ABSTRACT Aluminum dihydric tripolyphosphate (ADTP) was irradiated by using a 60Co gamma-ray source and a maximum dose up to 150 kGy, subsequently recombined with calcium oxide (CaO) by co-grinding, and the synergistic effects of gamma-ray irradiation and CaO on the anticorrosive performance of irradiated-ADTP on mild steel were studied. The efficiency of irradiated-ADTP and irradiated-ADTP/CaO as corrosion inhibitors for mild steel boards in 3.5% NaCl solution was determined by means of weight-loss determination, Tafel polarization and electrochemical impedance spectroscopy (EIS). The morphology of the irradiated-ADTP particles was observed by scanning electron microscopy (SEM). Results showed that irradiated-ADTP/CaO had good inhibiting properties for steel corrosion in the solution, with an efficiency of around 95% at gamma-ray absorbed dose of 150 kGy. But, the inhibiting efficiency of irradiated-ADTP in the absence of CaO decreased with the dose. The positive effect of the combination of gamma-ray irradiation and CaO was mainly attributed to the loosening lamellar structure of ADTP caused by gamma irradiation, which facilitated the neutralization reaction between ADTP and CaO.

中文翻译：

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γ射线辐照和氧化钙对三聚磷酸二氢铝对低碳钢缓蚀的协同作用

摘要 二氢三聚磷酸铝 (ADTP) 使用 60Co 伽马射线源和最大剂量高达 150 kGy 进行辐照，随后通过共研磨与氧化钙 (CaO) 复合，以及伽马射线辐照和 CaO 的协同作用对辐照-ADTP 对低碳钢的防腐性能进行了研究。通过失重测定、塔菲尔极化和电化学阻抗谱 (EIS) 测定辐照 ADTP 和辐照 ADTP/CaO 作为低碳钢板在 3.5% NaCl 溶液中的缓蚀剂的效率。通过扫描电子显微镜（SEM）观察辐照后的 ADTP 颗粒的形态。结果表明，辐照-ADTP/CaO对溶液中的钢腐蚀具有良好的抑制作用，在伽马射线吸收剂量为 150 kGy 时，效率约为 95%。但是，在不存在 CaO 的情况下，辐照 ADTP 的抑制效率随着剂量的增加而降低。γ射线辐照与CaO结合的积极作用主要归因于γ辐照引起ADTP层状结构松散，促进了ADTP与CaO之间的中和反应。