Corrosion Prevention and Protection: Practical Solutions

I came across a book, Corrosion Prevention and Protection: Practical Solutions by V. S. Sastri, Edward Ghali and Mimoun Elboujdaini. At first I was just browsing the table of contents for some interesting topics that I may look upon then before I knew it I was already reading the book from cover to cover. The content was good. It

started with the definition and a little background about corrosion. The history of the emergence of the corrosion studies was also noted and some papers with significant and relevant information were

discussed.

For starters, a little bit of background about materials science and engineering will be of great help in understanding the book. Like the Pourbaix Diagram it will be difficult to understand the relevance of this concept in studying corrosion if you have no background at all.

Corrosion Prevention and Protection: Practical Solutions presents a functional approach to the various forms of corrosion, such as uniform corrosion, pitting corrosion, crevice corrosion, galvanic corrosion, stress corrosion, hydrogen-induced damage, sulphide stress cracking, erosion-corrosion, and corrosion fatigue in various industrial environments.

The book is split into two parts. The first, consisting of five chapters:

• Introduction and Principles (Fundamentals) of Corrosion
• Corrosion Testing, Detection, Monitoring and Failure Analysis
• Regulations, Specifications and Safety
• Materials: Metals, Alloys, Steels and Plastics
• Corrosion Economics and Corrosion Management

The second part of the book consists of two chapters which present:

• a discussion of corrosion reactions, media, active and active-passive corrosion behavior and the various forms of corrosion,
• a collection of case histories and practical solutions which span a wide range of industrial problems in a variety of frequently encountered environments, including statues & monuments, corrosion problems in metallurgical and mineral processing plants, boilers, heat exchangers and cooling towersm aluminum and copper alloys, galvanized steel structures as well as hydrogeological environment corrosion.

This text is relevant to researchers and practitioners, engineers and chemists, working in corrosion industry, government laboratories and academia. It is also suitable as a course text for engineering students as well as libraries related to chemical and chemical engineering institutes and research departments.

About the Authors (2007)

Edward Ghali, DSc, Dept. of Mining and Metallurgy, Laval University, Quebec City, Canada G1K 7P4

V. S. Sastri, Ph.D, Sai Ram Consultants, Ottawa, Ontario, Canada, K1J 6S7
Consulting in the fields of corrosion and corrosion control by inhibitors in sour gas systems, grinding balls, microbiological corrosion, corrosion of low-leaded copper-base alloys, hydrogen damage in high-strength and rail steels, galvanic corrosion of household plumbing solders and contamination of drinking water, surface quantification of corrosion products, electrochemical sensors for hydrogen in steels, reverse osmosis and water pollution and beneficiation of ores.

M. Elboujdaini, Ph.D., Materials Technology Laboratories, CANMET, Ottawa, Ontario, Canada, K1A 0G1
Research Scientist and Group Leader/Corrosion & Protection at Natural Resources Canada, CANMET, Materials Technology Laboratory (MTL), Ottawa, Canada.
Authority in hydrogen-induced cracking and material degradation in H2S environment; Coordinated complex and difficult tests on full-scale pipes in H2S environment for oil and gas industries; Provided critical technical information and consultative expertise to Canadian companies.

References:

1) Google Books
2) Sastri, V. S., Ghali, E., & Elboujdaini, M. (2007). Corrosion Prevention and Protection Practical Solutions. Chichester, West Sussex: John Wiley & Sons Ltd. 

Corrosion Based Design Analysis

Corrosion-based design analysis (CBDA)

This approach predicts the performance and assures the reliability of equipment or structure in question. The aim of CBDA is to assure the reliable operation of the  chosen components in the intended application and for the intended life. The main steps involved in CBD analysis amount to the following ten steps:

(i)  The environment in which the material selected can perform reliably. The environment considered is chemical  as well as the thermal conditions and the operating stresses.

(ii) Material is defined to include not only the type of alloy or metal, but also the impurities in grain boundaries, second phases, cold work, etc.

(iii) The 'mode' of corrosion is defined to include the morphology of degradation (corrosion) and its dependence on factors such as potential, pH, temperature, chemical species, alloy composition and stress.

(iv) Superposition involves comparison for the chosen material, various possible modes of degradation and their dependence on the anticipated environmental conditions. If the chosen materials undergo degradation, change in conditions of overlap or change in design or material or modification of environment by the addition of inhibitors is warranted.

(v) Failure is a relative factor and in general means not meeting with the expected requirements. Since the term is relative it is imperative to define the requirements to be met at the design stage.

(vi) Development of a statistical framework of the corrosion modes and the extent of degradation.

(vii) Accelerated testing with the prototype equipment under the expected conditions must be done.

(vii) Based on the foregoing steps the prediction may be made on the performance of thechosen design and material and whether failure can occur.

(ix) The analysis also recommends corrosion monitoring, inspection and feedback of the results.

(x)  Finally, depending upon the data accrued, modification in design, materials selection, operations, monitoring or inspection may be implemented as a result of comparison of operational data with the predictions.

Reference:

Sastri, V. S., Ghali, E., & Elboujdaini, M. (2007). Corrosion Prevention and Protection Practical Solutions. Chichester, West Sussex: John Wiley & Sons Ltd.