Microstructural and Electrochemical Characterization of Zinc Coating onto Low Carbon Steel Substrate

2021 ◽  
Author(s):  
A. Medjaldi ◽  
A. Himour ◽  
M. Bououdina ◽  
S. Ouchenane ◽  
A. Gharbi
Keyword(s):  
Carbon Steel ◽  
Steel Substrate ◽  
Zinc Coating ◽  
Low Carbon Steel ◽  
Electrochemical Characterization ◽  
Low Carbon

Nano-Micro Characterization of NiCoCrAl Coating on Carbon Steel Substrate

2014 ◽  
Vol 896 ◽  
pp. 586-590 ◽  
Author(s):  
Sugiarti Eni ◽  
Kemas Zaini ◽  
Yong Ming Wang ◽  
N. Hashimoto ◽  
Shigenari Hayashi ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Steel Substrate ◽  
Extreme Environments ◽  
Low Carbon Steel ◽  
Hexagonal Structure ◽  
Coating System ◽  
Low Carbon ◽  
Coat Layer ◽  
Two Phases

The corrosion of carbon steel is major infrastructure degradation problem in practically all industries, including chemical materials, mineral, and petrochemical industries. Coating on carbon steel is one of the techniques which required improving corrosion resistance in extreme environments. In present work, NiCoCrAl was diffusion-coated onto low carbon steel by electrodeposition for NiCo and pack cementation for Cr and Al. The cross section of coated specimen was observed and analyzed using SEM and TEM. Two types of coating processes have been challenging the formation of bond-coat layer on carbon steel substrate with different temperature coating process. SEM and EDS results show that the coating comprises three layers: intermetallics zone of Ni (Al) and Al (Cr), interdiffusion zone of Ni (Co), and there is the substrate. By XTEM observation, it was found that γ (Ni,Fe) and ζ hexagonal structure were identified in all specimens. Orthorhombic structure with the Al3Ni was identified in specimen developed at temperature of 800OC. Further, the top surface of a 1000OC specimen has two phases of β-NiAl and ζ hexagonal structure. In order to understand the performance of two types coating system with different temperature process, oxidation test at temperature of 800OC for 100 hours has been carried out and the result shows that coating system which was developed at 800OC has better oxidation resistance compare to 1000OC coating system.

Effects of Dipping Pretreatment on the Flame Deposition of Carbon Nanostructure on the Low Carbon Steel Substrate

2013 ◽  
Vol 734-737 ◽  
pp. 2269-2272
Author(s):  
Hong Mei Zhu ◽  
Shu Mei Lei ◽  
Tong Chun Kuang
Keyword(s):  
Nitric Acid ◽  
Carbon Steel ◽  
Acid Solution ◽  
Carbon Nanofibers ◽  
Carbon Nanoparticles ◽  
Steel Substrate ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Carbon Nanostructure ◽  
Flame Method

In this paper, a low carbon steel was used as the substrate to prepare the carbon nanostructural materials by the oxygen-acetylene flame method. The experimental results show that the composite products including nodular carbon nanoparticles and amorphous carbon were obtained on the substrate after a mechanical polishing pretreatment. Comparatively, the short tubular carbon nanofibers with the diameter of around 100 nm were deposited on the substrate pretreated by dipping in the concentrated nitric acid solution. The possible mechanism for the growth of such carbon nanofibers was discussed.

scholarly journals Optical characterization of Zn coatings deposited on low carbon steel substrates

2012 ◽  
Vol 356 ◽  
pp. 012017
Author(s):  
G Bodurov ◽  
N Boshkov ◽  
L Lutov ◽  
T Ivanova ◽  
K A Gesheva
Keyword(s):  
Carbon Steel ◽  
Low Carbon Steel ◽  
Optical Characterization ◽  
Low Carbon ◽  
Steel Substrates

scholarly journals The Microstructure of Annealed Galfan Coating on Steel Substrate

2012 ◽  
Vol 57 (2) ◽  
pp. 517 ◽  
Author(s):  
M. Żelechower ◽  
J. Kliś ◽  
E. Augustyn ◽  
J. Grzonka ◽  
D. Stróż ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Electron Diffraction ◽  
Steel Substrate ◽  
Low Carbon Steel ◽  
Alloy Coating ◽  
Annealed Sample ◽  
Low Carbon ◽  
Interface Area ◽  
Two Phase ◽  
Al Content

The Microstructure of AnnealedGalfanCoating on Steel SubstrateThe commercially availableGalfancoating containing 5-7wt.% of Al deposited on the low carbon steel substrate by hot dipping has been examined with respect to the microstructure of the coating/substrate interface area. The application of several experimental techniques (SEM/EDS, XRD, TEM/AEM/EDS/ED) allowed demonstrating the two-phase structure of the alloy coating in non-treated, commercially availableGalfansamples: Zn-rich pre-eutectoidηphase grains are surrounded by lamellar eutectics ofβ-Al andη-Zn. The transition layer between the alloy coating and steel substrate with the considerably higher Al content (SEM/EDS, TEM/EDS) has been found in both non-treated and annealed samples (600°C/5 minutes). Only the monoclinic FeAl3Znxphase however was revealed in the annealed sample (TEM/electron diffraction) remaining uncertain the presence of the orthorhombic Fe2Al5Znxphase, reported by several authors.

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