On the problem of setting a criterion for pitting resistance of stainless steels

Таранцева, К. Р.; Pakhomov, V. S.

doi:10.1134/s2070205110030123

Cited by 5 publications

(3 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another significant improvement is in pitting corrosion. The maximum pitting corrosion potential E pit observed for the TiZrPdCuSn(Ta,Nb) bulk rods is between 0.3–0.6 V; furthermore, their cathodic corrosion potential E corr is around −0.1 to 0.1 V. [ 49 ] Hence, a significant increase in η pit , the difference between the pitting and cathodic corrosion potential, [ 50 ] can be attained by choosing adequate compositions within the TiZrGe system. Table 2 tabulates the findings from the potentiodynamic polarization curves.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Magnetron Sputtered Non‐Toxic and Precious Element‐Free TiZrGe Metallic Glass Nanofilms with Enhanced Biocorrosion Resistance

Sarac

Mičušík

Pütz

et al. 2022

Adv Materials Inter

View full text Add to dashboard Cite

The chemical composition and structural state of advanced alloys are the decisive factors in optimum biomedical performance. This contribution presents unique Ti-Zr-Ge metallic glass thin-film compositions fabricated by magnetron sputter deposition targeted for nanocoatings for biofouling prevention. The amorphous nanofilms with nanoscale roughness exhibit a large relaxation and supercooled liquid regions as revealed by flash differential scanning calorimetry. Ti68Zr8Ge24 shows the lowest corrosion (0.17 µA cm -2 ) and passivation (1.22 µA cm -2 ) current densities, with the lowest corrosion potential of -0.648 V and long-range stability against pitting, corroborating its excellent performance in phosphate buffer solution at 37 °C. The oxide layer is comprised of TiO2, TiOx and ZrOx, as determined using X-ray photoelectron spectroscopy by short-term ion-etching of the surface layer. The two orders of magnitude increase in the oxide and interface resistance (from 14 to 1257 Ω cm 2 ) along with an order of magnitude decrease in the capacitance parameter of the oxide interface (from 1.402  10 -5 to 1.677  10 -6 S s n cm -2 ) of the same composition is linked to the formation of carbonyl groups and reduction of the native oxide layer during linear sweep voltammetry. 4(21-25 at.%) were produced using magnetron sputter deposition and examined thoroughly using structural, thermal, morphological, compositional and electrochemical methods. Results and Discussion Structural, Thermal, and Optical PropertiesThe amorphous nature of the as-sputtered samples was checked using grazing incidence Xray diffraction (Figure 1a). The broad amorphous diffraction maximum shifts from ~37.8° to ~38.6° as the amount of Ti in the TiNFs increases. Although the second broad hump is barely distinguishable for all the samples (between 65° and 85°), the determination of the peak

show abstract

Section: Resultsmentioning

confidence: 99%

“…furthermore, their cathodic corrosion potential Ecorr is around -0.1 V -0.1 V. [49] Hence, a significant increase in ηpit, the difference between the pitting and cathodic corrosion potential, [50] can be attained by choosing adequate compositions within the Ti-Zr-Ge system.…”

Section: Electrochemical Analyses -Experimentalmentioning

confidence: 99%

Magnetron Sputtered Non‐Toxic and Precious Element‐Free TiZrGe Metallic Glass Nanofilms with Enhanced Biocorrosion Resistance

Sarac

Mičušík

Pütz

et al. 2022

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…moting erosive removal of a passive film, it may be predicted that the corrosion resistance of steel under operating conditions will be higher [7][8][9][10].…”

mentioning

confidence: 99%

Study of Equipment Corrosion Resistance in the Production of Potash by a Halurgical Method

Таранцева

Firsova

Palicheva³

2015

Chem Petrol Eng

Self Cite

View full text Add to dashboard Cite

The problem of equipment corrosion in halurgical production of potash has existed from the time of generation of this industry. In 1927 in a bulletin about the development of the potassium industry in Germany and France Rice and Davis [1] provided data about a requirement for replacing equipment for dissolving ore every three years. Loss due to corrosion (in equipment depreciation) comprised up to one third of the final product's cost. In a handbook [2], there are data about a requirement for performing major overhaul of equipment after each 8460 h of operation with replacement of the main parts of equipment, and this ultimately leads to an increase in potash cost. Thus, the task of improving corrosion resistance of equipment in potash production remains important.The production process for preparing potash by a halurgical method consists of extracting soluble substance from solid material (sylvinite ore) by means of a solvent (mother liquor). The method is based on combined dissolution of potassium chloride (KCl) and sodium chloride (NaCl) in water at different temperatures. During cooling of saturated solution, KCl crystallizes from it.In halurgical production of potash, a three-stage direct leaching scheme is used. Hot leaching of potassium chloride is performed in two stages with recuperation of halite tailings heat in three stages. The equipment operates by a direct flow scheme and is installed successively. Sylvinite ore is charged into the first equipment, within which there is heating to the mother liquor dissolution temperature. After this, the ore is fed into the second equipment for final dissolution by liquor, whose temperature exceeds 100°C. The residue from the second equipment is loaded by an elevator with a screw dissolver, intended for recuperating halite tailings heat.Working media contain chloride salts and solid phase, causing pitting corrosion and corrosive-erosive wear, respectively (Table 1). The high corrosion and erosion activity of working media is strengthened at high temperature.

show abstract

Pitting Corrosion of Carbon Steel in Chloride-Containing Saturated Ca(OH)2 Solutions

Shaldaev

Malofeeva

Давыдов

2019

Prot Met Phys Chem Surf

View full text Add to dashboard Cite

On the problem of setting a criterion for pitting resistance of stainless steels

Cited by 5 publications

References 29 publications

Magnetron Sputtered Non‐Toxic and Precious Element‐Free TiZrGe Metallic Glass Nanofilms with Enhanced Biocorrosion Resistance

Magnetron Sputtered Non‐Toxic and Precious Element‐Free TiZrGe Metallic Glass Nanofilms with Enhanced Biocorrosion Resistance

Study of Equipment Corrosion Resistance in the Production of Potash by a Halurgical Method

Pitting Corrosion of Carbon Steel in Chloride-Containing Saturated Ca(OH)2 Solutions

Contact Info

Product

Resources

About