High Temperature Corrosion Resistance in Molten Salts in Solar Power Concentration Plants: High Temperature Corrosión Monitoring in Dynamic and Static Conditions

Abstract INCONEL ALLOY 671 is a nickel-chromium alloy having excellent resistance to high-temperature corrosion. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-180. Producer or source: Huntington Alloy Products Division, An INCO Company.

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ACI TYPE HN

Alloy Digest ◽

10.31399/asm.ad.ss0410 ◽

1982 ◽

Vol 31 (6) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Steel Casting ◽

Nickel Content ◽

Heat Treating ◽

High Temperature Corrosion ◽

Temperature Performance ◽

Wide Range ◽

Iron Chromium

Abstract Type HN is an iron-chromium-nickel alloy containing sufficient chromium for good high-temperature corrosion resistance and with nickel content in excess of the chromium. This alloy has properties somewhat similar to the more widely used ACI Type HT alloy but with better ductility. Type HN is used for highly stressed components in the 1800-2000 F temperature range. It is used in the aircraft, automotive, petroleum, petrochemical and power industries for a wide range of components and parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-410. Producer or source: Various stainless steel casting companies.

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Exploring the Effect of Silicon on the High Temperature Corrosion of Lean FeCrAl Alloys in Humid Air

Oxidation of Metals ◽

10.1007/s11085-020-10019-2 ◽

2021 ◽

Author(s):

T. Sand ◽

A. Edgren ◽

C. Geers ◽

V. Asokan ◽

J. Eklund ◽

...

Keyword(s):

Corrosion Resistance ◽

High Temperature ◽

Oxidation Behavior ◽

High Temperature Corrosion ◽

The Other ◽

Oxide Scales ◽

Protective Oxide ◽

New Approach ◽

Fecral Alloys ◽

Cr Evaporation

AbstractA new approach to reduce the chromium and aluminium concentrations in FeCrAl alloys without significantly impairing corrosion resistance is to alloy with 1–2 wt.% silicon. This paper investigates the “silicon effect” on oxidation by comparing the oxidation behavior and scale microstructure of two FeCrAl alloys, one alloyed with silicon and the other not, in dry and wet air at 600 °C and 800 °C. Both alloys formed thin protective oxide scales and the Cr-evaporation rates were small. In wet air at 800 °C the Si-alloyed FeCrAl formed an oxide scale containing mullite and tridymite together with α- and γ-alumina. It is suggested that the reported improvement of the corrosion resistance of Al- and Cr-lean FeCrAl’s by silicon alloying is caused by the appearance of Si-rich phases in the scale.

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A new approach to improve high temperature corrosion resistance of thermally sprayed coatings by using electrochemical corrosion tests

Materials and Corrosion ◽

10.1002/maco.201005860 ◽

2010 ◽

Vol 62 (7) ◽

pp. 623-634 ◽

Cited By ~ 2

Author(s):

T. Neddemeyer ◽

M. Mocker ◽

M. Faulstich

Keyword(s):

Corrosion Resistance ◽

High Temperature ◽

Electrochemical Corrosion ◽

High Temperature Corrosion ◽

New Approach ◽

Corrosion Tests ◽

Thermally Sprayed Coatings ◽

Thermally Sprayed ◽

Sprayed Coatings

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Electrochemical Studies on High-Temperature Corrosion of Silicon-Iron Coatings and Iron Aluminide Intermetallic Alloys by Molten Salts

CORROSION ◽

10.5006/1.3290373 ◽

2001 ◽

Vol 57 (6) ◽

pp. 489-496 ◽

Cited By ~ 3

Author(s):

M. Amaya ◽

J. Porcayo-Calderon ◽

L. Martinez

Keyword(s):

High Temperature ◽

Molten Salt ◽

Electric Power ◽

Molten Salts ◽

Corrosion Current ◽

High Temperature Corrosion ◽

Iron Aluminide ◽

Fuel Oil ◽

Silicon Iron ◽

Salt Corrosion

Abstract The performance of Fe-Si coatings and an iron aluminide (FeAl) intermetallic alloy (FeAl40at%+0.1at%B+10vol%Al2O3) in molten salts containing vanadium pentoxide (V2O5) and sodium sulfate (Na2SO4) is reported. Corrosion and fouling by ash deposits containing V2O5 and Na2SO4 are typical corrosion problems in fuel oil-fired electric power units. High-temperature corrosion tests were performed using both electrochemical polarization and immersion techniques. The temperature interval of this study was 600°C to 900°C, and the molten salts were 80wt%V2O5-20wt%Na2SO4. Curves of corrosion current density vs temperature obtained by the potentiodynamic studies are reported, as well as the weight loss vs temperature curves from molten salt immersion tests. Both Fe-Si coatings and FeAl40at%+0.1at%B+10vol%Al2O3 showed good behavior against molten salt corrosion. The final results show the potential of these coatings and alloys to solve the high-temperature corrosion in fuel oil-fired electric power units.

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