New routes for design of multifunctional thin films
- Reference number
- UKR24-0006
- Project leader
- Rogoz, Vladyslav
- Start and end dates
- 240801-261231
- Amount granted
- 999 588 SEK
- Administrative organization
- Linköping University
- Research area
- Materials Science and Technology
Summary
This project delves into fundamental research on innovative physical vapor deposition (PVD) techniques for energy-efficient synthesis of advanced wear-resistant ceramic coatings for cutting tool applications. The scientific hurdle lies in generating metal-ion fluxes with meticulously controlled temporal energy profiles and understanding their effect on the growth of ceramic thin films. We will explore an original PVD growth concept developed within our research group, which aims at replacing the traditional use of thermal energy from resistive heaters with high-mass metal ion irradiation of the growing film surface. The process energy is used at the substrate side instead of being wasted for heating the entire vacuum chamber. A synergistic approach involving low-temperature deposition and subsequent aging has emerged as a potent strategy for enhancing the physical and mechanical properties of coatings. This multi-stage heat treatment process leads to multiple types of precipitates including Guinier-Preston (GP) zones recently discovered by our group in transition metal nitrides. Preliminary results suggest that post-deposition heat treatment significantly enhances the physical and mechanical properties of coatings. These promising results underscore the transformative potential of this non-thermal deposition technique, paving the way for a new era of energy-efficient, rapid, and versatile coating processes with wide-ranging applications in various sectors.
Popular science description
We are developing a new type of thin-film deposition method that uses a combination of two existing techniques to create stronger, more durable films at lower temperatures. This reduces energy consumption and expands the range of materials that can be coated. The key innovation is the ability to control the energy and momentum of the metal ions during deposition, ensuring that the desired materials are deposited accurately. Adding a small amount of tungsten (up to 5%) to the films has been shown to create structures called Guinier-Preston zones. These structures act as barriers to dislocation movement, making the films even stronger and more durable. This innovative hybrid deposition method has the potential to revolutionize the field of wear-resistant coatings for applications in aerospace, automotive, and cutting tools. The reduced energy consumption, improved film properties, and wider applicability make this a promising new technology.