rajendran susai (70 Ergebnisse)

Taschenbuch. Zustand: Neu. Hydrophobie und Korrosionsinhibierung | Korrosionshemmung von Kohlenstoffstahl durch Tenside | Susai Rajendran (u. a.) | Taschenbuch | Großformatiges Paperback. Klappenbroschur | Deutsch | Verlag Unser Wissen | EAN 9786206901563 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware -The inhibition efficiency of six inhibitors namely Cetyl trimethyl ammonium bromide, Sodium dodecyl sulphate, Tween 80, Tween 60, Tween 20 and Triton X 100 in controlling corrosion of carbon steel in well water has been evaluated by weight loss method. The formulation consisting of 200 ppm of surfactants and 50 ppm of Zn2+ gives 96%, 92%, 90%, 88%, 85%, 84% inhibition efficiencies respectively. A synergistic effect exists between surfactants and Zn2+. Polarization study reveals that surfactant-Zn2+ system functions as a mixed kind of inhibitor. Mechanistic aspects have been studied by Polarization and AC-impedance spectra. AC impedance spectra reveal that a protective film is formed on the metal surface. FTIR spectra reveal that the protective film consists of Fe2+-surfactant complex and Zn(OH)2. The formation of mono layer and hydrophobic nature were confirmed by AFM, FTIR and contact angle measurements. As the value of contact angle increases, hydrophobicity increases and hence corrosion resistance increases. The self assembling nanolayers of the surfactants offer better corrosion inhibition efficiencies.Books on Demand GmbH, Überseering 33, 22297 Hamburg 68 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -Corrosion Inhibition efficiencies of amino acids such as L-Tyrosine,L-Cysteine, L-Lysine, L-Valine and L-Serine in well water have been calculated by weight loss method. The mechanistic aspects have been studied by Polarization study, AC impedance spectra FTIR, UV and Fluorescence Spectra, AFM, SEM and EDAX. By using Density Functional Theory (DFT) various quantum chemical parameters such as EHOMO, ELUMO, energy gap, electron affinity, Ionization potential, absolute electro negativity have been calculated. The theoretical results were found to be consistent with the experimental data generated. It is observed that L-Tyrosine (250 ppm) + Zn2+(50 ppm) system has good inhibition efficiency. The reason for the high Inhibition Efficiency of L-Tyrosine is due to the presence of aromatic ring (electrons) in the system. L-Tyrosine (250ppm) + Zn2+ (50ppm) system has high LPR value than other amino acid inhibitor systems. This system has higher has higher charge transfer resistance value and lower double layer capacitance value than other systems. The protective film has been analyzed by FTIR, UV and Fluorescence Spectra, AFM, SEM and EDAX. The protective film is in nanometer scale.Books on Demand GmbH, Überseering 33, 22297 Hamburg 64 pp. Englisch.

Zustand: New.

Zustand: New.

Zustand: New.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware -L'efficacia dell'inibizione di sei inibitori, ossia il bromuro di cetil-metil-ammonio, il dodecilsolfato di sodio, il Tween 80, il Tween 60, il Tween 20 e il Triton X 100, nel controllare la corrosione dell'acciaio al carbonio in acqua di pozzo è stata valutata con il metodo della perdita di peso. La formulazione composta da 200 ppm di tensioattivi e 50 ppm di Zn2+ fornisce rispettivamente il 96%, 92%, 90%, 88%, 85%, 84% di efficienza di inibizione. Esiste un effetto sinergico tra tensioattivi e Zn2+. Lo studio di polarizzazione rivela che il sistema tensioattivo-Zn2+ funziona come un inibitore misto. Gli aspetti meccanici sono stati studiati mediante spettri di polarizzazione e impedenza AC. Gli spettri di impedenza AC rivelano la formazione di un film protettivo sulla superficie del metallo. Gli spettri FTIR rivelano che il film protettivo è costituito da un complesso Fe2+-surfattante e da Zn(OH)2. La formazione del monostrato e la natura idrofobica sono state confermate dalle misure AFM, FTIR e dall'angolo di contatto. All'aumentare del valore dell'angolo di contatto, aumenta l'idrofobicità e quindi la resistenza alla corrosione. I nanostrati autoassemblanti dei tensioattivi offrono una migliore efficienza di inibizione della corrosione.Books on Demand GmbH, Überseering 33, 22297 Hamburg 64 pp. Italienisch.

