Copper Multilayer Coating Prepared by Ultrasonic-Electrodeposition

2010 ◽  
Vol 97-101 ◽  
pp. 1348-1351 ◽  
Author(s):  
Rong Hong Cui ◽  
Zhi Ming Yu ◽  
Yu Ting He ◽  
Wen Jun Shu
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Multilayer Coating ◽  
Average Diameter ◽  
Nacl Solution ◽  
Anode Polarization ◽  
Hno3 Solution ◽  
Diffraction Peaks

A kind of copper multilayer coating was prepared on stainless steel substrate using ultrasonic-electrodepositing method. The microstructure, hardness, wear resistance, adhesion and corrosion resistance of it were investigated respectively. The results show that the coating exhibits a multilayer structure and the thickness of each layer is about 0.3µm. The crystallite average diameter of it is obviously smaller than that of the ordinary electrodeposited copper coating. The diffraction peaks of Cu (200) and Cu (111) for it are obviously stronger, while Cu (220) for it is much weaker. Comparative investigations on the mechanical properties show that only the hardness of it is a little lower, whereas the wear resistance and the adhesion of it to the substrate are all evidently enhanced. The average start corrosion time of it in 20％ HNO3 solution is nearly three times delayed, and the corrosion rate is obviously decreased; anode polarization curves in 3.5% NaCl solution also show that the corrosion resistance of it is greatly improved.

scholarly journals Corrosion Behavior of FeB-30 wt.% Al0.25FeNiCoCr Cermet Coating in Liquid Zinc

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 622
Author(s):  
Xiaolong Xie ◽  
Bingbing Yin ◽  
Fucheng Yin ◽  
Xuemei Ouyang
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
316L Stainless Steel ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Liquid Zinc ◽  
Cermet Coating ◽  
Abrasion Wear ◽  
Better Than

The corrosion of galvanizing equipment parts by liquid zinc is an urgent problem that needs solving. In this work, FeB-30 wt.% Al0.25FeNiCoCr cermet coating was deposited on the surface of 316L stainless steel by AC-HVAF to protect galvanizing equipment parts from corrosion by liquid zinc. The microstructures and phase compositions of powders and the coating were determined by SEM, EDS, and XRD in detail. Additionally, the microhardness, fracture toughness, abrasion wear resistance, and corrosion resistance of the coating to liquid zinc were also studied. The results indicate that the abrasion wear resistance and corrosion resistance of the coating are much better than that of the 316L stainless steel substrate. The failure of the coating in liquid zinc is mainly due to the penetration of liquid zinc into macro-cracks, which causes the coating to peel off.

scholarly journals The Effect of Powder Composition on the Microstructure and Corrosion Resistance of Laser Cladding 60NiTi Alloy Coatings on SS 316L

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1104
Author(s):  
Zexu Du ◽  
Zhengfei Hu ◽  
Yuqiang Feng ◽  
Fan Mo
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Laser Cladding ◽  
316L Stainless Steel ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Eutectic Structure ◽  
Nacl Solution ◽  
Powder Composition ◽  
Ni Powder

Two kinds of 60NiTi powders were prepared by pure Ni mixed with Ti powders, and 55NiTi alloy powder with pure Ni powder and both the powders were fully mixed by alcohol ball milling. Two kinds of coatings (denoted as 60Ni-40Ti and 55NiTi-5Ni) were prepared on a 316L stainless steel substrate by laser cladding. The microstructure, microhardness and electrochemical behavior of the prepared coatings were investigated extensively. The results show that 55NiTi-5Ni has a typical dendritic eutectic structure, but 60Ni-40Ti tends to form a eutectic network structure. The main phases in both coatings are (Ni, Fe)Ti and (Ni, Fe)3Ti; however, the (Ni, Fe)Ti phase is dominant in 55NiTi-5Ni, but the (Ni, Fe)3Ti phase is more prevalent in 60Ni-40Ti. The microhardness was significantly improved with the 316L stainless steel substrate, and the microhardness of 55NiTi-5Ni is slightly higher than 60Ni-40Ti. The corrosion resistance of the two coatings in 3.5 wt% NaCl solution also leads to significant improvements compared with the substrate, and the corrosion resistance of 55NiTi-5Ni was also increased. These different behaviors and characteristics might be related to the different microstructures. Uniform and fine eutectic structure in 55NiTi-5Ni coating lead to better performance, which is also conducive to the formation of the dense oxide film to improve corrosion resistance.

scholarly journals Effects of NiSO4 Concentration on the Coloring Performance and Corrosion Resistance of the Colored Film on 304 Stainless Steel

Coatings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 598
Author(s):  
Wenwei Li ◽  
Jun-e Qu ◽  
Zhiyong Cao ◽  
Hairen Wang
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Electrochemical Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Negative Impact ◽  
304 Stainless Steel ◽  
Nacl Solution ◽  
Time Curve ◽  
Steel Surfaces

The colored films were successfully prepared on the 304 stainless steel surfaces in coloring solutions with different NiSO4 contents. The purpose of this study was to investigate the effects of NiSO4 in the coloring solution on the coloring performance of 304 stainless steel and corrosion resistance of the obtained colored film in NaCl solution. The coloring rate was determined from coloring potential-time curve, and the protection properties of the color films in a 3.5% NaCl solution were characterized by potentiodynamic polarization scan, electrochemical impedance spectroscopy, and wear resistance test. The results showed that adding NiSO4 could accelerate the coloring process but brought about a negative impact on the surface’s corrosion resistance.

