摘要
以机械共混法在普通碳钢基体上制备了多种FEP/PPS共混改性防腐涂层,利用光学显微镜(OM)、电子探针(EPMA)研究了FEP/PPS共混涂层的微观结构、成分分布,采用拉伸法测定了FEP/PPS共混涂层与钢基体的结合强度,研究了共混组分PPS对复合防腐涂层结合强度的影响。结果表明,随着共混涂层中PPS组分的增加,共混涂层由典型的"海-岛结构"变为两相连续的"海-海结构",使涂层/钢基体结合强度有大幅度提高,拉断形式由涂层与基体界面光滑开裂,转变为涂层内聚开裂。
Several blending FEP/PPS anti-corrosive coatings were prepared on ordinary carbon steel substrate by mechanical blending. The microstructure, composition distribution of the coating, binding strength between the FEP/PPS coating and substrate were studied by optical microscope, electron probe microanalyser, electric tensile testing machine. The effect of the PPS blending ratio on the binding strength of anti-corrosive composite coatings were discussed. The results indicate that the structure of blending coating varies from the typical “sea-island” to “sea-sea” when the PPS content increases ,which results in the considerable improvement of binding strength, and in the changes of tensile failure mode from adhesive one to cohesive one.
出处
《金属热处理》
CAS
CSCD
北大核心
2008年第2期51-55,共5页
Heat Treatment of Metals
基金
山东省中青年科学家奖励基金(2007BS04012)