Synthesis of TiC-Ni Functionally Graded Materials by Electrothermal Combustion
손인진 , 김환철 In Jin Shon , Hwan Cheol Kim
Abstract
Titanium carbide, TiC-x mole% Ni composites, and functionally-graded materials (FGMs) of TiC-x mole% Ni were synthesized by an electrothermal combustion (ETC) method. TiC-65 mole% Ni composite was not ignited by indirect tungsten coil heating, but can be synthesized by an electrothermal combustion. The velocity of the combustion wave decreased with increasing addition of Ni and increased with an increase in the applied field. Functionally-graded TiC-Ni materials were made from reactant layers with compositions of Ti + C + x mole% Ni with x ranging from zero to 65 by an electrothermal combustion. In the FGM products a nearly linear change in composition in the graded region was observed in samples with 0 ≤ x ≤ 65 with x being the mole% Ni.