Application of speckle technique in corrosion process monitoring of an aluminum alloy

2009 ◽  
Author(s):  
Jie Lu ◽  
Guang-ping Zou
Keyword(s):  
Aluminum Alloy ◽  
Process Monitoring ◽  
Corrosion Process

Corrosion Process Monitoring Using Wavelet Analysis

2000 ◽  
Vol 39 (5) ◽  
pp. 1256-1263 ◽  
Author(s):  
X. D. Dai ◽  
R. L. Motard ◽  
B. Joseph ◽  
D. C. Silverman
Keyword(s):  
Wavelet Analysis ◽  
Process Monitoring ◽  
Corrosion Process

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.

Corrosion Resistance of KH-550 and KH-567 Composite Silane Films on Cast Aluminum Alloy

2012 ◽  
Vol 460 ◽  
pp. 90-93
Author(s):  
Qi Zhou ◽  
Guang Xia Sun ◽  
Ping Zhao ◽  
Hong Yan Liu
Keyword(s):  
Corrosion Resistance ◽  
Aluminum Alloy ◽  
Electrochemical Impedance ◽  
Water Immersion ◽  
Paint Film ◽  
Corrosion Process ◽  
Cast Aluminum Alloy ◽  
Neutral Salt ◽  
Cast Aluminum ◽  
Phosphate Film

The silane films are fabricated by dipping cast aluminum alloy in silane solution, then curing films. The corrosion resistance of single silane film, composite silane film is compared with phosphating film through acid dropping test, salt water immersion test and electrochemical impedance test (EIS), the results shows that the silane films are obviously superior to the phosphating films in terms of the corrosion resistance of acid solution and neutral salt solution, particularly the corrosion resistance of composite silane films is much better than sigle silane films; corrosion polarization curves show that the corrosion tendency of KH550+KH567 composite silane film is minimum, corrosion rate is yet minimal, corrosion process of this silane films is controled by diffusion step. The corrosion process of uncoated aluminum substrate, KH550 silane films, phosphating films are controlled by electrochemical step. The impedance of phosphate films are lower than the silane films. Appropriate silane treatment can effectively improve adhesion between the coating and the Al substrate. The adhesion between silane film and paint film is firmer than the phosphate film, so silane film is an excellent replacement to phosphate film for painting pre-treatment.

Structural Features of Corrosion Of Aluminum Alloys in Water at 300 C

CORROSION ◽  
1958 ◽  
Vol 14 (1) ◽  
pp. 71-74 ◽  
Author(s):  
KURT M. CARLSEN
Keyword(s):  
Aluminum Alloy ◽  
Aluminum Alloys ◽  
Structural Features ◽  
Corrosion Process ◽  
Distilled Water ◽  
Ni Alloys ◽  
Cu Alloys ◽  
Structural Details ◽  
Fe Alloys

Abstract A number of aluminum alloy specimens were immersed in distilled water heated to 300 C and a study made of the structural features of corrosion. Samples were of the following general types: Al-Ni alloys, Al-Fe alloys, Al-Ni-Fe alloys, Al-Cu alloys and Al-Ni-Si alloys. After exposure samples were examined by means of a metallographic microscope. In a number of cases the specimens were ground on a metallographic polishing wheel to reveal structural details of the corrosion process. Photomicrographs of both polished and unpolished specimens are included with the paper. 6.4.2

Corrosion process monitoring by AFM higher harmonic imaging

2017 ◽  
Vol 28 (11) ◽  
pp. 114001 ◽  
Author(s):  
S Babicz ◽  
A Zieliński ◽  
J Smulko ◽  
K Darowicki
Keyword(s):  
Process Monitoring ◽  
Harmonic Imaging ◽  
Corrosion Process ◽  
Higher Harmonic
Sign in / Sign up

Export Citation Format

Share Document