【摘要】 采用场发射电子探针显微分析仪、扫描电镜、光学显微镜以及恒温恒湿实验箱等研究手段,对双辊铸轧含磷铜低碳钢薄带进行了系统的分析.实验结果表明,铸轧薄带表面附近有富磷层形成,而基体中磷的浓度远低于薄带的名义磷含量.铸轧磷铜钢薄带经冷轧和退火处理后,具有较好的塑性,甚至当磷质量分数高达0.26%时,延伸率仍然在30%以上.同时,它的耐蚀性远优于通过传统工艺方法而获得的磷铜钢薄带,特别是当磷质量分数超过0.15%后,经过一定的腐蚀时间后,它的表面将会产生一层致密的磷化层保护膜,从而使其具有极强的耐蚀性.更多还原

【Abstract】 The low-carbon steel strip containing P and Cu acquired through twin-roll strip casting process,was systematically analyzed by FE-EPMA,SEM,OM as well as constant temperature and humidity testing device.The results indicated that a P-rich layer is formed near the surface of twin-roll cast strip,while the P concentration in the matrix is far lower than the nominal content.After cold-rolling and annealing treatment,the strip containing P and Cu exhibits the better plasticity,and the elongation still keeps above 30% even at P content up to 0.26wt%.Simultaneously,it is far superior in corrosion resistance to that by the conventional process.Especially a dense phosphate layer will be formed on the surface after a certain corrosion time when the P content over 0.15 wt%,which makes the corrosion resistance excellent.更多还原