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organic inhibitors

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003699
EISBN: 978-1-62708-182-5
... Abstract The inhibitors currently in use are generally complex mixtures of reaction products and have been formulated to meet the demands of a very competitive industry. This article discusses these demands on inhibitor formulation. The varying characteristics and number of organic inhibitors...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003698
EISBN: 978-1-62708-182-5
... ) is that inhibitors are designated as passivators, organic inhibitors, and vapor-phase inhibitors. Passivating Inhibitors Passivating inhibitors are usually inorganic oxidizing chemicals such as chromates, nitrites, and molybdates that passivate the metal and shift the corrosion potential several tenths...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003105
EISBN: 978-1-62708-199-3
..., such as temporary protection, cleaning, hot dip coating, electroplating, thermal spray coatings, conversion coatings, thin organic coatings, and inhibitors. alloy steels atmospheric corrosion carbon steel corrosion in concrete corrosion in water corrosion inhibitors corrosive environments galvanic...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003672
EISBN: 978-1-62708-182-5
..., and metallic. Organic coatings afford protection by providing a physical barrier between the metal and the environment. These coatings can also contain corrosion inhibitors. Organic coatings include paints, resins, lacquers, and varnishes. The properties of the coating depend on the formulation...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003700
EISBN: 978-1-62708-182-5
... Abstract This article provides useful information on the occurrence of corrosion in crude oil refinery units, namely, crude unit, catalytic and thermal cracking units, hydroprocessing units, amine sweetening units, and sour water units. Types and applications of corrosion inhibitors, namely...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003605
EISBN: 978-1-62708-182-5
... ions or molecules. The actual concentration needed for a given system must be determined experimentally. Similarly, many organic inhibitors cause a drastic decrease in corrosion rate at very low concentrations, especially for iron in acidic solutions, with no benefit observed on increasing...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004143
EISBN: 978-1-62708-184-9
... proposals on a realistic basis. Chemical cleaning solutions include mineral acids, organic acids, bases, complexing agents, oxidizing agents, reducing agents, and organic solvents. Inhibitors and surfactants are added to reduce corrosion and to improve cleaning efficiency. Following the cleaning cycle...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001227
EISBN: 978-1-62708-170-2
... but can vary widely in uniformity and effectiveness and may contain toxic or carcinogenic substances. For these reasons, synthetic inhibitors now dominate the market. Synthetic inhibitors are usually complex organic compounds. One of the most common inhibitors for hydrochloric-acid-based cleaners...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004164
EISBN: 978-1-62708-184-9
... of using borate and silicate in engine coolants in Asia, the direction of coolant technology started to shift to a coolant that did not contain any phosphate, silicate, or borate. Organic acid-based inhibitor technologies filled this niche nicely. In 1995 General Motors was the first U.S. manufacturer...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006405
EISBN: 978-1-62708-192-4
... from a chemical reaction between the inhibitor and the metal surface. Long-chain organic molecules, such as alkanolamines and saturated and unsaturated fatty acid amides, are examples of physical adsorbers. Phosphoric acid, dithiophosphoric acid, and succinic acid derivatives are examples...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003701
EISBN: 978-1-62708-182-5
... processes which occur in water-recirculating systems and the effect of dissolved gases, temperature, pH, suspended solids, dissolved salts, and scale deposition on corrosivity of water, are also reviewed. The article also considers anodic and cathodic inhibitors and the control of corrosion in municipal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... amounts to a corrosive, reduces its corrosivity. Corrosion inhibitors function by interfering with either the anodic or cathodic reactions, or both. Many of these inhibitors are organic compounds; they function by forming an impervious film on the metal surface or by interfering with either the anodic...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004210
EISBN: 978-1-62708-184-9
... proper material selection, protective coatings, cathodic protection systems, use of inhibitors, use of nonmetallic materials, and control of the environment. The article reviews the aspects of corrosion that tend to be unique to corrosion as encountered in applications involving oil and gas exploration...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003710
EISBN: 978-1-62708-182-5
... that are expected to be primarily inorganic in nature, EDS, AES, XPS, ISS, SIMS and EXAFS generally are suitable techniques. However, for corrosion inhibitor films that are primarily organic in nature, Fourier transform infrared (FTIR) spectroscopy, Raman or surface enhanced Raman spectroscopy (SERS), SIMS, ISS...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004125
EISBN: 978-1-62708-184-9
.... Pretreatments provide some corrosion protection and prepare the surface for subsequent organic coatings. Primers normally contain high concentrations of corrosion inhibitors such as chromates and are designed to provide superior adhesion. Polyurethane topcoats enhance protection and durability while providing...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004102
EISBN: 978-1-62708-184-9
... for controlling corrosion in service water systems consist of the addition of corrosion inhibitors to control general corrosion and the addition of biocides to control microbiological growth and prevent MIC. Some power plants utilize corrosion inhibitors. The decision to use corrosion inhibitors is based...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004101
EISBN: 978-1-62708-184-9
... epoxy liners can deteriorate and leach organic compounds into water, causing taste and odor complaints. The second method is to add chemical inhibitors to alter water chemistry to mitigate against corrosion. See the article “Corrosion Inhibitors in the Water Treatment Industry” in Volume 13A, ASM...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006411
EISBN: 978-1-62708-192-4
... to promote these types of surface damage. Air is entrained in the oil and fuel, and water and organic acids form during the combustion and decomposition processes. Rust and corrosion inhibitors provide a barrier between the metal surface and these harmful elements. Two types of inhibitors are those...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
.... A corrosion inhibitor is a substance that, when added in small amounts to a corrosive, reduces its corrosivity. Corrosion inhibitors function by interfering with either the anodic or cathodic reactions, or both. Many of these inhibitors are organic compounds; they function by forming an impervious film...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004108
EISBN: 978-1-62708-184-9
... Abstract Organic coatings are the principal means of corrosion control for the hulls and topsides of ships and for the splash zones on permanent offshore structures. This article describes surface preparation which is the most important consideration in determining the performance of organic...