Corrosion Inhibitors最新文献

Corrosion Inhibitors Pub Date : 2019-08-07 DOI: 10.5772/intechopen.80542

Geethamani Palanisamy

引用次数: 6

Electrochemical Techniques for Corrosion and Tribocorrosion Monitoring: Fundamentals of Electrolytic Corrosion 电化学腐蚀和摩擦腐蚀监测技术:电解腐蚀基础

Corrosion Inhibitors Pub Date : 2019-07-09 DOI: 10.5772/INTECHOPEN.85392

A. Berradja

{"title":"Electrochemical Techniques for Corrosion and Tribocorrosion Monitoring: Fundamentals of Electrolytic Corrosion","authors":"A. Berradja","doi":"10.5772/INTECHOPEN.85392","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.85392","url":null,"abstract":"This first chapter aims at giving a brief framework for understanding the principles of electrochemistry in corrosion and tribocorrosion, enabling potential users and readers to quickly apprehend the electrochemical nature of corrosion. The subsequent chapter will provide additional details on the methods derived from these principles in a clear manner and ready-to-use format. In particular, the implementation of electrochemical techniques for the study of tribocorrosion allows, in situ and in real time, to monitor and control the corrosion conditions during wear and to quantify the corrosion kinetics. An introductory to some of the basic terms and concepts of electrochemistry and corrosion is first presented. Then, an overview of the thermodynamic and kinetic parameters of relevance to corrosion electrochemistry is highlighted. A description on how the electrical nature of corrosion reactions allows the interface to be modeled as an electrical circuit, as well as how this electrical circuit can be used to obtain information on corrosion rates. These prerequisites are necessary to better understand the surface reactivity of metals and other electronic conductive materials immersed in ionic electrolyte media whether or not subjected to mechanical stimuli.","PeriodicalId":309813,"journal":{"name":"Corrosion Inhibitors","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124859264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Electrochemical Techniques for Corrosion and Tribocorrosion Monitoring: Methods for the Assessment of Corrosion Rates 腐蚀和摩擦腐蚀监测的电化学技术:腐蚀速率评估方法

Corrosion Inhibitors Pub Date : 2019-07-02 DOI: 10.5772/INTECHOPEN.86743

A. Berradja

{"title":"Electrochemical Techniques for Corrosion and Tribocorrosion Monitoring: Methods for the Assessment of Corrosion Rates","authors":"A. Berradja","doi":"10.5772/INTECHOPEN.86743","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86743","url":null,"abstract":"The corrosion mechanism taking place in an aqueous phase with or without mechanical contact is electrochemical in nature. The electrochemical signal is one of the primary sources of information that relates to behavior in potential, current, and electrical charge of a corroding electrode. It arises from processes that cause corrosion and other electrochemical reactions. In a sliding contact in an ionic electrolyte medium, electrochemistry is more likely to interfere with the tribological behavior of tribocorrosion systems. In recent years, attempts by researchers have been made to control the material loss by electrochemical methods for various engineering systems. Applied online for monitoring in-situ uniform, localized, galvanic, or more forms of corrosion, such techniques are very convenient means to measure corrosion rate of materials. Such methods can also be used in different ways to evaluate their ability to protect materials (as inhibitors, protective layers, coatings). In this chapter, theoretical and experimental applications, fundamental aspects, limits of the electrochemical techniques for corrosion, and tribocorrosion monitoring are presented. Standards developed, so far, by various standardization organizations are reported. Fundamentals of traditional and advanced corrosion methods are described, focusing on their advantages, i.e. sensitivity to low corrosion rates, short experimental duration, and well-established theoretical understanding.","PeriodicalId":309813,"journal":{"name":"Corrosion Inhibitors","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116225077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Formation of Anticorrosive Structures and Thin Films on Metal Surfaces by Applying EDM 利用电火花加工技术在金属表面形成防腐结构和薄膜

