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The adoption of lubricants in metal forming processes at high temperatures holds particular significance. This practice facilitates reducing friction and wear, enhances metal formability, prevent seizure and galling, and extends tool life. However, elevated temperatures cause changes in lubricant properties, making it difficult to maintain effective lubrication. These changes may negatively affect the quality and efficiency of the forming process. Given the severity undergone at high temperatures, several solid inorganic salts are reported as an alternative to exhibit favourable lubrication performance. In this study, the lubrication performance of environmentally friendly albite (NaAlSi₃O₈) was evaluated through ball-on-disc tests at elevated temperatures ranging from 550 to 950°C. The results demonstrate that albite can effectively decrease friction and wear loss across the tested temperature range, with a more pronounced effect at higher temperatures (890 and 950°C). The high-temperature lubrication mechanism of albite is attributed to the formation of a thick layer containing Na, Si, and O elements within the tribo-interface, which prevents direct contact between rubbing surfaces.

26:T4b9,

Titanium alloys are used in the automotive and aerospace industries, but perform poorly at high temperatures due to inadequate wear and friction properties. This study investigates Cr₃C₂-25%CoNiCrAlY and WC-CoCr coatings applied via High-velocity oxygen Fuel on a titanium-31 substrate. Coatings were evaluated from 200–800 °C under 20 N and 30 N using a ball-on-disc tribometer. Characterization techniques included scanning electron microscope, X-ray diffraction, microhardness, porosity, and bond strength. WC-CoCr coating showed higher hardness and bond strength than Cr₃C₂-25%CoNiCrAlY. Both coatings exhibited reduced wear rates until 600 °C, after which the wear rates increased at 800 °C due to enhanced oxidation. The coefficient of Friction decreased with increasing temperature. At 600 °C, oxide phases helped reduce wear and friction. WC-CoCr coating shows better wear resistance than Cr₃C₂-25%CoNiCrAlY coating and the substrate. Wear mechanisms changed from abrasive and fatigue at 200 °C to oxidative and adhesive at 800 °C. Volumetric ball loss was higher for WC-CoCr due to its greater hardness.

27:T536,

The environmental and health concerns associated with conventional brake pad materials containing heavy metals and toxic additives, hence necessitate the development of sustainable friction composites. This study presents an eco-friendly brake pad material reinforced wit