A 1000 HOUR TEST OF A CORROSION PRODUCT SEPARATOR UNIT IN A HAYNES ALLOY NO. 25 LOOP CONTAINING MERCURY--TEST G-16

Abstract HAYNES Alloy No. 36 is a cobalt-base alloy having excellent strength at temperatures up to 1800 deg. F. It is the cast modification of wrought HAYNES Alloy No. 25 and has been used successfully in jet engine blading and nozzle vanes. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: Co-17. Producer or source: Haynes Stellite Company.

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HAYNES ALLOY No. 625SQ

Alloy Digest ◽

10.31399/asm.ad.ni0612 ◽

2003 ◽

Vol 52 (8) ◽

Keyword(s):

Grain Size ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Fatigue Resistance ◽

Heat Treating ◽

Temperature Performance ◽

Haynes Alloy

Abstract Haynes 625SQ alloy is a modification of Haynes 625 alloy (see Alloy Digest Ni-354, January 1988) with tighter controls on chemistry and a finer grain size for fatigue resistance up to 680 deg C (1250 deg F). This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance as well as heat treating. Filing Code: Ni-612. Producer or source: Haynes International Inc.

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HAYNES ALLOY No. 263

Alloy Digest ◽

10.31399/asm.ad.ni0352 ◽

1987 ◽

Vol 36 (10) ◽

Keyword(s):

Corrosion Resistance ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Base Alloy ◽

Heat Treating ◽

Nickel Base Alloy ◽

Nickel Base ◽

Haynes Alloy

Abstract HAYNES alloy No. 263 is a vacuum-melted and electroflux-refined high-temperature nickel-base alloy. It has good formability and weldability. It was developed by Rolls Royce. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep, and deformation. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-352. Producer or source: Haynes International Inc..

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HAYNES ALLOY 75

Alloy Digest ◽

10.31399/asm.ad.ni0557 ◽

1999 ◽

Vol 48 (7) ◽

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Heat Treating ◽

Turbine Engines ◽

Chromium Alloy ◽

Gas Turbine Engines ◽

Typical Application ◽

Good Oxidation Resistance ◽

Temperature Performance ◽

Haynes Alloy

Abstract Haynes alloy 75 is an 80 nickel-20 chromium alloy with both good oxidation resistance and good mechanical properties at high temperatures. It is amenable to all forms of fabrication and welding. A typical application for sheet metal is fabrications in gas turbine engines. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming and heat treating. Filing Code: Ni-557. Producer or source: Haynes International Inc.

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HAYNES 556 ALLOY FILLER METAL

Alloy Digest ◽

10.31399/asm.ad.ss0782 ◽

2000 ◽

Vol 49 (4) ◽

Keyword(s):

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Oxidation Resistance ◽

Filler Metal ◽

Cobalt Alloy ◽

Nickel Chromium ◽

Iron Nickel ◽

Haynes Alloy ◽

Alloy Filler

Abstract Haynes alloy 556 filler metal is an iron-nickel-chromium-cobalt alloy that combines effective resistance to sulfidizing, carburizing, and chlorine-bearing environments with excellent strength and oxidation resistance at high temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on corrosion resistance as well as joining. Filing Code: SS-782. Producer or source: Haynes International Inc.

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ANALYSIS OF CORROSION PRODUCT RETRIEVED FROM THE PRIMARY TANK WALL IN THE ANNULUS OF TANK 241-AY-102

10.2172/812342 ◽

2003 ◽

Author(s):

R P ANANTATMULA

Keyword(s):

Corrosion Product ◽

Tank Wall

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Effect of Oxide Scale Microstructure on Atmospheric Corrosion Behavior of Hot Rolled Steel Strip

Coatings ◽

10.3390/coatings11050517 ◽

2021 ◽

Vol 11 (5) ◽

pp. 517

Author(s):

Bin Sun ◽

Lei Cheng ◽

Chong-Yang Du ◽

Jing-Ke Zhang ◽

Yong-Quan He ◽

...

