Preparation and Tribological Performance Analysis of Calcium Borate/Graphene Lubricant Additives. - Hou, Xianbin; Guo, Jingyao; Yan, Songyin; Tang, Huahao; Liu, Runze; Dai, Leyang; Wang, Weiwei; Lao, Chunbang (Journal of Materials Engineering & Performance, 2026)