铜箔的退火过程是什么？退火铜箔具有什么特征？

退火过程铜箔是铜箔生产的重要一步。 It involves heating the copper foil to a certain temperature, holding it for a period, and then cooling it to improve the crystal structure and properties of the copper foil. The main purpose of annealing is to relieve stress, improve crystal structure, enhance the ductility and toughness of the copper foil, reduce resistivity, and improve electrical conductivity.

在生产过程中滚动的铜箔，退火是通常在冷滚后发生的关键步骤。 The production process of rolled copper foil includes melting, casting, hot rolling, cold rolling, annealing, further cold rolling, degreasing, surface treatment, inspection, and slitting and packaging. The annealing process of rolled copper foil can improve its resistance to bending because it has a flaky crystalline structure with high orientation on the (200) crystal plane, which generates slip bands after bending, alleviating the passive accumulation inside during bending.

退火铜箔的特征包括：

改善的晶体结构：退火可以重新排列铜箔中的晶体，减轻或消除压力。

增强的延展性和韧性：由于压力的减轻，铜箔变得更加可行和可塑。

电阻率降低

增强的耐腐蚀性

铜箔，这间接影响退火铜箔的性能。