Lubricants are taught that can quickly and easily form a lubricating layer on a metal surface of a metal before plastic processing. Such lubricants preferably include a primary lubricating agent or component having a bridge complex that satisfies the following conditions: (1) the complex contains at least two central metal atoms; (2) at least one first multidentate ligand forms a bridge between two central metal atoms; and (3) at least one second multidentate ligand is bound to at least one central metal atom and has at least one coordinating atom that can coordinate with metal atoms, but which is not coordinated with any of the central metal atoms or is only partially coordinated with at least one of those central metal atoms. A third multidentate ligand is preferably also bound to one of the central metal atoms and may preferably include at least two sulfur atoms that are coordinated to the central metal atom.
本发明所教导的润滑剂可在塑性加工前快速、轻松地在
金属表面形成润滑层。这种润滑剂最好包括一种主润滑剂或成分,它具有满足以下条件的桥式配合物:(1) 配合物含有至少两个中心
金属原子;(2) 至少有一个第一多叉
配体在两个中心
金属原子之间形成桥式;(3) 至少有一个第二多叉
配体与至少一个中心
金属原子结合,并具有至少一个可与
金属原子配位的配位原子,但该配位原子未与任何一个中心
金属原子配位或仅与至少一个中心
金属原子部分配位。第三种多叉
配体最好也与其中一个中心
金属原子结合,最好包括至少两个与中心
金属原子配位的
硫原子。