3 results about "Cathodic arc deposition" patented technology

This invention relates to a method for surface modification of key friction pairs in internal combustion engines based on laser cladding and diamond-like carbon (DLC) composite coatings, belonging to the field of surface strengthening and remanufacturing technology for key internal combustion engine components. Two functional transition layers are sequentially prepared on the substrate of the key friction pair using laser cladding technology: first, a Ni60-Cu alloy layer is clad as a toughness buffer layer to alleviate thermal stress and improve the bonding strength with the substrate; then, a WC particle-reinforced Ni-based alloy layer is clad as a reinforcing support layer to provide a high-hardness substrate; after polishing the cladding layers, a DLC coating is prepared on the polished surface using cathodic arc deposition. This invention solves the problems of weak adhesion and easy peeling of DLC coatings on gray cast iron through a gradient material design and sequential process of toughness buffering, reinforcing support, and ultra-hard friction reduction. The prepared friction pair possesses high interfacial bonding strength, excellent fatigue resistance, and friction-reducing and wear-resistant properties, extending the service life of the friction pair under harsh operating conditions.

A cathodic arc coating system includes alternating layers of at least one of titanium vanadium nitride (TiVN) and titanium silicon vanadium nitride (TiSiVN) disposed on a substrate; and alternating layers of titanium vanadium chromium nitride (TiVCrN) and titanium silicon vanadium nitride (TiSiVCrN) disposed on a substrate. A cathodic arc process includes a sub-hertz variable bias forming the alternating layers of alternating layers of at least one of titanium vanadium nitride (TiVN) and titanium silicon vanadium nitride (TiSiVN) disposed on a substrate; and alternating layers of titanium vanadium chromium nitride (TiVCrN) and titanium silicon vanadium nitride (TiSiVCrN) disposed on a substrate.

The cathodic arc coating system includes at least one alternating layer of titanium vanadium nitride (TiVN) and titanium silicon vanadium nitride (TiSiVN) disposed on a substrate, and at least one alternating layer of titanium vanadium chromium nitride (TiVCrN) and titanium silicon vanadium nitride (TiSiVCrN) disposed on the substrate. The cathodic arc process includes a sub-hertz variable bias that forms at least one alternating layer of titanium vanadium nitride (TiVN) and titanium silicon vanadium nitride (TiSiVN) disposed on the substrate, and at least one alternating layer of titanium vanadium chromium nitride (TiVCrN) and titanium silicon vanadium nitride (TiSiVCrN) disposed on the substrate.