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Preparation method of functional gradient multi-layer nano coating on surface of steel workpiece and product comprising functional gradient multi-layer nano coating

A functionally gradient, nano-multilayer technology, applied in the coating, metal material coating process, ion implantation plating, etc., can solve the problem of high equipment investment, limited popularization and application, low ionization rate of magnetron sputtering ion plating, etc. problems, to achieve the effect of simple structure production, scientific and reasonable design, and low process cost

Active Publication Date: 2016-05-11
ZHUHAI ROSSINI WATCH IND
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  • Claims
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Problems solved by technology

However, the existing (Cr,Al,Si)N thin film preparation process still adopts a single ion coating process, which is bound to cause large particle pollution on the surface of the cathodic arc ion plating, which makes the surface roughness of the film higher and magnetron sputtering ion plating. The low ionization rate leads to technical defects such as insufficient film structure
Although, there have been researches to prepare (Cr, Al, Si) N thin films by ion plating composite process, for example, among them YoungSuHong et al. 67) Using arcionplating (AIP) combined with a DCreactive magnetronsputtering, it is more difficult to control the stoichiometric ratio of Si doping elements due to the use of independent Cr, Al and Si targets; MinSuKang 等人(MinSuKang等人,SynthesisandpropertiesofCr-Al-Si-Nfilmsdepositedbyhybridcoatingsystemwithhighpowerimpulsemagnetronsputtering(HIPIMS)andDCpulsesputtering[J]TransactionsofNonferrousMetalsSocietyofChina,2012,22:729-734)采用高功率脉冲磁控溅射与直流脉冲溅射的复合工艺(highpowerimpulsemagnetronsputtering( HIPIMS) and DCpulsesputtering), but the above-mentioned new technology not only requires high investment in equipment, but also is extremely difficult to control the process technology, which largely limits its promotion and application in the same industry in China
[0007] Cathodic arc ion plating CrN film (3 ~ 5μm) has a surface hardness of about HV1000 ~ 1500, which has good wear resistance and scratch resistance. However, for watch appearance parts, its inherent large particles will inevitably affect the coating. Surface finish and decorative color (the appearance of CrN coating is darker, so its visual effect is not good)

Method used

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  • Preparation method of functional gradient multi-layer nano coating on surface of steel workpiece and product comprising functional gradient multi-layer nano coating
  • Preparation method of functional gradient multi-layer nano coating on surface of steel workpiece and product comprising functional gradient multi-layer nano coating
  • Preparation method of functional gradient multi-layer nano coating on surface of steel workpiece and product comprising functional gradient multi-layer nano coating

Examples

Experimental program
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Effect test

Embodiment 1

[0149] 1) Pretreatment of stainless steel workpieces: at room temperature, place polished stainless steel watch appearance parts in an ultrasonic cleaner filled with an environmentally friendly water-based metal cleaning solution for surface cleaning and degreasing; then put the cleaned workpieces into ethanol solution for dehydration After drying.

[0150] 2) Ion cleaning on the surface of the workpiece: (1) Place the polished stainless steel watch appearance workpiece in the reaction furnace and keep the vacuum degree in the reaction furnace at 1.0Pa; (2) Control the current of the Ta-HCD electron gun to 80A after arcing , keep the plasma arc of the Ta-HCD source directly irradiating the surface of the workpiece until the temperature in the vacuum chamber reaches 140°C; (3) Keep the vacuum degree in the reaction furnace at 1.0Pa, adjust the current of the Ta-HCD electron gun to 100A, and apply pulses to the workpiece The negative bias voltage is -140V; (4) Start two cathode ...

Embodiment 2

[0161] 1) Pretreatment of stainless steel workpieces: at room temperature, place polished stainless steel watch appearance parts in an ultrasonic cleaner filled with an environmentally friendly water-based metal cleaning solution for surface cleaning and degreasing; then put the cleaned workpieces into ethanol solution for dehydration After drying.

