Improving high‐temperature tribological properties of phosphate ceramic coatings via aligned SiC whisker reinforcement

Abstract Titanium alloys offer high strength‐to‐weight ratios and corrosion resistance but lack sufficient wear resistance, especially at elevated temperatures, limiting their use in high‐friction environments. To address this, we propose modifying SiC whiskers with Fe 3 O 4 (Fe 3 O 4 /SiCw) to achieve controllable alignment in chemically bonded phosphate ceramic coatings (CBPCs) via magnetic response. This approach successfully constructs an ordered reinforcement structure in CBPC. We investigated the chemical structure of Fe 3 O 4 /SiCw hybrids and Fe 3 O 4 /SiCw‐reinforced CBPC, along with high‐temperature wear tests, to analyze the effects of Fe 3 O 4 /SiCw content and alignment on wear resistance. Results show that increasing Fe 3 O 4 /SiCw content significantly reduces both the friction coefficient and wear rate of CBPC at high temperatures. Mf‐CBPC5 exhibited the best wear resistance, with wear rates reduced by 19.82% (100°C), 26.14% (250°C), and 53.92% (400°C) compared to CBPC5. The aligned Fe 3 O 4 /SiCw enhances coating compactness, improves load transfer, and stabilizes friction film formation, significantly boosting CBPC's wear resistance.