Novel composite films prepared by sol–gel technology for the corrosion protection of AZ91D magnesium alloy

2009 ◽  
Vol 66 (3) ◽  
pp. 328-335 ◽  
Author(s):  
Shiyan Zhang ◽  
Qing Li ◽  
Jiaman Fan ◽  
Wei Kang ◽  
Wei Hu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Protection ◽  
Sol Gel ◽  
Composite Films ◽  
Az91d Magnesium Alloy

58S and 68S sol-gel glass-like bioactive coatings for enhancing the implant performance of AZ91D magnesium alloy

2020 ◽  
Vol 400 ◽  
pp. 126224 ◽  
Author(s):  
S.A. Omar ◽  
J. Ballarre ◽  
Y. Castro ◽  
E. Martinez Campos ◽  
W. Schreiner ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Sol Gel ◽  
Bioactive Coatings ◽  
Az91d Magnesium Alloy

Synthesis and characterization of boron and phosphorus-containing phenol formaldehyde resin-modified polyurethane composites

2020 ◽  
Vol 10 (7) ◽  
pp. 1057-1067
Author(s):  
Kuo-Hui Wu ◽  
Je-Chuang Wang ◽  
Min-Jhong Jheng ◽  
Yin-Chiung Chang
Keyword(s):  
Corrosion Protection ◽  
Phenol Formaldehyde ◽  
Salt Spray ◽  
Sol Gel ◽  
Composite Films ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Mechanical And Thermal Properties ◽  
Gravimetric Analysis ◽  
Phosphorus Containing

Composite films with polyurethane (PU), phenol formaldehyde resin (PFR) and boron, phosphorus-containing phenol formaldehyde resins (P-PFR and B, P-PFR), were synthesized using sol–gel and copolymerization techniques. These composite films were deposited via spin-coating onto an aluminum alloy (AA) for improve the corrosion protection. The effects of different types of PFR on the structural, thermal and mechanical properties and corrosion resistance of the composites were investigated. The structures and morphologies of the composites were investigated by the gel permeation chromatography (GPC), Fourier transform infrared (FTIR), scanning electronic microscopy (SEM) and atomic force microscopy (AFM). It was shown from the dynamic mechanical analysis (DMA) and thermal gravimetric analysis (TGA) that the mechanical and thermal properties of PU were improved by incorporation of PFR, P-PFR and B, P-PFR. In addition, the PU/PFR composites provided an excellent corrosion protection in comparison with PU according to potentio-dynamic and salt-spray analyses.

Impedance Behavior of the Composite Coatings Prepared on Magnesium Alloy AZ91 in Simulated Seawater Solution

2014 ◽  
Vol 900 ◽  
pp. 526-530
Author(s):  
Wei Shang ◽  
Zhou Lan Yin ◽  
Yu Qing Wen ◽  
Xu Feng Wang
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Protection ◽  
Corrosion Behavior ◽  
Electrochemical Impedance ◽  
Composite Coatings ◽  
Sol Gel ◽  
Soaking Time ◽  
Magnesium Alloy Az91 ◽  
Micro Arc Oxidation ◽  
Simulated Seawater

The composite coatings were obtained on a magnesium alloy by micro-arc oxidation and sol-gel technique. Electrochemical impedance spectroscopy (EIS) was used to evaluate the corrosion behavior of MAO coating and composite coatings in a simulated seawater solution. The results show that corrosion behavior of the MAO coating and composite coatings are different at different immersion times. Corrosion protection of the MAO coating gradually weaken with the extension of soaking time, but corrosion protection of the composite coatings become stronger first and then weaken.

Effect of sintering temperature on corrosion properties of sol–gel based Al2O3 coatings on pre-treated AZ91D magnesium alloy

2009 ◽  
Vol 51 (12) ◽  
pp. 2950-2958 ◽  
Author(s):  
Xiankang Zhong ◽  
Qing Li ◽  
Bo Chen ◽  
Juping Wang ◽  
Junying Hu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Corrosion Properties ◽  
Az91d Magnesium Alloy
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