Taschenbuch. Zustand: Neu. Neuware -La eficacia inhibidora de seis inhibidores, a saber, bromuro de cetil trimetil amonio, dodecil sulfato sódico, Tween 80, Tween 60, Tween 20 y Triton X 100, para controlar la corrosión del acero al carbono en agua de pozo se ha evaluado mediante el método de pérdida de peso. La formulación consistente en 200 ppm de tensioactivos y 50 ppm de Zn2+ proporciona eficacias de inhibición del 96%, 92%, 90%, 88%, 85% y 84% respectivamente. Existe un efecto sinérgico entre los tensioactivos y el Zn2+. El estudio de polarización revela que el sistema surfactante-Zn2+ funciona como un tipo mixto de inhibidor. Los aspectos mecanísticos se han estudiado mediante espectros de polarización y de impedancia de CA. Los espectros de impedancia de CA revelan que se forma una película protectora sobre la superficie metálica. Los espectros FTIR revelan que la película protectora está formada por complejo Fe2+-surfactante y Zn(OH)2. La formación de la monocapa y la naturaleza hidrofóbica se confirmaron mediante AFM, FTIR y mediciones del ángulo de contacto. A medida que aumenta el valor del ángulo de contacto, aumenta la hidrofobicidad y, por tanto, la resistencia a la corrosión. Las nanocapas autoensambladas de los tensioactivos ofrecen una mayor eficacia de inhibición de la corrosión.Books on Demand GmbH, Überseering 33, 22297 Hamburg 64 pp. Spanisch.

Taschenbuch. Zustand: Neu. Neuware -A eficácia da inibição de seis inibidores, nomeadamente brometo de cetil trimetil amónio, dodecil sulfato de sódio, Tween 80, Tween 60, Tween 20 e Triton X 100, no controlo da corrosão do aço-carbono em água de poço foi avaliada pelo método de perda de peso. A formulação que consiste em 200 ppm de tensioactivos e 50 ppm de Zn2+ dá 96%, 92%, 90%, 88%, 85%, 84% de eficácia de inibição, respetivamente. Existe um efeito sinérgico entre os tensioactivos e o Zn2+. O estudo de polarização revela que o sistema tensioativo-Zn2+ funciona como um tipo misto de inibidor. Os aspectos mecânicos foram estudados por espectros de polarização e de impedância AC. Os espectros de impedância AC revelam que se forma uma película protetora na superfície do metal. Os espectros FTIR revelam que a película protetora é constituída por um complexo Fe2+-surfactante e Zn(OH)2. A formação de uma monocamada e a natureza hidrofóbica foram confirmadas por AFM, FTIR e medições do ângulo de contacto. À medida que o valor do ângulo de contacto aumenta, a hidrofobicidade aumenta e, consequentemente, a resistência à corrosão aumenta. As nanolâminas de auto-montagem dos tensioactivos oferecem melhores eficiências de inibição da corrosão.Books on Demand GmbH, Überseering 33, 22297 Hamburg 64 pp. Portugiesisch.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware -Korrosion ist ein natürlich vorkommendes Phänomen. Um das Korrosionsverhalten von Bewehrungsstahl in Beton (simulierte Betonporenlösung - SCPS) zu begrenzen, ist der Einsatz von Inhibitoren eine wichtige Methode. In der vorliegenden Studie wurden die folgenden Oxyanionen als Korrosionsinhibitoren untersucht: Kaliumpermanganat (PP), Natriummolybdat (SM), Trinatriumphosphat (TSP), Natriumkaliumtartrat (SPT), Kaliumdichromat (PDC) und Trinatriumcitrat (TSC). Sie wirken als gute Korrosionsinhibitoren. Die mechanistischen Aspekte der Korrosionsinhibition basieren auf den Ergebnissen der Gewichtsverlustmethode, der Polarisationsstudie, der AC-Impedanzspektromessungen, der UV-Absorptionsspektroskopie im sichtbaren Bereich, der Fluoreszenzspektroskopie, der Oberflächenuntersuchungstechniken wie der FT-IR-Spektroskopie, der zyklischen Voltammetrie, der Rasterelektronenspektroskopie (SEM) und der energiedispersiven Analyse von Röntgenstrahlen (EDAX) sowie der Rasterkraftmikroskopie (AFM). Die Ergebnisse der Gewichtsverluststudie zeigen, dass die Formulierung, die aus 250 ppm Inhibitor und 50 ppm Zn2+ besteht, einen höheren Prozentsatz an Korrosionshemmungseffizienz (IE) bei der Kontrolle der Korrosion von Bewehrungsstahl aufweist, der in SCPS eingetaucht ist, das in Brunnenwasser hergestellt wurde.Books on Demand GmbH, Überseering 33, 22297 Hamburg 136 pp. Deutsch.

