Pengaruh Variasi Penambahan Zat Aditif Graphene Dan Surfactant SPAN 60 Terha…

Tribology is the science that focuses on friction, wear, and lubrication of surfaces interacting in relative motion. Lubrication is an effective way to minimize friction and wear. To reduce the use of environmentally unfriendly mineral oil-based lubricants, alternative lubricant sources, such as vegetable oils, are being explored. One commonly studied vegetable oil in current research is palm o…