6 results about "Cathodic arc deposition" patented technology

The invention discloses a production process of anti-radiation glass, and belongs to the technical field of glass. According to the production process of the anti-radiation glass, multi-line cutting, double-precision carving and double-polishing and ultrasonic cleaning treatment are performed in sequence, so that the glass substrate has excellent surface precision and cleanliness, and film deposition is facilitated. Then, a TiN layer is deposited by adopting a cathodic arc to endow the glass with infrared reflection, high-frequency electromagnetic shielding and thermal radiation resistance, and neutron shielding, chemical stability and self-cleaning performance are further enhanced through a magnetron sputtering composite material layer.

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.

This application discloses a method for manufacturing a loudspeaker diaphragm, the loudspeaker diaphragm itself, and a loudspeaker. The manufacturing method includes: molding a polymer to form a folded diaphragm substrate; placing the folded diaphragm substrate in a deposition chamber for cathodic arc deposition and thermal evaporation deposition to obtain a vapor-deposited diaphragm; selecting high-modulus carbon fiber prepreg and wet-winding it at a preset angle on a first mold to obtain a carbon fiber voice coil skeleton; bonding the vapor-deposited diaphragm to the carbon fiber voice coil skeleton with high-rigidity adhesive to obtain a diaphragm assembly; performing a frequency sweep test on the diaphragm assembly; adjusting the vibration characteristics of the diaphragm assembly based on the test results until the preset performance requirements are met to obtain a loudspeaker diaphragm assembly. This application significantly improves the performance and stability of the diaphragm assembly through a multi-step synergistic process, overcoming the shortcomings of existing technologies such as insufficient high-frequency vibration stability of the diaphragm, poor coating uniformity, and complex processes.

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.

The invention discloses a loudspeaker diaphragm manufacturing method, a loudspeaker diaphragm and a loudspeaker, and the manufacturing method comprises the steps: carrying out the mold pressing of a high-molecular polymer, forming an edge-folded structure diaphragm substrate, placing the edge-folded structure diaphragm substrate in a deposition cavity, carrying out the cathodic arc deposition, and carrying out the thermal evaporation deposition, and obtaining an evaporation diaphragm; selecting a high-modulus carbon fiber prepreg, and carrying out wet winding forming treatment on a first mold at a preset angle to obtain a carbon fiber voice coil skeleton; bonding the evaporation diaphragm and the carbon fiber voice coil skeleton through high-rigidity glue to obtain a diaphragm assembly; and performing a frequency sweep test on the diaphragm assembly, and adjusting the vibration characteristic of the diaphragm assembly according to a test result until a preset performance requirement is met, thereby obtaining the loudspeaker diaphragm assembly. The performance and the stability of the diaphragm assembly are remarkably improved through a multi-step collaborative process, and the defects that in the prior art, the diaphragm is insufficient in high-frequency vibration stability, poor in coating uniformity, complex in process and the like are overcome.