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A theoretical and experimental study of phosphate ester inhibitors for AISI 1018 in carbon dioxide-saturated 3.5 wt% NaCl solution
Materials and Corrosion ( IF 1.6 ) Pub Date : 2021-03-16 , DOI: 10.1002/maco.202112365
Roberta Bastos Vasques 1 , Marjory Moreira Levy 1 , Matheus Souza Rodrigues 1 , Francisco Wagner Queiroz Almeida Neto 2 , Leonardo Paes Silva 2 , Gustavo Leitão Vaz 3 , Álvaro Augusto Oliveira Magalhães 3 , Pedro Lima‐Neto 2 , Walney Silva Araújo 1
Affiliation  

Phosphate ester was investigated as a corrosion inhibitor for AISI 1018 carbon steel in carbon dioxide-saturated chloride solutions at different temperatures and pressures. The corrosion tests were realized by electrochemical techniques, weight loss measurements, bubble tests, and a high-pressure/high-temperature autoclave system. The corrosion tests demonstrated that the investigated molecule is an excellent corrosion inhibitor. The inhibiting effect is even bigger at high pressure and temperature than at atmospheric pressure and room temperature. The thermodynamic parameters were calculated and determined to obey the Langmuir isotherm. Polarization studies revealed that the evaluated inhibitor is a mixed type.

中文翻译:

AISI 1018 在二氧化碳饱和的 3.5 wt% NaCl 溶液中磷酸酯抑制剂的理论和实验研究

在不同温度和压力下,在二氧化碳饱和氯化物溶液中研究了磷酸酯作为 AISI 1018 碳钢的缓蚀剂。腐蚀测试是通过电化学技术、重量损失测量、气泡测试和高压/高温高压釜系统实现的。腐蚀试验表明,所研究的分子是一种极好的腐蚀抑制剂。在高压和高温下的抑制作用甚至比在大气压和室温下更大。计算并确定热力学参数以符合朗缪尔等温线。极化研究表明,评估的抑制剂是一种混合型。
更新日期:2021-03-16
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