Effect of Chromium Diboride Additives in Intermetallic Matrix on the Corrosion Resistance of NiAl–CrB2 Composites in Sea Water

2016 ◽  
Vol 55 (3-4) ◽  
pp. 195-200 ◽  
Author(s):  
V. A. Lavrenko ◽  
A. P. Umanskii ◽  
E. N. Polyarus ◽  
V. N. Talash ◽  
V. A. Shvets ◽  
...  
Author(s):  
A.A. Alkhimenko ◽  
◽  
I.E. Kolyushev ◽  
A.A. Kharkov ◽  
N.O. Shaposhnikov ◽  
...  

Alloy Digest ◽  
1995 ◽  
Vol 44 (5) ◽  

Abstract 90-10 Cupro-nickel is a highly ductile, malleable and corrosion resisting alloy, suitable for water applications. The alloy has approximately 1.4% iron to improve its resistance to sea water. It has good resistance to general corrosion and erosion. Easily fabricated. Readily weldable. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance. Filing Code: CU-600. Producer or source: G.O. Carlson Inc.


Alloy Digest ◽  
1975 ◽  
Vol 24 (5) ◽  

Abstract IN-838 is a wrought copper-15% nickel alloy with a controlled chromium addition for improved corrosion resistance in flowing sea water. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-297. Producer or source: Brass mills.


Alloy Digest ◽  
1957 ◽  
Vol 6 (12) ◽  

Abstract UMEN ALLOY 9 is a manganese bronze having excellent combination of strength and corrosion resistance in fresh and sea water. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-57. Producer or source: Lumen Bearing Company.


Alloy Digest ◽  
1995 ◽  
Vol 44 (4) ◽  

Abstract VLX 954 is an austenitic stainless steel with 6% (nominal) molybdenum. The alloy is particularly resistant to localized corrosion in sea water and chloride environments. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-589. Producer or source: DMV Stainless USA Inc.


Author(s):  
S. Kuroda ◽  
T. Fukushima ◽  
T. Kodama ◽  
M. Sasaki

Abstract 316L stainless steel and Hastelloy C alloy powders were sprayed by an HVOF apparatus onto mild steel substrates. The microstructure, pore size distribution, composition and corrosion resistance of thus obtained coatings were evaluated experimentally. Corrosion resistance in sea-water was examined by monitoring the impedance and corrosion potential of samples immersed in artificial sea-water at 300 K over a period of more than 3 months and also by polarization measurement. It was found that the stainless coatings composed mainly of plastically deformed particles and some splats which were molten at the impact. By increasing the combustion pressure, the porosity as measured by mercury porosimeter could be reduced to below 1%. In comparison, Hastelloy C deposits sprayed under the standard condition were so dense that its porosity could not be measured by the porosimeter. The polarization curve and the results of impedance monitoring both exemplified that the Hastelloy C coatings possess much superior corrosion resistance to the stainless coatings in sea-water, which was attributed to the higher density and better adhesion of the Ni-base alloy coatings.


2019 ◽  
Vol 21 (3) ◽  
pp. 127
Author(s):  
Hardi Hidayat ◽  
Budi Setyahandana ◽  
Yohannes Sardjono ◽  
Yulwido Adi

The purpose of this study is to determine the value of corrosion rate influenced by coastal environment and seawater to nickel as a collimator base material for the application of boron neutron capture therapy (BNCT). In this research, the authors used 99.9% pure nickel as the reference material. Corrosion testing was carried out to determine the rate of corrosion of nickel as a base material for BNCT. After the specimens were formed, the test specimens were then corroded for 12 weeks, with various conditions such as indoor, outdoor environment, static seawater, and moving seawater. The results of this study indicated that in corrosion testing with indoor condition, the corrosion rate values are 0.61-1.00 mpy. For outdoor condition, the corrosion rate is 0.89-1.34 mpy. Meanwhile, at static seawater conditions, the corrosion rate is 0.97-1.24 mpy. Lastly, for moving seawater condition, the corrosion rate is 1.64-1.91 mpy. The results showed that corrosion resistance was relatively the same for all nickel exposed to corrosion in the coastal environment. Therefore, in regards to corrosion resistance, using nickel as a collimator base material for BNCT applications is considered as safe.Keywords: BNCT, Nickel, Corrosion, Coastal Environtment, Sea Water


1996 ◽  
Vol 84 ◽  
pp. 23-30
Author(s):  
I. Trigui ◽  
H. Sidhom ◽  
C. Braham ◽  
J. Lédion

Duplex stainless steels crevice and pitting corrosion resistance in synthetic sea water is studied. Conventional electrochemical tests and image analysis techniques are used. Three commercial steels are examined. The forged material has the best behaviour, whereas cast materials, in spite of their high nitrogen contents, have a lower corrosion resistance. Micrographic studies show a good correlation between pittings distribution and inclusions distribution and reveal that gamma phase behaviour is more affected by inclusions. The metallurgic purity of products seems to be the most important parameter in this type of corrosion. Consequently, the PREN index is questionable in pitting corrosion grading of these steels because it does not take into acount the inclusions effect.


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