Effect of Temperature on BCP Ceramics Coating on 316L Stainless Steel Using Electrophoretic Technique

2012 ◽  
Vol 501 ◽  
pp. 66-70 ◽  
Author(s):  
Asam M.A. Abudalazez ◽  
Shah Rizal Kasim ◽  
Azlan B. Ariffin ◽  
Zainal Arifin Ahmad
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Morphological Changes ◽  
Steel Substrate ◽  
Effect Of Temperature ◽  
Vacuum Furnace ◽  
X Ray Diffraction ◽  
X Ray ◽  
Deposition Voltage ◽  
Temperature Crack

Biphasic calcium phosphate (BCP) coatings on a medical grade 316L stainless steel substrate were prepared by electrophoretic deposition (EPD) using ethanol as a dispersive medium. The deposition voltage of 30V was applied for 1 min at 25, 40 and 60 °C, respectively. The coated substrates were sintered in a vacuum furnace at 800 °C for 1 h. The surface morphology, structure and phase composition of the coatings was investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results showed that by increasing deposition conditions of voltage and temperature, crack occurrence and morphological changes increased in the produced coatings. The optimum condition for crack-free surface was at 30 V at 25 °C.

Preparation of β-PbO2 and β-PbO2-MnO2 Coating on Stainless Steel Substrate

2012 ◽  
Vol 490-495 ◽  
pp. 3486-3490
Author(s):  
Qiang Yu ◽  
Zhen Chen ◽  
Zhong Cheng Guo
Keyword(s):  
Stainless Steel ◽  
Mass Fraction ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Substrate Material ◽  
X Ray Diffraction ◽  
X Ray ◽  
New Type ◽  
Plating Solution ◽  
Element Mass Fraction

In order to prepare a new type of anode material, stainless steel was selected as substrate material. The β-PbO2 coating on stainless steel substrate was prepared under the appropriate plating solution, and the PbO2-MnO2 coating was prepared with thermal decomposition. The crystal structure was determined by X-ray diffraction; Surface morphology was test by Scanning Electron Microscopy; the energy spectrum was used to determine element mass-fraction and the ratio of atomic number of the coatings.

scholarly journals Effect of Rare Earth Oxides on Microstructure and Corrosion Behavior of Laser-Cladding Coating on 316L Stainless Steel

Coatings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 636 ◽  
Author(s):  
Xu ◽  
Wang ◽  
Chen ◽  
Qiao ◽  
Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Rare Earth ◽  
Corrosion Behavior ◽  
Laser Cladding ◽  
316L Stainless Steel ◽  
Electrochemical Impedance ◽  
Salt Spray ◽  
Rare Earth Oxides ◽  
X Ray Diffraction ◽  
X Ray

The effect of rare earth oxides on the microstructure and corrosion behavior of laser-cladding coating on 316L stainless steel was investigated using hardness measurements, a polarization curve, electrochemical impedance spectroscopy (EIS), a salt spray test, X-ray diffraction, optical microscopy, and scanning electron microscopy (SEM). The results showed that the modification of rare earth oxides on the laser-cladding layer caused minor changes to its composition but refined the grains, leading to an increase in hardness. Electrochemical and salt spray studies indicated that the corrosion resistance of the 316L stainless steel could be improved by laser cladding, especially when rare earth oxides (i.e., CeO2 and La2O3) were added as a modifier.

Electrodeposition of Aluminum on 316L Stainless Steel from Molten Salts Based on Chlorides

2008 ◽  
Vol 373-374 ◽  
pp. 273-276 ◽  
Author(s):  
Yu Jiang Wang ◽  
Xin Xin Ma ◽  
Guang Wei Guo
Keyword(s):  
Stainless Steel ◽  
Cross Section ◽  
Molten Salts ◽  
Single Phase ◽  
316L Stainless Steel ◽  
Aluminum Layer ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Purity Aluminum ◽  
Scanning Electron

