Diamond-like coating piston ring and preparation method thereof
A diamond coating and piston ring technology, applied in the field of piston rings, can solve the problems affecting the wear resistance of diamond-like carbon, high temperature stability, high hardness of diamond-like coating, and difficult to guarantee the bonding force, etc. Anti-peeling ability, increase practicality, reduce the effect of internal stress
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[0036] The preferred embodiments of a diamond-like carbon coated piston ring and preparation method of the present invention will be described in detail below with reference to the accompanying drawings.
[0037] Such as figure 1 with 2 As shown, a diamond-like coating piston ring includes a piston ring base 1, the outer circumference of the piston ring base 1 is provided with a titanium nitride transition layer 2 with increasing nitrogen content, a piston ring base 1 and a titanium nitride transition layer A titanium layer is arranged between 2 and the thickness of the titanium layer is less than or equal to 10% of the thickness of the titanium nitride transition layer;
[0038] Preferably, a titanium layer is provided on the piston ring. The titanium layer and the piston ring base 1 have a very similar thermal deformation. While the titanium nitride is formed, the nitrogen content is gradually increased, thereby changing the hardness of the titanium nitride, and at the same time ...
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