表面技术
錶麵技術
표면기술
Surface Technology
2015年
11期
79-86
,共8页
HPAA%缓蚀剂%复配缓蚀剂%腐蚀率%缓蚀率%响应面法
HPAA%緩蝕劑%複配緩蝕劑%腐蝕率%緩蝕率%響應麵法
HPAA%완식제%복배완식제%부식솔%완식솔%향응면법
HPAA%corrosion inhibitor%compound corrosion inhibitor%corrosion rate%inhibition rate%response surface method
目的 运用响应面分析法考察缓蚀剂2-羟基膦乙酸( HPAA)的缓蚀效果. 方法 通过单因素灵敏度分析法考察pH值、HPAA质量浓度、温度对Q235钢腐蚀的影响,确定取值范围. 基于响应面优化分析法( RSM) ,根据单因素实验结果,采用中心组合设计原则( CCD)对质量浓度、温度、pH值进行优化实验设计. 以HPAA的缓蚀率为响应值,采用RSM对响应数值进行方程回归,对得到的二次关联模型进行优化,并将优化的参数条件应用于复配缓蚀剂进行SEM和EIS分析. 结果 质量浓度、温度、pH值的优化取值范围分别为20~26 mg/L,45~55 ℃和8~10. RSM优化后参数为:质量浓度23 mg/L,温度50 ℃, pH=9. 0,HPAA的缓蚀率最优为68. 68%. 实验获得的缓蚀率为68. 78%,与预测值偏差为0. 15%. 将优化的参数应用于缓蚀剂的复配,ρ(HPAA):ρ(Na2MOO4):ρ(Na2B4O7)=0. 5:0. 3:0. 5时,复配的缓蚀剂用量最少且缓蚀率最高可达到93 . 75%. 此复配缓蚀剂在SEM图中光亮无腐蚀,并且在EIS谱中表现出纯电容性,阻抗最大、缓蚀率最高. 结论 响应面法和SEM,EIS结合运用在HPAA的缓蚀性能研究中是可行、准确、可靠的.
目的 運用響應麵分析法攷察緩蝕劑2-羥基膦乙痠( HPAA)的緩蝕效果. 方法 通過單因素靈敏度分析法攷察pH值、HPAA質量濃度、溫度對Q235鋼腐蝕的影響,確定取值範圍. 基于響應麵優化分析法( RSM) ,根據單因素實驗結果,採用中心組閤設計原則( CCD)對質量濃度、溫度、pH值進行優化實驗設計. 以HPAA的緩蝕率為響應值,採用RSM對響應數值進行方程迴歸,對得到的二次關聯模型進行優化,併將優化的參數條件應用于複配緩蝕劑進行SEM和EIS分析. 結果 質量濃度、溫度、pH值的優化取值範圍分彆為20~26 mg/L,45~55 ℃和8~10. RSM優化後參數為:質量濃度23 mg/L,溫度50 ℃, pH=9. 0,HPAA的緩蝕率最優為68. 68%. 實驗穫得的緩蝕率為68. 78%,與預測值偏差為0. 15%. 將優化的參數應用于緩蝕劑的複配,ρ(HPAA):ρ(Na2MOO4):ρ(Na2B4O7)=0. 5:0. 3:0. 5時,複配的緩蝕劑用量最少且緩蝕率最高可達到93 . 75%. 此複配緩蝕劑在SEM圖中光亮無腐蝕,併且在EIS譜中錶現齣純電容性,阻抗最大、緩蝕率最高. 結論 響應麵法和SEM,EIS結閤運用在HPAA的緩蝕性能研究中是可行、準確、可靠的.
목적 운용향응면분석법고찰완식제2-간기련을산( HPAA)적완식효과. 방법 통과단인소령민도분석법고찰pH치、HPAA질량농도、온도대Q235강부식적영향,학정취치범위. 기우향응면우화분석법( RSM) ,근거단인소실험결과,채용중심조합설계원칙( CCD)대질량농도、온도、pH치진행우화실험설계. 이HPAA적완식솔위향응치,채용RSM대향응수치진행방정회귀,대득도적이차관련모형진행우화,병장우화적삼수조건응용우복배완식제진행SEM화EIS분석. 결과 질량농도、온도、pH치적우화취치범위분별위20~26 mg/L,45~55 ℃화8~10. RSM우화후삼수위:질량농도23 mg/L,온도50 ℃, pH=9. 0,HPAA적완식솔최우위68. 68%. 실험획득적완식솔위68. 78%,여예측치편차위0. 15%. 장우화적삼수응용우완식제적복배,ρ(HPAA):ρ(Na2MOO4):ρ(Na2B4O7)=0. 5:0. 3:0. 5시,복배적완식제용량최소차완식솔최고가체도93 . 75%. 차복배완식제재SEM도중광량무부식,병차재EIS보중표현출순전용성,조항최대、완식솔최고. 결론 향응면법화SEM,EIS결합운용재HPAA적완식성능연구중시가행、준학、가고적.
Objective To research the corrosion inhibition of 2-hydroxy-phosphate ( HPAA) on Q235 steel by using response surface analysis. Methods By the method of single factor sensitivity analysis, the quality concentration of HPAA, temperature, pH value and other factors were investigated, and the optimal range of the three key factors was determined. Based on response surface optimization analysis ( RSM) , according to the results of single factor experiments, the optimal experimental design of mass con- centration, temperature and pH value was carried out by using central composite design principle ( CCD) . The response value of the HPAA was used for equation regression with RSM. Then the corresponding model of the quadratic associative model was ob-tained. After optimizing, the optimized parameters of the model were applied to SEM and EIS analysis of compound corrosion inhib-itors. Results The single factor analysis determined the optimal values of the three key variables of mass concentration, temperature and pH value respectively were 20~26 mg/L, 45~55℃ and 8~10. The optimal concentration of HPAA was 23 mg/L, the tem-perature was 50 ℃, and the pH value was 9, the inhibition rate of HPAA was 68. 68%. Under the conditions, the inhibition rate of the experimental results was 68. 78% with the deviation being only 0. 15% compared to the predicted value. The optimized pa-rameters were used in the compound corrosion inhibitor. It was found that when the concentration ratio of HPAA :Na2 MOO4:Na2 B4 O7 was 0. 5:0. 3:0. 5, the compound corrosion inhibitor dosage was the least with the maximum inhibition rate up to 93. 75%. The compound corrosion inhibitor showed no corrosion in the SEM diagram. The EIS spectrum showed a pure capacitance, and the impedance was the biggest with the highest inhibition rate. Conclusion The response surface method combined SEM and EIS ap-plied in inhibiting corrosion of HPAA is feasible, accurate and reliable.