The electrodeposition of aluminum on 316L stainless steel from a molten salts based on chloride has been studied. The surface morphology of the aluminum layer has been examined through scanning electron microscope (SEM) and the structure of the aluminum layer has been analyzed by X-ray diffraction (XRD). The thickness of the deposited aluminum layer has been measured by the method of cross-section scan. It has been suggested that a white, smooth, non-porous and a high purity aluminum layer can be obtained on 316L stainless steel from the ternary chloride molten salts (AlCl3 – NaCl - KCl). And the structure of the aluminum layer was single-phase.

scholarly journals Characteristics of Carbide Interfacial Layer Formed During Deposition of DLC Films on 316L Stainless Steel Substrate

2017 ◽  
Vol 62 (4) ◽  
pp. 2211-2216 ◽  
Author(s):  
M. Dudek
Keyword(s):  
Stainless Steel ◽  
Photoelectron Spectroscopy ◽  
Interfacial Layer ◽  
316L Stainless Steel ◽  
Steel Substrate ◽  
Carbon Film ◽  
Ex Situ ◽  
Second Phase ◽  
X Ray ◽  
Dlc Film

AbstractThe paper presents the analysis of formation of interfacial layer during deposition of diamond like carbon film (DLC) on the 316L stainless steel by capacitive plasma discharge in the CH4atmosphere. The structure of the interfacial layer of DLC film was strongly affected by the temperature increase during the initial stages of the process. Initially, thin interfacial layer of 5 nm has been formed. As the temperature had reached 210°C, the second phase of the process was marked by the onset of carbon atoms diffusion into the steel and by the interface thickness increase. Finally, the growth of chromium carbide interface, the upward diffusion of chromium and nickel atoms to film, the etching and the decrease of the DLC film thickness were observed at 233°C. These investigations were carried out ex-situ by spectroscopic ellipsometry, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy.

PREFERABLE ORIENTATION OF CRYSTALLINE THIN-FILM OF MODIFIED BNN SYSTEM

1989 ◽  
Vol 03 (06) ◽  
pp. 465-470 ◽  
Author(s):  
MASAYUKI TSUKIOKA ◽  
TASUKU MASHIO ◽  
MASAJI SHIMAZU ◽  
TAKESHI NAKAMURA
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Stainless Steel ◽  
Steel Substrate ◽  
Rf Sputtering ◽  
Polished Surface ◽  
Diffraction Measurement ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quantitative Analyses

Using rf-sputtering method, modified BNN ( Ba 2 NaNb 5 O 15) thin-films, which are highly aligned, were prepared on a polished surface of a stainless steel plate and on a polished silicon wafer. It was found that preferably aligned thin-films were successfully obtained only when modified Nb-rich BNN target was used. Preferable orientation of these thin-films was confirmed by X-ray diffraction measurement. In order to find the correlation between preferable orientation and separation from plasma center, X-ray measurement was carried out at several points on the thin-film sputtered on a long stainless steel substrate (5×100 mm ). The result indicated that preferable orientation was dominant near the position of plasma center. In order to distinguish whether the strong X-ray peak observed in the preferably aligned BNN thin-film is due to (200) peak of Nb 2 O 5 or (440) peak of BNN, X-ray measurements and the following quantitative analyses; fluorescent X-ray, ICP (Induced Coupled Radio Frequency Plasma) and an Atomic Absorption Method, were carried out for films sputtered from Nb-rich BNN target. The results reveal that the thin-films include considerable quantity of barium and sodium. This suggests that the highly aligned thin-film is composed of modified BNN and not Nb 2 O 5.

Photocathode Protection Properties of TiO2/V2O5 Coating

2009 ◽  
Vol 79-82 ◽  
pp. 651-654 ◽  
Author(s):  
Min Jie Zhou ◽  
Li Zhong
Keyword(s):  
Stainless Steel ◽  
Steel Substrate ◽  
Sol Gel ◽  
304 Stainless Steel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Illumination ◽  
Type 304 ◽  
Type 304 Stainless Steel ◽  
Cathode Protection

Nano-sized TiO2/V2O5 bilayer coatings were prepared on type304 stainless steel substrate by sol-gel method and were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD). The performance of photocathode protection of the coating was investigated by the electrochemical method. SEM results indicate that the coating surface is continuous, uniform and dense, XRD spectra show that the coating is of anatase TiO2 and V2O5. The experimental results demonstrate that type 304 stainless steel with the bilayer coating can maintain cathode protection for 6h in the dark after irradiation by UV illumination for 1 h.

