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碳纤维的强度高、刚度高、密度低、热膨胀系数小(-0.1～0.21×10~2/℃)导电、导热,而且尺寸稳定性好,石墨本身还具有自润滑作用,因此作为金属基复合材料的增强物是很引人注目的。目前所供应的细的多丝纤维束是由1,000～10,000根丝组成的,每根丝的平均直径为7微米。如何使被增强的基体金属充分地包围每根纤维丝,成为这类复合材料制备中的一个问题,本文用液态基体金属渗透法来制备碳纤维增强铅及其合金,並对此种复合材料的制造工艺以及所得到的拉伸性能和断口形貌进行了初步分析。
Carbon fiber has the advantages of high strength, high rigidity, low density, small thermal expansion coefficient (-0.1 ~ 0.21 × 10 ~ 2 / ℃), good thermal conductivity and dimensional stability. Graphite itself also has self-lubricating effect. The enhancements are striking. The currently supplied fine multifilament fiber bundle consists of 1,000 to 10,000 filaments each having an average diameter of 7 microns. How to make the reinforced matrix metal sufficiently enclose each filament becomes a problem in the preparation of such composite materials. In this paper, liquid matrix metal infiltration method is used to prepare carbon fiber reinforced lead and its alloys, and the manufacture of such composite materials Process and the resulting tensile properties and fracture morphology were analyzed.