The effect of recycled zinc powder content on the properties of novel novolac matrix hybrid composites

In this study, effect of recycled zinc powder reinforcement ratios and ball milling time on novolac matrix hybrid composites were investigated. The ball milling time of 2 h showed a positive effect on the hardness of the composites up to 100 HRM. Thermal analysis results showed that the increasing zinc reinforcement ratio was increased thermal stability of the composite powders. The assessment of wear resistance was conducted using a block-on-ring tribometer, and the results demonstrated that the incorporation of zinc particles significantly decreased wear rates. Additionally, 2 h ball milling times showed superior wear resistance. Specimens with 20 wt % Zn reinforcement and subjected to 2 h ball milling time exhibited approximately 93% less wear loss than Zn-free specimens.

Automated summary

This study investigated the effect of recycled zinc powder reinforcement ratios and ball milling time on novolac matrix hybrid composites. Results showed that a ball milling time of 2 h positively influenced the hardness of the composites, reaching 100 HRM. Thermal analysis indicated that increasing zinc reinforcement ratios improved the thermal stability of the composite powders. Wear resistance assessment using a block-on-ring tribometer revealed that the incorporation of zinc particles significantly reduced wear rates, with specimens subjected to 2 h ball milling times showing superior wear resistance. Specimens with 20 wt% Zn reinforcement and 2 h ball milling time exhibited roughly 93% less wear loss than Zn-free specimens.