Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles: DFG German National Licenses  (6)
  • Polymer and Materials Science  (6)
Source
  • Articles: DFG German National Licenses  (6)
Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Corrosion Inhibition of iron in 2M hydrochloric acid solution (1995)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 26 (1995), S. 357-361 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effect of some hydrazone oxime derivatives on the corrosion of iron in 2M HCl have been studied by polarization and weight-loss techniques. It was found that the compounds under consideration are adsorbed on the iron surface according toe the Temkin isotherm. The Tafel slope is approximately constant independent of the concentration of the inhibitor. The results of polarization indicate that all compounds tested were of a mixed type, but the cathodic is more preferenially polarized.The inhibition efficiency was found to follow the order:I〉III〉IV〉VI〉II.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19950260707
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Electrochemical production of Palladium and its use as indicator electrode (1995)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 26 (1995), S. 488-492 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The electrodeposition of palladium from electrolytes containing palladium chloride along with potassium-dihydrogen phosphate, sodium fluoride or oxalic acid was studied under a variety of condition. The conditions used were: 1.0 M palladium chloride, 0.15 M potassium dihydrogen phosphate, pH 1.5 at 298 K and current density 0.85 mA cm-2/ The current efficiency was calculated and the crystal structure confirmed by X-ray analysis. Spectrophotomteric and chemical analysis reveals that the purity of the metal is better than 99%. Palladium electrode can function satisfactorily as indicator electrode for hydrogen ions in acid-base titrations. Titration of acids with sodium hydroxide and of salts of weak acids with hydrochloric acid showed that palladium can indicate very accurately the end point. The end point coincide to great extent with the visual values with an error not more than ± 2%.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19950260906
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Inhibitory Effect of some carbazides on corrosion of aluminium in hydrochloric acid and sodium hydroxide solutions (1995)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 26 (1995), S. 342-346 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The dissolution of aluminium in hydrochloric acid and sodium hydroxide solutions in the presence of semicarbazide, thiosemicarbazide and sym.diphenylcarbazide as corrosion inhibitors has been studied using thermometric, weight-loss and polarization methods. The three methods gave consistent results. The higher inhibition efficiency of these compounds in acidic than in alkaline madia may be due to the less negative potential of aluminium in hydrochloric acid solution, favouring adsorption of the additive. The adsorption of these compounds were found to obey Frumkin adsorption isotherm.Cathodic polarization measurements showed that these compounds are cathodic inhibitors and their adsorption in the double layer does not change the mechanism of the hydrogen evolution reaction. The results are analysed in terms of both molecular and cationic adsorption.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19950260612
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Corrosion inhibition of iron by 1-benzylidene-4- Phenylthiosemicarbazone derivatives in acid solution (1997)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 28 (1997), S. 439-443 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The inhibition action of 1-benzylidene-4-phenylthiosemicarbazone derivatives on the corrosion behaviour of iron in 1M H2SO4 was investigated using potentiostatic and potentiodynamic techniques. Results showed that these derivatives act as mixed-type inhibitors, but the cathode is more preferentially polarized. All the inhibitors follow the Frumkin adsorption. The results of the potentiodynamic indicate that the adsorption process depends on both adsorption potential (Eads) and adsorption time (tads). THe results obtained were analysed and discussed on the basis of competitive adsorption.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19970280909
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Inhibition of copper corrosion in 1M nitric acid with benzoyl benzaldehyde hydrazone derivatives (1995)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 46 (1995), S. 468-472 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Inhibition der Kupferkorrosion in 1M Salpetersäure mit BenzoylbenzaldehydhydrazinderivatenDie Wirkung von Benzoylbenzaldehydhydrazinderivaten auf die Inhibierung der Kupferkorrosion in IM Salpetersäure-Lösungen bei 303 K wurde mit Hilfe potentiodynamischer und Massenverlustmessungen untersucht. Bei Zugabe der verwendeten Substanzen ergab sich eine deutliche Abnahme der Korrosionsgeschwindigkeit des Kupfers. Die Korrosionsgeschwindigkeit hängt dabei von der Beschaffenheit und der Konzentration des Inhibitors ab. Die Neigung der Tafelgeraden ist unabhängig von der Konzentration des Inhibitors annähernd konstant. Die ermittelten Korrosionsdaten deuten an, daß die Inhibierung der Kupferkorrosion auf die Oberflächenadsorption der Inhibitormoleküle zurückgeführt werden kann, die der Langmuir-Adsorptions-Isotherme folgen. Die Ergebnisse der potentiodynamischen Messungen lassen darauf schließen, daß alle untersuchten Substanzen im wesentlichen kathodisch wirken.
    Notes: The effect of substituted benzoyl benzaldehyde hydrazone derivatives on the inhibition of copper corrosion in IM nitric acid solution at 303 K was investigated by potentiodynamic and weight-loss measurements. A significant decrease in the corrosion rate of copper was observed in the presence of the investigated compounds. The corrosion rate was found to depend on the nature and the concentration of the inhibitors. The Tafel slope is approximately constant independent of the concentration of the inhibitor. The observed corrosion data indicate that the inhibition of copper corrosion is due to surface adsorption of inhibitor molecules which follow the Langmuir adsorption isotherm. The results of potentiodynamic measurements indicate that all investigated compounds act mainly cathodically.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19950460804
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Substituted phenols as corrosion inhibitors for copper in nitric acid (1988)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 39 (1988), S. 23-26 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Substituierte Phenole als Inhibitoren der Korrosion von Kupfer in SalpetersäureDie Auflösung von Kupfer in Salpetersäure in Gegenwart von Resorcin, o- und p-Aminophenolen, Brenzkatechin, o-Kresol und Salicylaldehyd als Korrosionsinhibitor wurde gravimetrisch und mittels galvanostatischer Polarisation untersucht. Beide Methoden ergaben für die genannten Verbindungen übereinstimmende Ergebnisse. Aufgrund der Polarisationsdaten ist zu vermuten, daß diese Inhibitoren unter Einwirkung eines äußeren Stroms die Kathode bevorzugt polarisieren. Die Wirkung dieser Inhibitoren dürfte auf Adsorption entsprechend einer Langmuir-Isotherme beruhen. Die Wirkung besteht darin, daß die entstehende salpetrige Säure zersetzt und ihr Einfluß auf die kathodische Reaktion ausgeschaltet wird.
    Notes: The dissolution of copper in nitric acid solution in the presence of resorcinol, o, p-aminophenols, catechol, o-cresol and salicylaldehyde as corrosion inhibitors has been studied by galvanostatic polarization and weight loss methods. For these compounds the two methods gave consistent results.Polarization data suggest that in the case of these inhibitors the cathode is preferentially polarized under the influence of an external current. The inhibitors appear to function through general adsorption following the Langmuir adsorption isotherm. The inhibiting effect of tested compounds is due to the destruction of the HNO2 formed and its interference with the cathodic reaction.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19880390105
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...