Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for forming rare earth film on metal surface and applications thereof

A metal surface, rare earth technology, applied in the field of forming rare earth film on metal surface, can solve the problems of limited use of chromate, difficult to meet the requirements of corrosion resistance, toxicity of hexavalent chromium, etc. effect of corrosion

Inactive Publication Date: 2010-09-01
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong toxicity of hexavalent chromium, many countries have listed chromate as one of the most harmful compounds, and the use of chromate has been strictly restricted.
Other anti-corrosion materials are difficult to meet the corrosion resistance requirements in the above special environment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for forming rare earth film on metal surface and applications thereof
  • Method for forming rare earth film on metal surface and applications thereof
  • Method for forming rare earth film on metal surface and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 AA5083 aluminum alloy is subjected to surface electric pulse deposition to form a Ce oxide film

[0039]Firstly, the AA5083 aluminum alloy is pretreated according to the above steps, that is, the surface of the AA5083 aluminum alloy is mechanically polished, cleaned, degreased, derusted, etc., and then the pretreated AA5083 aluminum alloy is placed in a 0.1mol / L Ce(NO 3 ) 3 In an ethanol solution, at a temperature of 25°C, with a stainless steel electrode as an anode, under a pulse voltage with an applied potential of 12V and a duty cycle of 50%, the duration of each pulse is 0.1 seconds, and the electric pulse deposition treatment time is 120 seconds. A uniform and dense rare earth cerium organic complex thin film was obtained by electric pulse deposition on the sample. Then, spray gas fireworks with a flame spray gun, burn the surface of the rare earth cerium organic complex film deposited on the surface of the aluminum alloy with a gas flame spray gun, an...

Embodiment 2

[0040] Example 2 AA6061 aluminum alloy is subjected to surface electric pulse deposition to form a Ce oxide film

[0041] The AA6061 aluminum alloy is first pretreated according to the above steps, that is, the surface of the AA6061 aluminum alloy is mechanically polished, cleaned, degreased, and rusted, and then the pretreated AA6061 aluminum alloy is placed in a 0.05mol / L Ce(NO 3 ) 3 In an ethanol solution, at a temperature of 30°C, with a graphite electrode as an anode, under a pulse voltage with an applied potential of 10V and a duty cycle of 60%, the duration of each pulse is 0.2 seconds, and the electric pulse deposition treatment time is 180 seconds. A uniform and dense rare earth cerium organic complex thin film was obtained by electric pulse deposition on the sample. Then, spray gas fireworks with a flame spray gun, burn the surface of the rare earth cerium organic complex film deposited on the surface of the aluminum alloy with a gas flame spray gun, and use the ou...

Embodiment 3

[0042] Example 3 AA5083 aluminum alloy is subjected to surface electric pulse deposition to form a Ce oxide film

[0043] Firstly, the AA5083 aluminum alloy is pretreated according to the above steps, that is, the surface of the AA5083 aluminum alloy is mechanically polished, cleaned, degreased, derusted, etc., and then the pretreated AA5083 aluminum alloy is placed in a 0.1mol / L Ce(NO 3 ) 3 In ethanol solution, at a temperature of 20°C, with a stainless steel electrode as an anode, under a pulse voltage with an applied potential of 12V and a duty cycle of 50%, the duration of each pulse is 0.1 seconds, and the treatment time of electric pulse deposition is 120 seconds. A uniform and dense rare earth cerium organic complex thin film was obtained by electric pulse deposition on the sample. Then, place the AA5083 aluminum alloy forming rare earth cerium organic complex film in the furnace tube of the carbon-fixing furnace, pass high-purity nitrogen (99.999%) for 30 minutes to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for forming a rare earth film on metal surface. The method comprises the following steps: preprocessing the metal surface to be processed; placing the preprocessed metal in the ethanol solution of cerium salt, performing impulse electrodeposition to form a rare earth cerium organic complex film on metal surface; and baking the rare earth cerium organic complex film on metal surface to form an oxide film of rare earth cerium. The invention also provides the applications of the method in the preparation of anticorrosive metal workpieces. The method adopts the impulse electrodeposition method to form the rare earth cerium organic complex film on the surface of the metal in the ethanol solution of cerium salt and can form the uniform and dense oxide film of rare earth cerium after baking so that the protective layer on metal surface can be formed and the corrosion resistance of metal surface can be increased; and the method can be widely used for the metal workpieces with various anticorrosive demands and have wide application prospects.

Description

technical field [0001] The invention relates to the technical field of metal surface modification, in particular to a method for forming a rare earth film on a metal surface and its application. Background technique [0002] In various fields of production and life, metal materials, such as steel and metal materials, are widely used. In order to increase their service life, the anti-corrosion problem of these metal surfaces has always been closely concerned by people. In order to solve the anti-corrosion problem, people continue to develop new anti-corrosion materials. The most commonly used anti-corrosion method is to spray paint. However, paint is usually used in wood furniture, and it is not suitable for some workpieces that require heavy anti-corrosion or are used in special environments. [0003] For example, the shell material of explosion-proof lamps used in petrochemical plant areas and offshore platforms is aluminum alloy. However, local corrosion (such as pitting ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/18C25D5/50
Inventor 周明杰彭云龙
Owner OCEANS KING LIGHTING SCI&TECH CO LTD