Atmospheric corrosion severity and the precision of salt deposition measurements made by the wet candle method

2021 ◽  
pp. 1-12
Author(s):  
R. J. Santucci ◽  
R. S. Davis ◽  
C. E. Sanders
Keyword(s):  
Atmospheric Corrosion ◽  
Salt Deposition

New atmospheric corrosion inhibitor of aluminum alloy D16

2020 ◽  
pp. 38-46
Author(s):  
A.M. Semiletov ◽  
◽  
Yu.B. Makarychev ◽  
A.A. Chirkunov ◽  
L.P. Kazansky ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Inhibitor ◽  
Atmospheric Corrosion ◽  
Protective Layer ◽  
Humid Atmosphere ◽  
Water Condensation ◽  
Equimolar Composition ◽  
Aluminum Hydroxides ◽  
Daily Water ◽  
20 Nm

The application of mixed corrosion inhibitor (CI), which is an equimolar composition of oleoyl sarcosinate (SOS) and sodium flufenamate (SFF), for protection of D16 aluminum alloy from atmospheric corrosion has been studied. The polarization measurements used to assess the effectiveness of preliminary passivation of the alloy with solutions of SOS, SFF and their composition showed significant advantages of mixed CI. The XPS method was used to study features of CI adsorption on the surface of D16 alloy. It has been established that upon adsorption of SOS and SFF separately a monolayer is formed, firmly bonded to the alloy surface, thickness of which is not exceeding 2.6—3.2 nm. After the joint adsorption of these CI, the layer thickness reaches 12—20 nm. The composition of this layer includes a considerable amount of Al3+ ions (~20%) related to their compounds with SFF and SOS, as well as to aluminum hydroxides. A possible mechanism for the formation of such a protective layer is proposed. The results of corrosion tests in a humid atmosphere with daily water condensation on samples of D16 alloy confirmed the high protective ability of the mixed CI film.

On relevance of Faraday current of macrogalvanic pairs when using stimulants and inhibitors of atmospheric corrosion of metals

2019 ◽  
pp. 15-21
Author(s):  
V. I. Vigdorovich ◽  
◽  
L. Ye. Tsygankova ◽  
A. V. Dorokhov ◽  
M. V. Vigdorovich ◽  
...  
Keyword(s):  
Atmospheric Corrosion

AK STEEL NITRONIC 30

Alloy Digest ◽  
2013 ◽  
Vol 62 (3) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Abrasion Resistance ◽  
Atmospheric Corrosion ◽  
High Strength ◽  
Good Resistance ◽  
Temperature Performance

Abstract AK Steel Nitronic 30 has good wet abrasion resistance, good resistance to aqueous and atmospheric corrosion, high strength, economy, and improved stress-corrosion cracking resistance over common 18-8 stainless steels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming and joining. Filing Code: SS-1138. Producer or source: AK Steel Corporation.

USS COR-TEN A

Alloy Digest ◽  
1972 ◽  
Vol 21 (11) ◽  
Keyword(s):  
United States ◽  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Atmospheric Corrosion ◽  
Heat Treating ◽  
Steel Composition ◽  
United States Steel Corporation ◽  
Structural Carbon ◽  
Minimum Yield ◽  
Structural Carbon Steel

Abstract USS COR-TEN A, the original COR-TEN Steel composition (see U.S.S. COR-TEN, Alloy Digest SA-17, April 1954), has 5 to 8 times the atmospheric corrosion resistance of structural carbon steel and a minimum yield point of 50,000 psi in sections through 1/2-inch thick. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-283. Producer or source: United States Steel Corporation.

AK STEEL TYPE 304

Alloy Digest ◽  
2020 ◽  
Vol 69 (5) ◽  
Keyword(s):  
Stainless Steel ◽  
Carbon Content ◽  
Atmospheric Corrosion ◽  
Carbide Precipitation ◽  
Steel Grade ◽  
Good Resistance ◽  
Steel Type ◽  
Temperature Performance ◽  
Type 304 ◽  
Lower Carbon

Abstract AK Steel Type 304 is a chromium-nickel austenitic stainless steel. It is a variation of the base 18-8 grade, but with higher chromium and lower carbon content. The lower carbon content minimizes carbide precipitation due to welding and reduces its susceptibility to intergranular corrosion. Type 304 is the most versatile and widely used stainless steel grade. It combines good resistance to atmospheric corrosion and to many chemicals, food, and beverages. It has excellent formability. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties as well as fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming and joining. Filing Code: SS-1317. Producer or source: AK Steel Corporation. Originally published April 2020, corrected May 2020.

DYNALLOY

Alloy Digest ◽  
1957 ◽  
Vol 6 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Atmospheric Corrosion ◽  
High Strength ◽  
Heat Treating ◽  
Carbon Steels ◽  
Rolled Steel ◽  
Bend Strength ◽  
Steel Company

Abstract DYNALLOY is a versatile low-alloy, high-strength, flat rolled steel which combines high physical properties with ductility and weldability. It has higher atmospheric corrosion resistance, and also higher resistance to abrasion, impact and fatigue than plain carbon steels. This datasheet provides information on composition, tensile properties, and bend strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-56. Producer or source: Alan Wood Steel Company.

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