.8 ％of theoretical density after the direct consolidation. Corrosion potentials and rates of the composites in 50％ NaOH solution were -982.7 mVshe and 3.6×-10 A㎝-² for TiC-50% Ni and -1074.8 mVshe and 8.12×10-6A㎝-² for TiC-46.5％Ni-3.5％ Mo, respectively. Wear resistance determined by abrasive wear increased with moiybdenum addition. Electron probe microanalysis revealed that δ -phase was formed around titanium carbide fur the TiC-Ni-Mo composites. Transmission electron microscopy revealed that dislocation density around the carbide in the composites was high. The improved wear resistance was associated with increases of the interfacial bonding strength due to the formation ofδ -phase and the high dislocation density around carbide due to thermal expansion coefficient between carbide and matrix.

목차 (Table of Contents)

• 1. INTRODUCTION
• 2. EXPERIMENTAL METHOD
• 3. RESULTS AND DISCUSSION
• 4. CONCLUSIONS
• ACKNOWLEDGEMENTS
• REFERENCES