Abstract
A new nitriding process titanium furface using the self propagating high temperature synthesis has been developed. A titanium plate was embeded in or coated with the self combustion agent of Nb or Ti metal powders, and the agent was ignited in a pressurized nitrogen gas atmosphere of 2.5Mpa. The nitriding reaction propagated through the agent and the surface of titanium was rapidly nitrided by the strongly exothermic heat over 2000K. The hardness, corrosion resistance and tensile strength of the surface nitrided titanium obtained by this method were comparable or superior to those of the surface nitrided titanium obtained by the conventional gas nitriding process.
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