摘要
采用真空压力渗透法制得Cu电镀液涂覆处理后的碳纤维(CF)增强Al-Cu基复合材料,进行力学性能测试并观察其显微组织。结果表明:对碳纤维表面进行镀Cu处理后形成了具有致密组织、厚度约1μm的界面层,界面层与碳纤维之间形成了紧密结合状态。碳纤维和Al-Cu基体之间形成了良好结合,未发现与Al-Cu基体呈分离状态的碳纤维束。碳纤维已被Al-Cu液充分渗透,未发现有孔隙出现。相对于Al-Cu基体,复合材料内除包含C与Al之外,还存在Al2Cu金属间化合物。相比Al-Cu基体,CF/Al-Cu基复合材料试样的抗拉强度得到明显提高。在断裂阶段碳纤维束内形成了许多微裂纹,此时形成了阶梯状的断口,并且断口部位也具有平整的结构。
The carbon fiber reinforced Al-Cu matrix composite coated with Cu electroplating solution was prepared by vacuum pressure infiltration method,and the mechanical properties of the samples were tested and the microstructure was observed.The results show that the surface of carbon fiber is plated with Cu to form an interface layer with compact structure and thickness of about 1μm.A good bonding state is formed between carbon fiber and Al-Cu matrix,but no carbon fiber bundles separated from Al-Cu matrix is found.The carbon fiber has been fully permeated by the Al-Cu liquid,and no voids are found in the matrix.In addition to C and Al,Al2 Cu intermetallic compound also exists in the composite material compared with the Al-Cu substrate.Compared with AlCu substrate,the tensile strength of CF/Al-Cu matrix composite is significantly increased.Many microcracks are formed in the carbon fiber bundle at the fracture stage,and stepped fractures are formed at this time,and the fracture site also has a flat structure.
作者
韦玉堂
崔素华
WEI Yu-tang;CUI Su-hua(College of Mechanical Engineering,Hebei University of Science and Technology,Shijiazhuang 050000,China)
出处
《粉末冶金工业》
CAS
北大核心
2019年第4期42-46,共5页
Powder Metallurgy Industry
