Corrosion resistance of zirconium alloys in acetic acid media

Malakhova, É. K.; Kuzyukov, A. N.; Meshcheryakov, A. V.

doi:10.1007/bf01149316

Cited by 7 publications

(3 citation statements)

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“…In the production of AA, electrochemical corrosion can occur in iodide‐containing AA media, damaging the fractionation and dehydration columns 25. It is thus expedient to use zirconium alloys 26. In this design, the fractionation and dehydration columns are constructed of zirconium, while the refining column is constructed of 316SS as almost all iodide ion is removed before entering this column.…”

Section: Case Studymentioning

confidence: 99%

Improved energy efficiency in debottlenecking using a fully thermally coupled distillation column

Long

Lee

2011

Asia-Pacific J Chem Eng

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Increasing the throughput of an existing distillation process has received considerable attention due to the higher market demand for products derived therefrom. However, this could create a bottleneck in the column. The main objective of this work is to systematically identify bottlenecks in distillation columns and propose a strategy related to dividing wall column (DWC) use for debottlenecking within the column, as well as for energy saving. To optimize the DWC, the internal recycle flow distribution around the dividing wall was investigated as a primary optimizing variable. Several cases were analyzed to show that use of the DWC is a promising method for debottlenecking, as well as investment cost and energy consumption saving. Copyright © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.

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Section: Case Studymentioning

confidence: 99%

Improved energy efficiency in debottlenecking using a fully thermally coupled distillation column

Long

Lee

2011

Asia-Pacific J Chem Eng

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“…Zirconium is known for its outstanding resistance to chemical and corrosion [27,28]. It is an active metal that reacts with atmospheric oxygen, water, and acids, but the exposed layer of metallic zirconium is immediately covered with a layer of amphoteric zirconium oxide.…”

Section: Introductionmentioning

confidence: 99%

Zirconium Surface Treatment via Chemical Etching

Gołasz,

Kołkowska,

Zieliński

et al. 2023

Materials

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The increased demand for implants that do not pose a threat to patients diagnosed using high-resolution magnetic resonance imaging and concerns arising from titanium allergies require the development of alternative implant materials. One promising concept is a use of zirconium as corrosion-resistant, nontoxic material that is lower in magnetic susceptibility. To achieve this, safe and efficient surface treatment methods of zirconium metal have to be developed. In this study, zirconium samples were treated with fluoride-free and fluoride-containing etching mixtures to determine their effect on the surface of Zr. SEM images were taken to investigate the preliminary effects of the etchants. Then, a second set of experiments was carried out using mixtures of HF-H2SO4 and ammonium persulfate–fluoride salts, as they gave the most promising results in the first trial. SEM images were taken and measurements on roughness, wettability, and atomic composition were made. The results showed an even zirconium surface in APS-fluoride salts, along with the formation of pits (1–3 μm) similar to those found in commercially available implants. There was no significant increase in the roughness of the treated samples. The addition of NO3− ions in the form of KNO3 speeded up etching and promoted pit formation. The HF-H2SO4 mixture was found to give unsatisfying results, as the surface was too rough and the formed pits were too large. It was concluded that etching zirconium in ammonium persulfate and fluoride salts is a promising area of research for the preparation of zirconium implants; however, further research has to be carried out on sandblasted samples.

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“…Acetic acid is widely used in various branches of industry, and the study of corrosion of the metallic equipment in the acetic media is an important task (Davis, 2000;Schweitzer, 2006). Numerous studies on the corrosion of various metals and alloys in the acetic media were conducted in the past years (Malakhova et al, 1995;Nickel Institute, 2016;. Onuchukwu and Oppong-Boachie, 1986; Thirumalaikumar and Jegannathan, 2011; Hassan and Fahmy, 2008;Rafiquee et al, 2007;Ansari and Quraishi, 2011;Allahkaram et al, 2011;Veloz and González, 2002;Amri et al, 2008;Tétreault et al, 1998;Rocca et al, 2004;Turnbull et al, 2003;Lou and Singh, 2010;Singer et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Investigation of the Corrosion Properties of Steel X13 in the Acetic Acid at 20 and 80°с

Мананников¹,

Parshukov²,

Nikolaychuk³

2017

PTQ

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Polarisation curves of stainless steel Х13 in a 5% NaCl + 0.5% CH3COOH + CH3COONa + CO2 (PCO2 = 0.1 МPa) solution at рН 3 and 4 and temperatures 20 and 80°С were obtained by the potentiostatic method. The corrosion-electrochemical characteristics of the steel in these environments were measured. The potential – pH diagrams of system steel X13 – CH3COOH – CO2 – H2O were constructed and the corrosion behaviour of the steel was determined using these diagrams. The passivation of the steel may proceed due to the formation of iron chromite (FeCr2O4) phase layer and of iron oxalate (FeC2O4) polylayer.

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Corrosion resistance of zirconium alloys in acetic acid media

Cited by 7 publications

References 1 publication

Improved energy efficiency in debottlenecking using a fully thermally coupled distillation column

Improved energy efficiency in debottlenecking using a fully thermally coupled distillation column

Zirconium Surface Treatment via Chemical Etching

Experimental and Theoretical Investigation of the Corrosion Properties of Steel X13 in the Acetic Acid at 20 and 80°с

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