Corrosion Inhibitors Pub Date : 2019-06-28 DOI: 10.5772/INTECHOPEN.80543

P. Topală, A. Ojegov, V. Beşliu

{"title":"Formation of Anticorrosive Structures and Thin Films on Metal Surfaces by Applying EDM","authors":"P. Topală, A. Ojegov, V. Beşliu","doi":"10.5772/INTECHOPEN.80543","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.80543","url":null,"abstract":"The methods of the formation of anticorrosive strata and thin films on metal surfaces by applying electric discharge machining (EDM) are presented in this chapter. The increase of anticorrosion resistance of metal surfaces by the formation of palladium depositions, carbon films and oxide and hydroxide films has been demonstrated. Corrosion and electrochemical behaviour of titanium with palladium powder coatings were investigated in sulfuric acid solutions at temperatures of 80 and 100°C. In order to increase the diffusion of palladium in the base material and to increase the layer homogeneity, after coating, the samples were annealed in vacuum at 1150°C for 1 hour. The proposed method allows to reduce the corrosion speed of titanium at least by two orders (from 18.7 to 0.3 g m (cid:1) 2 h (cid:1) 1 ); the corrosion potential is changed towards positive values (from (cid:1) 0.56 mV to +0.3 V). The research on surface electrical resistance and resistance to corrosion of oxide and hydroxide films formed on steel C45 surfaces by applying EDM have shown that the surface electrical resistance of the samples increased by 10 7 times, the potential of corrosion increased from (cid:1) 0.44 mV to +0.4 V and the resistance to corrosion has increased by about two times in 1% NaCl water solution and by about 10 times in 30% H 2 SO 4 water solution. The less pronounced increase of anticorrosion properties has carbon films formed on the same steel C45 surface; instead they increase superficial microhardness, the functional durability and processing productivity of the active piece surfaces.","PeriodicalId":309813,"journal":{"name":"Corrosion Inhibitors","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133537414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Structural Effect in Ionic Liquids Is the Vital Role to Enhance the Corrosion Protection of Metals in Acid Cleaning Process 在酸洗过程中，离子液体的结构效应对提高金属的防腐性能起着至关重要的作用

Corrosion Inhibitors Pub Date : 2019-06-05 DOI: 10.5772/INTECHOPEN.82422

P. Kannan, A. Varghese

{"title":"Structural Effect in Ionic Liquids Is the Vital Role to Enhance the Corrosion Protection of Metals in Acid Cleaning Process","authors":"P. Kannan, A. Varghese","doi":"10.5772/INTECHOPEN.82422","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.82422","url":null,"abstract":"Various kinds of methods have been developed and used to overcome different types of corrosion throughout the world. One possible and easy way to avert corrosion is use of an inhibitor. An inhibitor can be applicable to any type of metal irrespective of medium (acid, alkaline, and neutral). Still, several inhibitors are emerging day by day in the corrosion world and most of them are heterocyclic compounds. In this respect, ionic liquid is attracting the attention of the research community. Because of ionic liquid’s salient feature of melting and boiling points, it is being employed as a solvent in various types of reaction. In recent years, synthe-sizing and functionalizing the structure of ionic liquids in such a way to attain the desire requirement have become significant key factors in the field. By altering the cationic part or anionic part (halogen group), the chemical property of ionic liquids will change considerably. Besides, it will enhance the tendency of the electron-donating nature of the cationic part. This behavior equips them to be employed in the field of corrosion. While it meets the metal surface in the aggressive medium it will be attracted, leads to better surface protection from metal dissolution.","PeriodicalId":309813,"journal":{"name":"Corrosion Inhibitors","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121630913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Green Corrosion Inhibitory Potentials of Cassava Plant (Manihot esculenta Crantz) Extract Nanoparticles (CPENPs) in Coatings for Oil and Gas Pipeline 木薯植物(Manihot esculenta Crantz)提取物纳米颗粒(CPENPs)在油气管道涂料中的绿色缓蚀电位

Corrosion Inhibitors Pub Date : 2019-05-28 DOI: 10.5772/INTECHOPEN.79221

Funsho O. Kolawole, Shola K. Kolawole, Oluwamayowa M. Olugbemi, Suleiman B. Hassan

