scholarly journals Corrosion characteristic of Cu-10Ni-Fex in 3.5 % NaCl

2018 ◽  
pp. 11526-11538
Author(s):  
Rongwei Zhang ◽  
Keyword(s):  
Corrosion Characteristic

scholarly journals Investigation of Corrosion Characteristic of Al6063 Reinforced with Al2O3-CBA by Using Stir Casting

2021 ◽  
Vol 1059 (1) ◽  
pp. 012018
Author(s):  
T Nithyanandhan ◽  
P Sivaraman ◽  
M K Prabhu ◽  
C Nedumaran ◽  
J Narendran ◽  
...  
Keyword(s):  
Stir Casting ◽  
Corrosion Characteristic

Failure Analysis of Hydrogen Corrosion of the Lens Gasket

2010 ◽  
Vol 37-38 ◽  
pp. 462-465
Author(s):  
Xiao Chun Ma ◽  
Guang Fei Xu
Keyword(s):  
High Pressure ◽  
Failure Analysis ◽  
Intergranular Crack ◽  
Optical Microscope ◽  
Corrosion Characteristic ◽  
Hydrogen Corrosion ◽  
Corrosion Depth ◽  
Fertilizer Plant ◽  
Inner Surface ◽  
Hydrogen Blister

The 10MoWVNb steel lens gaskets are widely used for the flange linking of high pressure tube in the synthetic ammonia system in chemical fertilizer plant. The gasket worked in H2-N2-NH3 environment at the temperature of 300°C. It often fails because of hydrogen corrosion. The microstructure and corrosion characteristic of the lens gasket were studied by optical microscope. The results showed that the hydrogen blister appeared preferentially at the interface of inclusions. The corrosion depth was 0.65 millimeter. There were little intergranular crack on inner surface.

Corrosion characteristic of Ce Al brass in comparison with As Al brass

2009 ◽  
Vol 30 (5) ◽  
pp. 1743-1747 ◽  
Author(s):  
J.L. Chen ◽  
Z. Li ◽  
Y.Y. Zhao
Keyword(s):  
Corrosion Characteristic

Psidium guajava Leaves as Corrosion Inhibitor of Al-6061

2021 ◽  
Vol 1045 ◽  
pp. 231-236
Author(s):  
Femiana Gapsari ◽  
Andita Ganda
Keyword(s):  
Adsorption Isotherm ◽  
Mixed Type ◽  
Electrochemical Measurement ◽  
Psidium Guajava ◽  
Aluminum Surface ◽  
Corrosion Characteristic ◽  
Polarization Test ◽  
Enthalpy And Entropy ◽  
Temkin Adsorption Isotherm ◽  
Mixed Type Inhibitor

The anti-corrosion characteristic of the extract of Psidiumguajava leaves on aluminum in 3.5 wt% sodium chloride were examined using electrochemical measurement. The thermodynamic factors such as the free energy adsorption, change in enthalpy, and entropy was also analyzed. The adsorption isotherm was detail described to study the adsorption of the inhibitor on the aluminum surface with various concentrations of the inhibitor. The electrochemical measurement was done through the potentiodynamic polarization test. The results show that the inhibitor act as the mixed type inhibitor and its adsorption on the aluminum surface obeys Temkin adsorption isotherm. The study suggests that the use of Psidium guajava leaves extract for the food industrial application is eco-friendly and safe, especially in salt solution medium.

Electrochemical Noise Analysis on Corrosion of Aluminum Alloy

2010 ◽  
Vol 146-147 ◽  
pp. 1043-1048
Author(s):  
Zhi Qiang Tian ◽  
Xiao Dong Kong ◽  
Gang Wu ◽  
Yuan Sheng Wang
Keyword(s):  
Aluminum Alloy ◽  
Time Domain ◽  
Electrochemical Noise ◽  
Noise Analysis ◽  
Frequency Domain Analysis ◽  
Corrosion Process ◽  
Characteristic Parameters ◽  
Corrosion Characteristic ◽  
Spectra Analysis ◽  
The Time Domain

The characteristic parameters of electrochemical noise (EN) spectra were used to study the corrosion process of aluminum alloy in distilled water with or without chlorate (Cl-).The experimental results showed that the parameters obtained from the time-domain spectra analysis were not consistent with the parameters obtained from the frequency-domain analysis. This paper attempted to explain the phenomenon by the time-domain noise spectra, the corrosion characteristic of aluminum alloy, the source of noise transient, and the types of the pitting corrosion of aluminum alloy.

Investigation on Material under Accelerated Simulator Environment in Laboratory and Tropical Marine Environment of Aircraft Structure

2011 ◽  
Vol 236-238 ◽  
pp. 2619-2625
Author(s):  
Yue Liang Chen ◽  
Jian Jun Hu ◽  
Gui Xue Bian ◽  
Yong Zhang ◽  
Hao Luo
Keyword(s):  
Mass Loss ◽  
Marine Environment ◽  
Base Material ◽  
Corrosion Damage ◽  
Aircraft Structure ◽  
Corrosion Characteristic ◽  
Accelerated Corrosion ◽  
Corrosion Depth ◽  
Ocean Environment ◽  
Damage Characteristic

The important factors induced corrosion damage of aircraft are analyzed. Based on airport ground environment spectrum, the LY12CZ specimens are tested in laboratory using the accelerated corrosion spectrum. Some specimens are exposed on deck in tropical marine environment. The corrosion characteristic of the coating and base material is inspected and corrosion damage size is measured after the specimens have been accelerated corrosion tested for 5,10,15,20 and 30 years respectively and the specimens have been exposed on deck. The corrosion characteristic of specimens are analyzed and compared using several evaluating indicator. The results show that the corrosion damage characteristic of the specimen in the test is consistent with which in service situations. And the corrosion of material exposed in ocean environment is obviously accelerated. The corrosion depth is measured and the mass loss by corrosion is weighed. The distribution function of the corrosion depth and the characteristic of the mass loss by corrosion are given. The corrosion equivalent relationship under these two environments is determined by contrasting the corrosion depth and the corrosion characteristic.

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