ELECTROCHEMICAL CARBONITRIDING OF 316L STAINLESS STEEL IN MOLTEN SALT SYSTEM

2018 ◽  
Vol 25 (03) ◽  
pp. 1850072
Author(s):  
YANJIE REN ◽  
BO XIAO ◽  
YAQING CHEN ◽  
JIAN CHEN ◽  
JIANLIN CHEN
Keyword(s):  
Stainless Steel ◽  
Molten Salts ◽  
316L Stainless Steel ◽  
Electrode System ◽  
Chromium Nitride ◽  
X Ray Diffraction ◽  
Compact Layer ◽  
X Ray ◽  
Carbon Sheet ◽  
Molten Salt System

This paper reports an electrochemical route for carbonitriding 316L stainless steel in molten salts. Carbonitriding process was accomplished in molten alkaline chloride (LiCl/KCl) with the addition of KNO2 at 480[Formula: see text]C using a three-electrode system in which a carbon sheet was the counter electrode. The carbonitriding layer of 316L stainless steel obtained by potentiostatic electrolysis was analyzed by several physical techniques. The results showed that a compact layer with a thickness of about 7[Formula: see text][Formula: see text]m formed after the treatment. According to X-ray diffraction analysis, chromium nitride and carbide formed on the surface of carbonitriding layer. The microhardness of the carbonitriding layer is HV 336, as compared to HV 265 for the substrate.

Quantitative Evaluation of Strain Induced Martensite in STS 316L Stainless Steel

2006 ◽  
Vol 326-328 ◽  
pp. 677-680 ◽  
Author(s):  
C.S. Kim ◽  
Il Ho Kim ◽  
Ik Keun Park ◽  
C.Y. Hyun
Keyword(s):  
Stainless Steel ◽  
Diffraction Analysis ◽  
316L Stainless Steel ◽  
Tensile Deformation ◽  
Martensite Phase ◽  
Microstructural Development ◽  
X Ray Diffraction ◽  
X Ray ◽  
Strain Induced Martensite ◽  
Ae Counts

In the present work, the strain induced martensite in 316L stainless steel was quantitatively characterized by X-ray diffraction, the measurement of the magnetic coercivity and the AE technique during the monotonic tensile deformation of plate specimens. Plate specimens subjected to different heat treatments (i.e. having different initial microstructures) were tensile-deformed and the AE counts obtained during tensile deformation were correlated with the microstructural development. The AE count was observed to increase with increasing amount of strain induced martensite phase, as determined by X-ray diffraction analysis. The potential of the AE technique and the measurement of the magnetic coercivity to be used for the evaluation of the tensile deformation was discussed in relation to the existence of strain-induced martensite.

Microstructure and Hardness Characterization of a NiCr/Cr3C2 Coating by High-Velocity Oxy-Fuel Thermal Spraying

2009 ◽  
Vol 79-82 ◽  
pp. 397-400
Author(s):  
Yu Ping Wu ◽  
Gai Ye Li
Keyword(s):  
Electron Microscopy ◽  
Stainless Steel ◽  
High Velocity ◽  
Steel Substrate ◽  
Thermal Spraying ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Hvof Thermal Spraying

A NiCr/Cr3C2 composite coating with a thickness of approximately 200 m was deposited onto 1Cr18Ni9Ti stainless steel substrate by high-velocity oxy-fuel (HVOF) thermal spraying. Microstructure of the coating was characterized using X-ray diffraction(XRD), scanning electron microscopy(SEM) and transmission electron microscopy (TEM). The coating comprised a NiCr matrix and two types of carbides. The NiCr matrix was composed of an amorphous phase and nanocrystalline grain with a size of 10–50 nm. The microhardness of the coating was found to be 1200Hv, which is significantly greater than that of the stainless steel (1Cr18Ni9Ti) substrate (285 Hv).

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