DEVELOPMENT OF CFRP-CERAMIC HYBRID MATERILALS APPLIED BY ION BEAM AND EVALUATION OF MECHANICAL PROPERTIES OF DEVELOPED MATERIALS

CFRP的基材是含滑石的聚醚酰亚胺。将Cu膜镀锌到CFRP上，再在Cu膜上镀Cr膜。在1kV加速电压下，采用动态混合法将氮离子注入CFRP表面的Cr-Cu膜中。注入后，分别在333、363、393和423K下退火30min。无论离子注入与否，Cr-Cu膜的上表面显微硬度均为4000，随深度的增加而降低。在0.5mm深度，金属薄膜的显微硬度大于CFRP。随着退火温度的升高，金属膜的粘接强度逐渐增大，达到363K。当退火温度超过363K时，它减小。残余应力表现为金属薄膜顶部表面的张力。退火温度为393K时残余拉伸应力最大。离子注入金属薄膜在室温下存在较高的残余拉伸应力。残余应力对薄膜的粘接强度有较大影响。镀金属可使合金的抗拉强度和抗弯强度提高7-11%。但离子注入对拉伸强度和弯曲强度的提高影响不大。CFRP膜的摩擦系数为0.1，Cr-Cu膜为0.9，植入膜为0.8。金属薄膜比CFRP增加了100倍的磨损量。

The base plastic of CFRP is polyetherimide with talc. The Cu film was galvanized onto the CFRP and then the Cr film was plated on the Cu film. The nitrogen ion was implated in Cr-Cu film on CFRP by using dynamic mixing method under an accelerated voltage of 1kV.After implantation, the samples were annealed at 333, 363, 393 and 423K for 30min. The microhardness of Cr-Cu film was 4000 at the top surface, regardless of ion implantaion, and decreased with increasing the depth. For 0.5mm of depth, the microhardness was greater for metal film than for CFRP.The adhesive strength of metal film increased with increasing annealing temperature to 363K.When the annealing temperature was over 363K, it decreased. The residual stress was tension on the top surface of metal film. The maximum residual tensile stress was obtained at the annealing temperature of 393K.For ion implanted metal film, there was high residual tensile stress at room temperature. The adhesive strength of film was affected by the residual stress.The tensile strength and bending strength were improved by metal plating up to 7-11%. But the ion implantation scarecely affected the improvement of tensile strength and bending strength. The friction coefficient was 0.1 for CFRP, 0.9 for Cr-Cu film and 0.8 for implanted film. The wear volume of ball increased 100 times greater for metal films than for CFRP.