{"title":"Green Corrosion Inhibitory Potentials of Cassava Plant (Manihot esculenta Crantz) Extract Nanoparticles (CPENPs) in Coatings for Oil and Gas Pipeline","authors":"Funsho O. Kolawole, Shola K. Kolawole, Oluwamayowa M. Olugbemi, Suleiman B. Hassan","doi":"10.5772/INTECHOPEN.79221","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.79221","url":null,"abstract":"Internal and external corrosion affects oil and gas pipelines and were discussed in this chapter. Corrosion inhibitors are one of the methods that can be used to achieve corrosion control and prevention. The main discussion in this chapter was the use of cassava plant ( Manihot esculenta Crantz) extract nanoparticles (CPENPs) as an additive in coatings to serve as a green corrosion inhibitor for oil and gas pipeline. Trace elements, such as O, Si, Ca, K, Fe and S, which are hetero-atoms, have been identified in CPENPs. Elements like Si and Ca would also improve the strength of coatings as well as reduce corrosion rate of coated metals. It has also been revealed that CPENPs is composed of the following compounds SiO 2 , CaCO 3 , Ca 2 (SO 4 ) 2 H 2 O and CaC 2 O 4 (H 2 O), which would help in improving the mechanical properties of alloys, composites and coatings. SiO 2 if added to coatings will improve the coating hardness, while the presence of CaCO 3 in coatings will form a precipitate that will serve as a protective film on the surface of the metal, thereby protecting the metal from corrosion. The nature of bond and organic compounds that exist in the CPENPs was also discussed.","PeriodicalId":309813,"journal":{"name":"Corrosion Inhibitors","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122643861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Green Corrosion Inhibitors 绿色缓蚀剂

Corrosion Inhibitors Pub Date : 2019-04-30 DOI: 10.5772/INTECHOPEN.81376

L. K. Goni, M. Mazumder

引用次数: 13

Investigation of Corrosion Inhibitors Adsorption on Metals Using Density Functional Theory and Molecular Dynamics Simulation 用密度泛函理论和分子动力学模拟研究缓蚀剂对金属的吸附

Corrosion Inhibitors Pub Date : 2019-03-08 DOI: 10.5772/INTECHOPEN.84126

Ambrish Singh, Kashif R. Ansari, Mumtaz A. Quraishi, Yuanhua Lin

引用次数: 14

Exploring Musa paradisiaca Peel Extract as a Green Corrosion Inhibitor for Mild Steel Using Factorial Design Method 用析因设计法探索天麻皮提取物作为绿色缓蚀剂的研究

Corrosion Inhibitors Pub Date : 2019-02-12 DOI: 10.5772/INTECHOPEN.82617

O. S. Amodu, M. Odunlami, J. T. Akintola, S. K. Ntwampe, S. Akoro

{"title":"Exploring Musa paradisiaca Peel Extract as a Green Corrosion Inhibitor for Mild Steel Using Factorial Design Method","authors":"O. S. Amodu, M. Odunlami, J. T. Akintola, S. K. Ntwampe, S. Akoro","doi":"10.5772/INTECHOPEN.82617","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.82617","url":null,"abstract":"The suitability of Musa paradisiaca (banana) peel extract as a green corrosion inhibitor for mild steel in acidic medium (1 M HCl) was investigated using factorial method of the design of experiment. The effects of two independent variables (concentration of banana peel extract and temperature) on the corrosion inhibition efficiency were investigated. The physicochemical properties of the extract such as surface tension, viscosity, flash point, and specific gravity were determined using standardized methods provided by the American System of Testing Materials (D-971). The relationship between the independent variables and the inhibitor efficiency was modeled by gasometric and thermometric methods. The statistical analysis of the inhibition efficiency was carried out using the “Fit Regression Model” of Minitab ® 17.0, while the fitness of the models was assessed by the coefficient of determination (R 2 ) and the analysis of variance (ANOVA). From the results obtained, gasometric method achieved a maximum inhibition efficiency of 66.83%, with an R 2 of 90.76%, whereas thermometric method gave a maximum inhibition efficiency of 65.70%, with an R 2 of 95.56%. This study shows that banana peel extract has the capacity to prevent the corrosion of mild steel in acidic medium.","PeriodicalId":309813,"journal":{"name":"Corrosion Inhibitors","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121027251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6