TTribology Letters4/9/2026The Synergistic Effect of DLC Coating and Diketone/Nanocopper Hybrid Additive in Marine Engine OilYuwen Xu·Ke Li·Haonan Zeng·JingSi Wang·Dan Jia·Tobias Amann·Chengqing Yuan·Yan YangRead at Tribology LettersTagsLubricants and Their AdditivesMechanical Engineering