Keyword(s):

Corrosion Resistance ◽

Oxide Scale ◽

Corrosion Product ◽

Corrosion Behavior ◽

Corrosion Test ◽

Atmospheric Corrosion ◽

Corrosion Mechanism ◽

Type I ◽

Rust Layer ◽

Hot Rolled

The atmospheric corrosion behavior of a hot-rolled strip with four types (I–IV) of oxide scale was investigated using the accelerated wet–dry cycle corrosion test. Corrosion resistance and porosity of oxide scale were studied by potentiometric polarization measurements. Characterization of samples after 80 cycles of the wet–dry corrosion test showed that scale comprised wüstite and magnetite had strongest corrosion resistance. Oxide scale composed of inner magnetite/iron (>70%) and an outer magnetite layer had the weakest corrosion resistance. The corrosion kinetics (weight gain) of each type of oxide scale followed an initial linear and then parabolic (at middle to late corrosion) relationship. This could be predicted by a simple kinetic model which showed good agreement with the experimental results. Analysis of the potentiometric polarization curves, obtained from oxide coated steel electrodes, revealed that the type I oxide scale had the highest porosity, and the corrosion mechanism resulted from the joint effects of electrochemical behavior and the porosity of the oxide scale. In the initial stage of corrosion, the corrosion product nucleated and an outer rust layer formed. As the thickness of outer rust layer increased, the corrosion product developed on the scale defects. An inner rust layer then formed in the localized pits as crack growth of the scale. This attacked the scale and expanded into the substrate during the later stage of corrosion. At this stage, the protective effect of the oxide scale was lost.

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Formation of Iron Sulfides on Carbon Steel in a Specific Cement Grout Designed for Radioactive Waste Repository and Associated Corrosion Mechanisms

Materials ◽

10.3390/ma14133563 ◽

2021 ◽

Vol 14 (13) ◽

pp. 3563

Author(s):

Mathieu Robineau ◽

Valérie Deydier ◽

Didier Crusset ◽

Alexandre Bellefleur ◽

Delphine Neff ◽

...

Keyword(s):

Carbon Steel ◽

Radioactive Waste ◽

Corrosion Product ◽

Product Layer ◽

Cement Grout ◽

Radioactive Waste Disposal ◽

Sulfide Concentration ◽

Iron Sulfides ◽

Corrosion Mechanisms ◽

A Minor

Carbon steel coupons were buried in a specific low-pH cement grout designed for radioactive waste disposal and left 6 months in anoxic conditions at 80 °C. The corrosion product layers were analyzed by µ-Raman spectroscopy, XRD, and SEM. They proved to be mainly composed of iron sulfides, with magnetite as a minor phase, mixed with components of the grout. Average corrosion rates were estimated by weight loss measurements between 3 and 6 µm yr−1. Corrosion profiles revealed local degradations with a depth up to 10 µm. It is assumed that the heterogeneity of the corrosion product layer, mainly composed of conductive compounds (FeS, Fe3S4, and Fe3O4), promotes the persistence of corrosion cells that may lead to locally aggravated degradations of the metal. New cement grouts, characterized by a slightly higher pH and a lower sulfide concentration, should then be designed for the considered application.

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Changes in properties of tar obtained during underground coal gasification process

International Journal of Coal Science & Technology ◽

10.1007/s40789-021-00440-6 ◽

2021 ◽

Author(s):

Marian Wiatowski ◽

Roksana Muzyka ◽

Krzysztof Kapusta ◽

Maciej Chrubasik

Keyword(s):

Coal Gasification ◽

Coal Tar ◽

Liquid Product ◽

Coke Oven ◽

Underground Coal Gasification ◽

Gasification Process ◽

Dominant Component ◽

Process Gas ◽

High Volatility ◽

Product Separator

AbstractIn this study, the composition of tars collected during a six-day underground coal gasification (UCG) test at the experimental mine ‘Barbara’ in Poland in 2013 was examined. During the test, tar samples were taken every day from the liquid product separator and analysed by the methods used for testing properties of typical coke oven (coal) tar. The obtained results were compared with each other and with the data for coal tar. As gasification progressed, a decreasing trend in the water content and an increasing trend in the ash content were observed. The tars tested were characterized by large changes in the residue after coking and content of parts insoluble in toluene and by smaller fluctuations in the content of parts insoluble in quinoline. All tested samples were characterized by very high distillation losses, while for samples starting from the third day of gasification, a clear decrease in losses was visible. A chromatographic analysis showed that there were no major differences in composition between the tested tars and that none of the tar had a dominant component such as naphthalene in coal tar. The content of polycyclic aromatic hydrocarbons (PAHs) in UCG tars is several times lower than that in coal tar. No light monoaromatic hydrocarbons (benzene, toluene, ethylbenzene and xylenes—BTEX) were found in the analysed tars, which results from the fact that these compounds, due to their high volatility, did not separate from the process gas in the liquid product separator.

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