Method for depositing protection film on the ceramics valve core surface

A technology of ceramic valve core and protective film, applied in ion implantation plating, metal material coating process, coating, etc., can solve the problems of large valve core wear, easy peeling, poor bonding force, etc., and achieve improved wear-resistant sealing Performance and service life, good binding force of film base, and effect of improving binding force

Active Publication Date: 2011-08-10
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for depositing a protective film on the surface of a ceramic valve core. By using the method, a layer of diamond-like carbon with high hardness, low friction coefficient, good wear resistance and corrosion resistance and chemical inertness can be deposited on the surface of the ceramic valve core. The protective film of carbon film coating solves the defects of large wear and short life of the traditional faucet ceramic valve core, and also solves the problem of poor bonding force between the film and the ceramic substrate, high residual stress, and easy Problems with peeling and rough surfaces

Method used

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  • Method for depositing protection film on the ceramics valve core surface
  • Method for depositing protection film on the ceramics valve core surface

Examples

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Embodiment 1

[0023] The invention provides a method for depositing a protective film on the surface of a ceramic valve core. The coating machine used includes a vacuum chamber, a magnetron sputtering source, a linear ion source and a workpiece bracket with both revolution and rotation. The workpiece bracket is installed Inside the vacuum chamber, it includes the following steps: see figure 1 shown

[0024] (1) Ultrasonic cleaning of the ceramic valve core in acetone solution, then ultrasonic cleaning in alcohol solution, after drying, hanging and fixing on the workpiece bracket, so that the magnetron sputtering source and linear ion source surround the ceramic Around the spool;

[0025] (2) Install a simple chromium target on the magnetron sputtering source, and evacuate the vacuum chamber to 1.6×10 -5 After Torr, argon gas is introduced, the linear ion source is turned on, the negative bias voltage of the ceramic valve core is adjusted to 200V, and the ceramic valve core is subjected to...

Embodiment 2

[0031] The difference from the first embodiment is that in step (2), the magnetron sputtering source is installed with a simple titanium target.

Embodiment 3

[0033] The difference from the first embodiment is that in step (2), the magnetron sputtering source is installed with a simple tungsten target.

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Abstract

The invention relates to a method for depositing protection film on the ceramics valve core surface. the employed film plating machine comprises a vacuum chamber, magnetron sputtering sources, linear ion sources and a workpiece carriage capable of revolving and rotating; and the workpiece carriage is mounted in the vacuum chamber. The invention is characterized in comprising the following steps: (1) performing ultrasonic cleaning to the ceramics valve core in alcohol and acetone solution, drying, fixing on the workpiece carriage by suspension arranging the magnetron sputtering sources and linear ion sources to surround the ceramics valve core; (2) mounting metal targets made of transition metal on the magnetron sputtering sources, and performing ion bombardment to the ceramics valve core;(3) turning on the power supply of the magnetron sputtering sources to deposit the first film on the ceramics valve core; (4) starting the linear ion sources to deposit the second film on the ceramicsvalve core; (5) depositing the third layer on the ceramics valve core. The invention deposits three layers on the ceramics valve core, can substantially improve the abrasion resistant sealing performance and service life of the ceramics valve core.

Description

technical field [0001] The invention relates to a method for depositing a protective film on the surface of a ceramic valve core. Background technique [0002] With the increasingly severe water environment, water conservation has attracted people's attention. Generally speaking, whether the quality of the faucet is good or not, the spool is the key. At present, the commonly used valve core materials in the market include rubber, stainless steel, metal, ceramics, etc. Among them, ceramic valve cores have good sealing performance, high heat resistance, low price, less pollution to water quality, light and flexible switches, and long life. Therefore, it has become the first choice valve core material for middle and high-end faucet products in the market. Compared with other spool faucets, the water-saving faucets used with ceramic spools can generally be opened and closed hundreds of thousands of times without leaking a drop of water, and the water saving can be as high as 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/06
Inventor 汪爱英孙丽丽代伟吴国松
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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