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42results about How to "High atomic ionization rate" patented technology

Method and device for depositing sand erosion-resisting nano composite film on blade of helicopter

The invention discloses a method and device for repairing a TiN/DLC/TiN nano composite film which is excellent in bonding force and high in sand erosion resistance on the surface of a blade of an engine. The method for preparing the TiN/DLC/TiN nano composite film comprises the steps that a metal 'pinning layer' which can improve the bonding force of a film base is injected into the surface of the blade through a metal vapor vacuum arc (MEVVA) ion source method; deposition is conducted on the metal 'pinning layer' through a magnetic filtered cathodic vacuum arc (FCVA) deposition method, so that a first metal/metal oxide film transition layer used for releasing the internal stress is obtained; deposition is conducted on the first transition layer through the magnetic FCVA deposition method, so that a second soft DLC layer is obtained; deposition is conducted on the second soft layer, so that a third superhard TiN film is obtained; and the second layer and the third layer are prepared by repeatedly conducting the process till the overall thickness of the TiN/DLC/TiN nano composite film is 10-30 micrometers. By the adoption of the method and device, the TiN/DLC/TiN nano composite film is deposited on the blade of the engine, so that the blade of the engine is well protected, and the situation that the blade of the engine is damaged due to sand erosion is prevented.
Owner:BEIJING NORMAL UNIVERSITY

Method and device for prolonging service life of diamond grinding wheel rod of polished optical glass based on ion beam technology

The invention discloses a method for prolonging the service life of a diamond grinding wheel rod of polished optical glass based on the ion beam technology. According to the method, an ultra-thick and ultra-hard (AlTi)1-xNx/AlTiCN/TiAl/(ZrAl)1-xNx composite film which is high in friction coefficient and good in toughness is deposited on the surface of silicon carbide through an ion implantation technique and a magnetic filtration deposition technique. A method for preparing the (AlTi)1-xNx/AlTiCN/TiAl/(ZrAl)1-xNx composite film comprises the steps that a metal cathode filtered cathodic vacuum arc (FCVA) system is adopted, and a workpiece is cleaned on the surface of the grinding wheel rod through high-energy large-beam metal ion beams; then a metal vacuum vapor ion source (MEVVA) method is adopted, and a metal "pinning layer" capable of improving the film-base combination force is injected into the surface of the workpiece; sine or cosine modulated deposition is conducted on the gas inlet amount on the metal"pinning layer" through a magnetic filtration filtered cathodic vacuum arc (FCVA) method, and the ultra-hard thick (AlTi)1-xNx/AlTiCN/TiAl/(ZrAl)1-xNx composite film which is good in toughness is obtained; and the modulation period is repeated till the total thickness of the (AlTi)1-xNx/AlTiCN/TiAl/(ZrAl)1-xNx composite film reaches 10-30 microns. By the adoption of the method, the (AlTi)1-xNx/AlTiCN/TiAl/(ZrAl)1-xNx composite film deposited on the workpiece is good in toughness and quite high in microhardness, and the service life of the grinding wheel rod can be prolonged by 2-5 times.
Owner:BEIJING NORMAL UNIVERSITY

Preparation method and equipment of patterned electrostatic chuck

The invention discloses a preparation method and equipment of a patterned electrostatic chuck. The preparation method comprises the following steps that an ultra-large size (greater than 300 mm) ceramic sheet (AlN or Al2O3) is selected as a substrate, a patterned organic adhesive mask is printed on the substrate, and a high resistivity, high hardness, wear resistance and ion erosion resistance DLCfilm layer is deposited by utilizing an ion beam technology; a deposition method comprises the following steps that a high-energy metal vacuum vapor ion source (MEVVA ) is adopted, a metal element isinjected into the substrate to form a graded pseudo diffusion layer, and then a 90-degree ultra-wide magnetic filtration metal cathode vacuum arc (FCVA) technology is adopted, and a metal transitionlayer is deposited; a single T-shaped magnetic filtration cathode vacuum arc (FCVA) is adopted on the metal transition layer, and a DLC film layer with high sp2 content is obtained through the deposition; and a double-T-shaped magnetic filtration cathode vacuum arc (FCVA) is utilized on the DLC film layer with the high-sp2-content, and a super-hard DLC film layer is obtained through the deposition; and the resistance of the film layer can reach 10-50 megohm, and the hardness can reach 80 Gpa or above. According to the method and the equipment, the electrostatic chuck is enabled to have excellent wear resistance, and the service life is prolonged.
Owner:BEIJING NORMAL UNIVERSITY