Microstructure, hardness and wear resistance of reactive sputtered Mo–O–N films on stainless steel substrate

2015 ◽  
Vol 280 ◽  
pp. 1-7 ◽  
Author(s):  
Y. Sutou ◽  
S. Komiyama ◽  
M. Sonobe ◽  
D. Ando ◽  
J. Koike ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Stainless Steel Substrate ◽  
Steel Substrate

Investigation on corrosion performance of multilayer Ni-P/TiO2 composite coating on steel

2016 ◽  
Vol 23 (3) ◽  
pp. 309-314
Author(s):  
M. Edwin Sahayaraj ◽  
J.T. Winowlin Jappes ◽  
I. Siva ◽  
N. Rajini
Keyword(s):  
Corrosion Resistance ◽  
Mild Steel ◽  
Corrosion Behavior ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Multilayer Coating ◽  
Electroless Nickel ◽  
Corrosion Mechanism ◽  
Corrosion Performance ◽  
Electroless Ni

AbstractElectroless nickel coating treatment improves the corrosion resistance of mild steel. This work aims at studying the corrosion behavior of electroless Ni-P/TiO2 composite and multilayer coatings applied to the mild steel substrate as their as-plated state and furnace annealed at various temperatures and compared both the coatings’ corrosion performance. The corrosion behavior of the deposits was evaluated by potentiodynamic polarization studies in 3.5 wt% sodium chloride solution. The results showed that the corrosion resistance of the multilayer coating was two times higher compared to the composite coatings. Further, the corrosion mechanism was discussed in terms of microstructure, phase transformation, grain size, and microstrain.

Characterization of Hydroxyapatite Coated SS316L for Biomedical Application

2015 ◽  
Vol 813-814 ◽  
pp. 140-144
Author(s):  
R.B. Durairaj ◽  
S. Ramachandran ◽  
B. Sathish Kumar ◽  
T. Sekhar Vijay
Keyword(s):  
Corrosion Resistance ◽  
Vapour Deposition ◽  
Stainless Steel Substrate ◽  
Biomedical Application ◽  
Steel Substrate ◽  
Morphological Characteristics ◽  
Target Material ◽  
Deposition Method ◽  
Roughness Analysis

This paper focuses on characterization of Hydroxyapatite coated SS316 L using Pulse vapour deposition method. The target material (Hydroxyapatite) has been synthesised chemically in laboratory through the addition of (NH4)2HPO4 with Ca (NO3)24H2O solution. This mixture has been converted in to circular blocks through various processes as explained below and coated over the stainless steel substrate. The morphological characteristics of the coating and surface roughness analysis have done through SEM and AFM. Also the hardness and corrosion resistance of the coating are examined. It has been found that improved hardness when compared with SS316L (175 Hv) to Hydroxyapatite (245 Hv) coated SS316 L. Also the results of corrosion resistance test after 250 Hrs of experiment found that formation of red rust is attained for uncoated samples where as Hydroxyapatite coated samples remains unchanged.

Hardness and Wear Resistance of Ti-B-C-N Nanocomposite Coatings Synthesized by Multi-Target Magnetron Co-Sputtering

2013 ◽  
Vol 537 ◽  
pp. 63-66
Author(s):  
C.K. Gao ◽  
Meng Yin Liu ◽  
D.J. Li ◽  
Lei Dong ◽  
Han Qing Gu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Photoelectron Spectroscopy ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Nanocomposite Coatings ◽  
Substrate Bias ◽  
Maximum Hardness ◽  
X Ray ◽  
Work Pressure ◽  
Chemical States

Ti-B-C-N nanocomposite coatings were synthesized on Si(100) and stainless steel substrate by Multi-target Magnetron Co-sputtering. X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS) were employed to measure the structure and chemical states of the coatings. The measurements of nanoindenter and multi-functional tester indicated that the maximum hardness and elastic modulus were 42.8 GPa and 424 GPa when the work pressure was 0.5 Pa, the powers of Ti target and B4C were 60 and 150 W, the flows of N2 and Ar were 4 and 36 sccm, and the substrate bias was -100 V.

scholarly journals Microstructure and Properties of High-Entropy AlxCoCrFe2.7MoNi Alloy Coatings Prepared by Laser Cladding

Metals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1243 ◽  
Author(s):  
Minghong Sha ◽  
Chuntang Jia ◽  
Jun Qiao ◽  
Wenqiang Feng ◽  
Xingang Ai ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Laser Cladding ◽  
Pure Iron ◽  
Corrosion Potential ◽  
Nacl Solution ◽  
Σ Phase ◽  
High Entropy ◽  
Al Content ◽  
Crystal Phases

High-entropy AlxCoCrFe2.7MoNi (x = 0, 0.5, 1.0, 1.5, 2.0) alloy coatings were prepared on pure iron by laser cladding. The effects of Al content on the microstructure, hardness, wear resistance and corrosion resistance of the coatings were studied. The results showed that the crystal phases of the AlxCoCrFe2.7MoNi coatings changed from Mo-rich BCC1 + FCC to (Al, Ni)-rich BCC2 + Mo-rich BCC1 when x increased from 0 to 0.5, and the phase changed to an (Al, Ni)-rich BCC2 + (Mo, Cr)-rich σ phase as x increased further. The hardness of the coatings increased as the Al content increased. The Al2.0CoCrFe2.7MoNi coating exhibit best wear resistance. Addition of Al increased the corrosion potential in a 3.5 wt.% NaCl solution, and the coating with x = 1.0 exhibited the highest corrosion resistance.

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