[0162] 2) Ion cleaning on the surface of the workpiece: (1) Place the polished stainless steel watch appearance workpiece in the reaction furnace and keep the vacuum degree in the reaction furnace at 1.0Pa; (2) Control the current of the Ta-HCD electron gun to 80A after arcing , keep the plasma arc of the Ta-HCD source directly irradiating the surface of the workpiece until the temperature in the vacuum chamber reaches 120°C; (3) Keep the vacuum degree in the reaction furnace at 1.0Pa, adjust the current of the Ta-HCD electron gun to 100A, and apply pulses to the workpiece The negative bias voltage is -100V; (4) Start two cathode ...

Embodiment 3

[0174] 1) Pretreatment of stainless steel workpieces: at room temperature, place polished stainless steel watch appearance parts in an ultrasonic cleaner filled with an environmentally friendly water-based metal cleaning solution for surface cleaning and degreasing; then put the cleaned workpieces into ethanol solution for dehydration After drying.

[0175] 2) Ion cleaning on the surface of the workpiece: (1) Place the polished stainless steel watch appearance workpiece in the reaction furnace and keep the vacuum degree in the reaction furnace at 1.0Pa; (2) Control the current of the Ta-HCD electron gun to 80A after arcing , keep the plasma arc of the Ta-HCD source directly irradiating the surface of the workpiece until the temperature in the vacuum chamber reaches 120°C; (3) Keep the vacuum degree in the reaction furnace at 1.0Pa, adjust the current of the Ta-HCD electron gun to 100A, and apply pulses to the workpiece The negative bias voltage is -100V; (4) Start two cathode ...

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Abstract

The invention relates to a preparation method of a functional gradient multi-layer nano coating on the surface of a steel workpiece and a product comprising the functional gradient multi-layer nano coating, particularly discloses a method for depositing the functional gradient multi-layer nano coating on the surface of the steel workpiece and the functional gradient multi-layer nano coating deposited on the surface of the steel workpiece and further relates to the product. The product comprises the steel workpiece and the functional gradient multi-layer nano coating which is deposited on the surface of the steel workpiece and covers at least part of the surface of the steel workpiece. The functional gradient multi-layer nano coating comprises a Cr base layer deposited on the surface of the steel workpiece, a CrN transition layer deposited on the Cr base layer, a (Cr and Si)N gradient layer deposited on the CrN transition layer, and a (Cr, Al and Si)N surface layer deposited on the (Cr and Si)N gradient layer. The functional gradient multi-layer nano coating is mainly in a silver gray color and an imitating stainless steel color, the overall thickness of the functional gradient multi-layer nano coating is 3-5 micrometers, and the surface hardness value of the functional gradient multi-layer nano coating reaches 2000-3000 HV. The functional gradient multi-layer nano coating is high in glossiness, bonding strength and surface hardness and excellent in abrasion resistance and corrosion resistance.

Description

technical field [0001] The invention relates to a method for depositing a functional gradient nanometer multilayer coating on the surface of a steel workpiece and the functional gradient nanometer multilayer coating deposited on the surface of the steel workpiece. The invention also relates to an article comprising said steel workpiece and said functionally graded nano-multilayer coating deposited on the surface of said steel workpiece and covering at least a part of said steel workpiece surface. Background technique [0002] The traditional method of forming a wear-resistant, corrosion-resistant and anti-oxidation coating on the surface of steel workpieces, especially stainless steel workpieces, is to electroplate hard chromium on the surface, but the hexavalent chromium produced during electroplating will seriously pollute the environment, so it is gradually vacuum ion plating ( IonPlating) nitride coating instead. CrN (chromium nitride) coating has the advantages of high...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/35C23C14/16C23C14/06
CPCC23C14/0641C23C14/16C23C14/325C23C14/352C23C14/354
Inventor 赵可沦刘海华王永宁
Owner ZHUHAI ROSSINI WATCH IND
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