Cr/CrNx heat insulating film for top surface of aluminium alloy piston and preparation method of Cr/CrNx heat insulating film

The invention relates to a Cr/CrNx heat insulating film for the top surface of an aluminium alloy piston and a preparation method of the Cr/CrNx heat insulating film. The Cr/CrNx heat insulating filmis formed by a pure metal Cr layer attached to the top surface of the aluminium alloy piston and a CrNx layer coating the pure metal Cr layer uniformly. The preparation method of the Cr/CrNx heat insulating film comprises the following steps: firstly, the cleaned and dried aluminium alloy piston is placed in an FCVA (filtered cathodic vacuum arc) deposition system, a magnetic filtered Ti power arcis switched on, and the pure metal Cr layer is deposited with a pure metal Cr target as a cathode; the aluminium alloy piston with the pure metal Cr layer on the top surface is obtained; then the pure metal Cr target is taken as the cathode, nitrogen is taken as working gas, the nitrogen introducing amount is regulated, and the CrNx layer is generated on the pure metal Cr layer of the aluminium alloy piston with the pure metal Cr layer on the top surface. The strength, the wear resistance and the heat insulation performance of the obtained product are all better than those of the existing products, requirements of modern engines for high power and low emission can be met, and large-scale industrial application is facilitated.
Owner:XIANGTAN UNIV

A method and equipment for improving the service life of diamond grinding wheel rods for polishing optical glass based on ion beam technology

The invention discloses a method for prolonging the service life of a diamond grinding wheel rod of polished optical glass based on the ion beam technology. According to the method, an ultra-thick and ultra-hard (AlTi)1-xNx / AlTiCN / TiAl / (ZrAl)1-xNx composite film which is high in friction coefficient and good in toughness is deposited on the surface of silicon carbide through an ion implantation technique and a magnetic filtration deposition technique. A method for preparing the (AlTi)1-xNx / AlTiCN / TiAl / (ZrAl)1-xNx composite film comprises the steps that a metal cathode filtered cathodic vacuum arc (FCVA) system is adopted, and a workpiece is cleaned on the surface of the grinding wheel rod through high-energy large-beam metal ion beams; then a metal vacuum vapor ion source (MEVVA) method is adopted, and a metal "pinning layer" capable of improving the film-base combination force is injected into the surface of the workpiece; sine or cosine modulated deposition is conducted on the gas inlet amount on the metal"pinning layer" through a magnetic filtration filtered cathodic vacuum arc (FCVA) method, and the ultra-hard thick (AlTi)1-xNx / AlTiCN / TiAl / (ZrAl)1-xNx composite film which is good in toughness is obtained; and the modulation period is repeated till the total thickness of the (AlTi)1-xNx / AlTiCN / TiAl / (ZrAl)1-xNx composite film reaches 10-30 microns. By the adoption of the method, the (AlTi)1-xNx / AlTiCN / TiAl / (ZrAl)1-xNx composite film deposited on the workpiece is good in toughness and quite high in microhardness, and the service life of the grinding wheel rod can be prolonged by 2-5 times.
Owner:BEIJING NORMAL UNIVERSITY

A kind of cr/crnx heat-insulating film used on the top surface of aluminum alloy piston and its preparation method

The invention relates to a Cr / CrNx heat insulating film for the top surface of an aluminium alloy piston and a preparation method of the Cr / CrNx heat insulating film. The Cr / CrNx heat insulating filmis formed by a pure metal Cr layer attached to the top surface of the aluminium alloy piston and a CrNx layer coating the pure metal Cr layer uniformly. The preparation method of the Cr / CrNx heat insulating film comprises the following steps: firstly, the cleaned and dried aluminium alloy piston is placed in an FCVA (filtered cathodic vacuum arc) deposition system, a magnetic filtered Ti power arcis switched on, and the pure metal Cr layer is deposited with a pure metal Cr target as a cathode; the aluminium alloy piston with the pure metal Cr layer on the top surface is obtained; then the pure metal Cr target is taken as the cathode, nitrogen is taken as working gas, the nitrogen introducing amount is regulated, and the CrNx layer is generated on the pure metal Cr layer of the aluminium alloy piston with the pure metal Cr layer on the top surface. The strength, the wear resistance and the heat insulation performance of the obtained product are all better than those of the existing products, requirements of modern engines for high power and low emission can be met, and large-scale industrial application is facilitated.
Owner:XIANGTAN UNIV
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