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离子注入是一种“原子级别”表面处理技术，它能改善某种金属近表面层范围的结构，产生一种新的合金而不会改变零件尺寸。这种工艺最常用来增强抗磨损性，但有时候也用它来提高抗腐蚀性。金属在离子注入之后，其承受粘着和磨粒磨损的表面使用寿命可以提高2～100倍。
Ion implantation is an “atomic level” surface treatment that improves the structure of a metal near the surface layer and creates a new alloy without changing the part size. This process is most commonly used to enhance abrasion resistance, but sometimes it is also used to improve corrosion resistance. Metal ion implantation, the surface of its adhesive and abrasive wear can improve the life of 2 to 100 times.