摘要
设计并制造了能同时满足金属基复合材料液相成型、界面结构与材料性能的多种要求的多功能梯度涂层.用化学气相沉积法完成了涂层制备,并用于C/Al复合材料.采用液相浸渗工艺制备的试样抗拉强度最高达1225MPa,接近理论计算值.获得了预期的界面结构,成分分布和润湿效果,考察了软质层、梯度层及润湿层对复合材料断裂形式及抗拉强度的影响,确定了各层最佳厚度.
A multi-functional gradient fiber coating was produced to meet the require-ments of liquid-fabrication, interface structure and properties of composites. The coating, in-cluding wettable,gradient and soft layers, was designed according to physical,chemical andmechanical mechanism, and has been fabricated with chemical vapour deposition. The desir-ous interfacestructure, profile of composition and wetting effect were achieved after applyingthe coating to C/Al composites fabricated by liquid-infiltration. The highest tensile strengthof samples is up to 1225 MPa, appproaching to the theoretical value. The influences of soft,gradient and wettable layers on the fracture mode and strangth of composites were studied,and the optimum thickness of each layer was gained experimentally.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第11期B521-B526,共6页
Acta Metallurgica Sinica
基金
国家自然科学基金
关键词
复合材料
金属基
涂层
梯度功能
metal matrix composite
coating
interface
functional gradient material
