Abstract:
A composite material is disclosed. The composite material may comprise: a carbon fiber composite (10) and a surface treatment layer (11). The carbon fiber composite (10) may comprise a core layer (12) having a first side (15) and a second side (16 )opposite to the first side (15), and a first set of two carbon fiber layers (13, 14) disposed over at least a portion of the core layer (12) respectively on the first side (15) and the second side (16). Each of the first set of the two carbon fiber layers (13, 14) may comprise carbon fibers aligned in a first direction in a plane. The surface treatment layer (11) may be disposed on the carbon fiber composite (10).
Abstract:
The present invention relates to a multi-layered sheet comprising Mg-based alloy substrate, micro-arc oxidized layers formed on two opposite surfaces of the Mg-based alloy substrate and graphene-based barrier coating on either one or both of the micro-arc oxidized layers, wherein said graphene-based barrier coating comprises 20-70 wt%of graphene based on the total weight of the graphene-based barrier coating, a process for preparing the multi-layerd sheet and the use of the multi-layered sheet as a housing in laptop, tablet PC, desktop computer, smart phone and 3C electronic devices.