Taschenbuch. Zustand: Neu. Korrosionsbeständigkeit von Bewehrungsstahl in simulierter Betonporenlösung | Oxyanionen als Korrosionsschutzmittel für Beton | Susai Rajendran | Taschenbuch | Paperback | 136 S. | Deutsch | 2022 | Verlag Unser Wissen | EAN 9786205388655 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.

Zustand: New.

Zustand: New.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware -This book is very useful to Students and Professors working in the field of Corrosion Inhibition studies. It explains the basic principles of corrosion and its control. Various methods employed in corrosion inhibition studies are explained with suitable examples. The applications of weight loss method, F-test, uv-visible absorption spectroscopy, fluorescence spectroscopy, FTIR, SEM, EDAX and AFM are illustrated in this book, authored by experienced authors. This book may be considered as a reference book for Researcher Scholars to prepare for their Course Work at MSc, MPhil and PhD levels of Universities throughout the world.Books on Demand GmbH, Überseering 33, 22297 Hamburg 124 pp. Englisch.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware -India is a holy land of peace, serenity, love, knowledge and inspiration. The Indians are world citizens. Their relatives live throughout the world. They work for the poor and less fortunate. They are religious minded. They live as one family even though they have diverged culture and heritage. They feel that music has healing power and it will smooth body, mind and soul. This book gives the life history of Indian Nobel Laureates. They have achieved greatness after their dedicated hard work in a particular field. The study of this book by the young students will make them great in the future. This will motivate them to concentrate on their studies. The life history of Sir C.V.Raman, Mother Teresa, J.C.Bose, Hargobind Khorana, Rabindranath Tagore, Amartya Sen, Subramanyan Chandrasekhar and Kailash Satyarthi are briefly explained.Books on Demand GmbH, Überseering 33, 22297 Hamburg 180 pp. Englisch.

Paperback. Zustand: Brand New. 68 pages. 8.66x5.91x0.16 inches. In Stock.

Paperback. Zustand: Brand New. 64 pages. 8.66x5.91x0.15 inches. In Stock.

