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Innovation application: Treatment of Materials by Laser Radiation

Title Treatment of Materials by Laser Radiation
Abstract

We propose the treatment of different solid materials by laser radiation. Pulsed lasers are used to create a temperature gradient. As a result, one can oxidize or recrystallize the material, purposefully change its hardness, hydrophobicity, phase, and/or redistribute atoms in solid solutions. The use of laser radiation makes it possible to structure the surface on a micro or nano scale or control its roughness.

Keywords laser treatment, Nd:YAG laser, surface modification
Authors Artūrs Medvids
Pāvels Onufrijevs
Aleksandrs Mičko
Department (14500) Tehniskās fizikas institūts
Statistical Classification of Economic Activities, NACE 2 Architectural and engineering activities; technical testing and analysis
Description of the technology

We propose the irradiation of materials (metals, semiconductors, polymers) with Nd:YAG laser radiation. Laser parameters: wavelength: 1064 nm; 532 nm; 266 nm; pulse duration 3-6 ns; pulse energy: up to 240 mJ, repeating frequency 10 Hz. The laser is controlled by a computer software that also controls the 2D manipulator. Sample sizes could be both very small (some mm) and relatively large (1 m). Depending on laser parameters, one can perform oxidation of a metal, recrystallization, purposefully change hardness, hydrophobicity, roughness or phase and/or redistribute atoms in solid solutions. Using laser radiation, it is possible to structure the surface on a micro or nano scale.

Fig. 1. Nd:YAG laser.

Applications Pulsed laser processing of materials can be applied to metal, semiconductors or polymer surface treatment.
Advantages

Laser treatment of materials is a fast and effective method and can be applied locally to the surface. The method can be easily integrated into production process and the processing method has a high repeatability.

Technology Readiness Level Actual system proven in operational environment
Partnership offer • Service contracts.
ID 117
Contact information Linda Šufriča, e-mail: inovacijas@rtu.lv; phone.: 28442736