fig8
Figure 8. Types of copper alloys with layered heterogeneous structure. (A) Cu-CuCrZr[89] (Reprinted from Ref.[89], with permission from Elsevier). (B) W-Cu[90] (Quoted with permission from Han et al.[90], under the CC BY 4.0 license, http://creativecommons.org/licenses/by/4.0/). (C) Graphene-Copper[91] (Reprinted from Ref.[91], with permission from Elsevier).