Taschenbuch. Zustand: Neu. Neuware -The present work deals with the studies on the corrosion Inhibitive action of inhibitor formulations containing organic and inorganic chemicals present in the materials used in our day to day life to inhibit corrosion. The inhibitors chosen for the present study are ethylene diamine tetra acetic acid (EDTA), 1-hydroxyethane-1,1-phosphonic acid (HEDP), Sodium phosphate (Na3PO4), Sodiumdodecyl sulphate(SDS), Phenylphosphonic acid (PhPA), Sodium sulphite (Na2SO3), Sodium nitrite (NaNO2), with Zinc sulphate.The biocides selected for the present work is N-Cetyl-N,N,N-trimethyl ammonium bromide (CTAB).The medium chosen for the study is double distilled water. The methods used for the study includes weight-loss methods, polarization studies, AC impedance, FTIR,UV absorption and fluorescence spectra. On the basis of results obtained from weight loss method, other studies are carried out. The problem due to micro organisms was studied by the use of biocide (CTAB). The experimental result show that all the seven inhibitors chosen exhibit synergism with Zn2+ ions for the corrosion inhibition of carbon steel in double distilled water is in the order, HEDP = Na3PO4> PhPA > SDS> NaNO2 > Na2SOBooks on Demand GmbH, Überseering 33, 22297 Hamburg 316 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -La corrosion est un phénomène qui se produit naturellement. Pour limiter le comportement de corrosion de l'acier d'armature dans le béton (solution de pore de béton simulé -SCPS), l'utilisation d'inhibiteurs est une méthode importante. Dans la présente étude, les oxyanions suivants ont été étudiés comme inhibiteurs de corrosion : Permanganate de potassium (PP), molybdate de sodium (SM), phosphate trisodique (TSP), tartrate de sodium et de potassium (SPT), dichromate de potassium (PDC) et citrate trisodique (TSC). Les aspects mécanistes de l'inhibition de la corrosion sont basés sur les résultats obtenus par la méthode de perte de poids, l'étude de polarisation, les mesures du spectre d'impédance AC, la spectroscopie d'absorption UV visible, la spectroscopie de fluorescence, les techniques d'examen de surface comme la spectroscopie FT-IR, la voltampérométrie cyclique, la spectroscopie électronique à balayage (SEM), l'analyse dispersive en énergie des rayons X (EDAX) et la microscopie à force atomique (AFM). Les résultats de l'étude de perte de poids montrent que la formulation consistant en 250 ppm d'inhibiteur et 50 ppm de Zn2+ a un plus grand pourcentage d'efficacité d'inhibition de la corrosion (IE), dans le contrôle de la corrosion de l'acier d'armature immergé dans le SCPS préparé dans l'eau de puits.Books on Demand GmbH, Überseering 33, 22297 Hamburg 136 pp. Französisch.

Zustand: New.

Zustand: New.

Zustand: New.

Taschenbuch. Zustand: Neu. Neuware -Water is a unique molecule with basic properties that make it ideal for cooling water applications. For example, it is safe, easy to handle, widely available, and inexpensive in most industrialized regions of the world. Water is a more efficient heat transfer medium than many other materials, especially compared to air. Water cooling is a method of heat removal from components and industrial equipment. As opposed to air cooling, water is used as the heat conductor. Water cooling is commonly used for cooling automobile internal combustion engines and large industrial facilities such as steam electric power plants, petroleum refineries, hydroelectric generators and chemical plants. Other uses include cooling of lubricant oil in pumps, cooling the barrels of machine guns; for cooling purposes in heat exchangers; and recently, cooling of various major components inside high-end personal computers. Recent trends in cooling water systems and modern approach in use of corrosion inhibitors for cooling water systems are presented. This book is useful to those working on corrosion inhibitors, mainly to those working on corrosion inhibitors for cooling water systems.Books on Demand GmbH, Überseering 33, 22297 Hamburg 236 pp. Englisch.

Taschenbuch. Zustand: Neu. Neuware -The present study deals with the corrosion behaviour of mild steel immersed in simulated concrete pore solution (SCPS) prepared in DD water in the presence of inhibitors such as Tri Sodium Citrate, Potassium Sodium Tartrate, N-Cetyl N,N,N-Trimethylammonium Bromide, Sodium Dodecyl Sulphate in the presence of Cl- ion. The corrosion resistance has been investigated by electrochemical and non-electrochemical methods. The order of IE of the inhibitors is as follows: TSC>SPT>CTAB>SDS. In order to investigate the nature of the protective film, UV-Visible Absorption Spectroscopy, Infrared Spectroscopy, Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and Fourier Transform-Infrared Spectroscopy (FTIR) has been used in the present study. The mechanistic aspects of corrosion inhibition are based on the classical weight loss method, the polarization study and different surface examination techniques.Books on Demand GmbH, Überseering 33, 22297 Hamburg 164 pp. Englisch.

Paperback. Zustand: Fine.