Chromium-Chromium Nitride Composite Coating and Its Application in Nanocomposite Tools
A chromium nitride layer and nano-composite technology, which is applied in the application of nano-composite tools and the field of chromium-chromium nitride composite coatings, can solve the problems of high thickness of alternating composite layers, low manufacturing process precision, and affecting product appearance quality, etc. , to achieve the effects of stable chemical and mechanical properties of oxides, improved wear resistance and high hardness
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Embodiment 1
[0024] The preparation method of the nano-composite tool deposited with the chromium-chromium nitride composite coating provided in this example includes the following steps: first, the tool substrate with a clean surface is placed in an argon environment, a vacuum degree of 0.01Pa, and a bias voltage of -300V Glow cleaning was carried out in the vacuum coating equipment for 35 minutes; after the glow cleaning was completed, adjust the bias voltage to -50V, turn on the Cr target, adjust the target current to 100A, and bombard the tool substrate with high-energy Cr ions for 10 minutes to activate the surface of the tool substrate for 1 ;
[0025] Then, after the activation of the surface 1 of the tool substrate is completed, a chromium layer 2 is deposited on the surface 1 of the tool substrate by the PVD method, and the tool substrate is placed in an argon environment with a vacuum degree of 0.35 Pa, a pulse bias voltage of 80V, and a duty cycle of 40%. Under the conditions, t...
Embodiment 2
[0029] The preparation method of the nano-composite cutting tool deposited with the chromium-chromium nitride composite coating provided in this embodiment comprises the following steps: first, the cutting tool substrate with a clean surface is placed in an argon environment, the vacuum degree is 1Pa, and the bias voltage is -1000V. Perform glow cleaning in the vacuum coating equipment for 5 minutes; after the glow cleaning is completed, adjust the bias voltage to -300V, turn on the Cr target, adjust the target current to 350A, and bombard the tool substrate with high-energy Cr ions for 1 minute to activate the surface of the tool substrate;
[0030] Then, after the activation of the tool substrate surface 1 is completed, the PVD method is used to deposit a chromium layer 2 on the tool substrate surface 1, and the tool substrate is placed in an argon environment, a vacuum degree of 0.45Pa, a pulse bias voltage of 150V, and a duty ratio of 60%. Under these conditions, the argon ...
Embodiment 3
[0033] The preparation method of the nano-composite tool deposited with the chromium-chromium nitride composite coating provided in this example includes the following steps: first, the tool substrate with a clean surface is placed in an argon environment, a vacuum degree of 0.2 Pa, and a bias voltage of -600V Perform glow cleaning in the vacuum coating equipment for 10 minutes; after the glow cleaning is completed, adjust the bias voltage to -100V, turn on the Cr target, adjust the target current to 200A, and bombard the tool substrate with high-energy Cr ions for 3 minutes to activate the surface of the tool substrate;
[0034] Then, after the activation of the tool substrate surface 1 is completed, the PVD method is used to deposit a chromium layer 2 on the tool substrate surface 1, and the tool substrate is placed in an argon atmosphere, with a vacuum degree of 0.4Pa, a pulse bias voltage of 100V, and a duty cycle of 50%. Under the conditions, the argon gas flow rate is 220...
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