Microstructures and properties of the nitrided layers fabricated on titanium substrate by direct cur

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The nitrided layers mainly containing TiN dendrites were fabricated by direct current nitrogen arc melting method.The test results show that the layers are harder and more resistant to wear than the titanium substrate.Arc traveling speeds and arc currents have an effect on both the microstructures and the properties of the layers.Decreasing the arc traveling speed or increasing the arc current can obviously enhance the hardness and the wear resistance of the nitrided layers. The nitrided layers mainly containing TiN dendrites were fabricated by direct current nitrogen arc melting method. The test results show that the layers are harder and more resistant to wear than the titanium substrate. ARC traveling speeds and arc currents have an effect on both the microstructures and the properties of the layers. Increasing the arc traveling speed or increasing the arc current can obviously enhance the hardness and the wear resistance of the nitrided layers.
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