Determination of the best behavior among AISI D3 steel, 304 stainless steel and CrN/AlN coatings under erosive-corrosive effect

Vacuum ◽  
2012 ◽  
Vol 86 (12) ◽  
pp. 1886-1894 ◽  
Author(s):  
J.C. Caicedo ◽  
G. Cabrera ◽  
W. Aperador ◽  
H.H. Caicedo ◽  
A. Mejia
Keyword(s):  
Stainless Steel ◽  
304 Stainless Steel ◽  
Corrosive Effect ◽  
Aisi D3 Steel

scholarly journals A Comparative Study of Corrosive-Erosive Effects at AISI D3 Steel, 304 Stainless Steel and CrN/AlN Material

2012 ◽  
Vol 6 (1) ◽  
pp. 14-21 ◽  
Author(s):  
J. C. Caicedo ◽  
G. Cabrera ◽  
H. H. Caicedo ◽  
W. Aperador
Keyword(s):  
Stainless Steel ◽  
Physical Vapor Deposition ◽  
Ph Value ◽  
Impact Angle ◽  
304 Stainless Steel ◽  
Test Machine ◽  
Erosion Processes ◽  
Coated Materials ◽  
The Impact ◽  
Aisi D3 Steel

Corrosive-erosive effect on AISI D3 steel, 304 stainless steel and CrN/AlN coating in aqueous NaCl slurries was studied. CrN/AlN multilayer films with a thickness of 3 µm and bilayer period of Λ = 60 nm (50 bilayers) were obtained by using the physical vapor deposition (PVD) technique (magnetron sputtering). The corrosion-erosion experiments were performed in a test machine in which the impingement velocity, impact angle, concentration of solids and pH of the solution were controlled. Polarization curves were simultaneously obtained to correlate the electrochemical effects to the erosive wear mechanisms. The slurry used consists of silica particles suspended in a mixture of acid solution and 3.5% NaCl, with a pH value of 5.6. Electrochemical results showed the best corrosion resistance for 304 stainless steels. Additionally, the surface analysis by SEM micrograph revealed formation of cracks in CrN/AlN multilayers coating and plastic deformation in both steel substrates (AISI D3 steel, 304 stainless steel), especially when the mean impact angle is a critical value of 90°. Measurements of critical and passive current densities showed that the behavior of coated materials differed depending on the substrate that is used. Nonetheless, in a general way, by increasing the impact angle and by changing its incidence from normal to grazing, it led to a resistance to corrosion-erosion processes.

scholarly journals DESIGN, CONSTRUCTION AND EVALUATION OF A THERMAL CONDUCTIVITY METER BASED ON ASTM E1225 STANDARD

2016 ◽  
Vol 15 (1) ◽  
pp. 20
Author(s):  
L. L. Manetti ◽  
I. Dias Jr ◽  
I. S. Kiyomura ◽  
R. C. Cavalcanti ◽  
F. B. Pagliosa
Keyword(s):  
Thermal Conductivity ◽  
Stainless Steel ◽  
Cooling System ◽  
Material Selection ◽  
304 Stainless Steel ◽  
Cylinder Block ◽  
Electric Resistance ◽  
Future Goals ◽  
Design Construction

The focus of this work is the design, construction and evaluation of a thermal conductivity meter apparatus based on ASTM E- 1225 standard. The thermal conductivity is a heat-transport propriety and with the development of new materials the determination of thermophysical properties for its correct use becomes necessary. The apparatus was projected in CAD software and the material selection was done following the standard recommendations. For the meter bars were used 304 stainless steel, since its thermal conductivity is known. The heater was made with an aluminum cylinder block and a cartridge electric resistance. The cooling system was assembled using a Peltier thermoelectric plate and a fin heat sink equipped with a fan. Lastly, a steel pipe was used for building the guard cylinder. In order to evaluate the apparatus, the first specimen tested was the 304 stainless steel, the same material as the meter bars. The result of thermal conductivity showed an error of 6% relative to the value found in literature. However, in this test the temperature of isothermal guard cylinder was lower than the temperature required by the standard. Thus, the future goals will be the development of a temperature control for the guard cylinder and realization of more tests with different materials.

Determination of the sensitized zone extension in welded AISI 304 stainless steel using non-destructive electrochemical techniques

2008 ◽  
Vol 50 (4) ◽  
pp. 1149-1155 ◽  
Author(s):  
Pedro de Lima-Neto ◽  
Jesualdo P. Farias ◽  
Luis Flávio G. Herculano ◽  
Hélio C. de Miranda ◽  
Walney S. Araújo ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electrochemical Techniques ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Non Destructive

The determination of micro-arc plasma composition and properties of nanoparticles formed during cathodic plasma electrolysis of 304 stainless steel

2017 ◽  
Vol 118 (3) ◽  
pp. 33001
Author(s):  
Jovica Jovović ◽  
Stevan Stojadinović ◽  
Rastko Vasilić ◽  
Nenad Tadić ◽  
Nikola M. Šišović
Keyword(s):  
Stainless Steel ◽  
304 Stainless Steel ◽  
Arc Plasma ◽  
Plasma Composition ◽  
Plasma Electrolysis ◽  
Cathodic Plasma

Residual Stress Generation and Relaxation in Butt-Welded Pipes

1982 ◽  
Vol 104 (3) ◽  
pp. 188-192 ◽  
Author(s):  
S. Nair ◽  
E. Pang ◽  
R. C. Dix
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Stainless Steel ◽  
Residual Stresses ◽  
Numerical Scheme ◽  
Stress Generation ◽  
304 Stainless Steel ◽  
Thermally Induced ◽  
Steel Pipes

A numerical scheme for the determination of thermally induced local residual stresses and their relaxation behavior during heat treatment in the case of butt-welded pipes is described. The procedure is illustrated by considering 304 stainless steel and SAE 1020 steel pipes. The results are compared with available experimental and numerical results.

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