Method for altering metal surface color with ultra-short pulse laser

An ultra-short pulse laser and metal surface technology, which is applied in laser welding equipment, metal processing equipment, metal material coating technology, etc., can solve the problems of difficult to achieve color diversity and easy peeling of color layers

Inactive Publication Date: 2009-02-18
BEIJING UNIV OF TECH
View PDF0 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these methods, the metal surface is coated with pigments, and the color layer is easy to fall off, while other methods are difficult to achieve color diversity.

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 altering metal surface color with ultra-short pulse laser
  • Method for altering metal surface color with ultra-short pulse laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described below:

[0022] The selected metal materials should first be polished to obtain a bright and clean surface. According to different samples, various polishing processes such as mechanical polishing, chemical polishing, and vibration polishing can be used. The polished metal sample is placed on the translation stage 8, such as figure 2 shown. The pulsed laser light emitted by the ultrashort pulse laser 1 passes through the shutter 2 , the light intensity adjuster 3 , the spatial light intensity shaper 4 , the light polarization adjuster 5 , and the optical focusing system 6 in sequence, and then acts on the metal sample 7 .

[0023] The metal sample in this embodiment is titanium, and the titanium sample is placed under a femtosecond pulsed laser. The femtosecond pulsed laser selected in this embodiment has a center wavelength of 800nm, a bandwidth of 80nm, a pulse width of 15fs, and vertical linear polarization. A 200mm ...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for changing the color and lustre on a metal surface by an ultra-short pulse laser, which relates to the field of processing the surface of metal material. In the invention, an ultra-short pulse laser beam with a pulse width between 2 femtosecond and 100 picosecond is used to directly radiate the metal surface; different micron and even nanometer structures are formed on the metal surface through controlling the parameters like energy and polarization of the pulse laser; the forming of the nanometers makes the metal surface realize selective reflection phenomenon on the light at different angles and lead the metal surface to be seen to have a plurality of different metal colors. The technology can be applied for the manufactures like the color changing and anti-fake brands on the surfaces of metal jewelleries and can obtain polychrome colors like the wings of butterflies.

Description

technical field [0001] The invention relates to a method for changing the color of the metal surface by using an ultrashort pulse laser, which can change the color of the metal surface and belongs to the field of metal material surface treatment. Background technique [0002] There are many technologies to change the color of the metal surface, such as oxidation by flame and laser beam surface treatment to obtain different colors, it can also be realized by surface growth and coating various color layers, and it can also be formed by removing some surface color layers s color. In these methods, the method color layer of metal surface coating pigment is easy to come off, and other methods are difficult to realize the diversity of color. Contents of the invention [0003] The present invention proposes a method for changing the color of metal surface by using ultra-short pulse laser. The method uses ultra-short pulse laser to prepare surface submicron structure. The selecti...

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): C23C8/10B23K26/00B82B3/00B23K26/352
Inventor 刘世炳黄永光刘院省
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap