Phase Formation and Wear Resistance of Carbon-Doped TiZrN Nanocomposite Coatings by Laser Carburization

Abstract

Carbon-doped TiZrN nanocomposite coatings were investigated for phase formation and wear behavior. They were prepared by laser carburization using carbon paste, and the thermal energy of the pulsed laser was limited to the range of 20 to 50%. X-ray photoelectron spectroscopy analysis revealed that the ratio of carbide (TiC, ZrC) increased as the thermal energy of the laser increased. The sp2/sp3 ratio increased by approximately 16% when the laser thermal energy was raised from 30 to 40%, and the formation of amorphous carbon was confirmed in the carbon-doped TiZrN coatings. As a result of microstructural analysis, the carbon-doped TiZrN nanocomposite was formed by an increase of hybrid bonds in expanded localized carbon clusters. Wear resistance was evaluated using a ball-on-disc tester, which showed that the friction coefficient decreased from 0.74 to 0.11 and the wear rate decreased from 7.63 × 10−6 mm3 (Nm)−1 to 1.26 × 10−6 mm3 (Nm)−1. In particular, the friction coefficient and wear rate improved by 71 and 66%, respectively, owing to the formation of carbon-doped TiZrN nanocomposite with amorphous carbon while the thermal energy was increased from 30 to 40%.

The Bonding State and Surface Roughness of Carbon-Doped TiZrN Coatings for Hydrogen Permeation Barriers

“…This carbon paste was applied to the TiZrN coatings and dried at 80 • C. Subsequently, carburization of the coating surface was performed using a Nd:YAG pulsed laser ablation system (LSX-213), with the laser output being adjusted in 10% intervals from 20% to 50%. After the laser carburization process, any remaining carbon paste on the coating surface was removed through ultrasonication, acetone, and ethanol cleaning [32,33].…”

Fabrication of Nanocomposite Coatings and Application in Outdoor Architectural Design

“…After adding the coating, it can play the role of anti-ultraviolet and anti-heat aging to improve thermal insulation performance. Applying the nano-silica coating on the ship body can significantly improve the corrosion resistance of the coating with good self-cleaning and adhesion [14].…”

Development and Research of New Hybrid Composites in Order to Increase Reliability and Durability of Structural Elements

“…High-entropy materials and ceramic wear-resistant materials as surface layers [3][4][5][6][7][8][9][10][11][12][13] or as part of surface composites [14][15][16][17][18][19][20] ensure an effective response to external factors and adaptation to external influences. High-energy technologies provide nanostructuring.…”

“…They include high-entropy layers and ceramic wear-resistant layers [2], which are formed using a multifunctional technological complex. The technologies for surface-layered composites are mainly used to improve the properties of products [14][15][16][17][18][19][20][21]. Layered surface composites that have a range of properties are relevant for various industries (oil and gas, aerospace, mechanical engineering, etc.).…”