Rust Preventive Properties by Using Polarization Curve Measurement on the Metal Coated with the Rust Preventive Oil

Iwashima, Daisuke; Hirata, Sayaka; Nagase, Naoki; Hatakeyama, Masahiko; Sunada, Satoshi

doi:10.2320/matertrans.maw201417

Cited by 5 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Iwashima in our laboratory also reported similar results. 11,12) Present experiments were also in good agreement with theirs. At the beginning, surfactant molecules contained in a rust preventive oil applied to a specimen surface are aligned along the interface between a water screen and a rust preventive oil.…”

Section: Methodssupporting

confidence: 88%

The Effect of Base Oil Viscosity on the Corrosion Preventive Properties of the Rust Preventive Oils

et al. 2022

Self Cite

View full text Add to dashboard Cite

FeCuC sintered steel is prone to rust, therefore rust preventive oil is used for storage. These rust preventive oils generally have a problem of reduced workability due to stickiness caused by high viscosity. However, few electrochemical studies have been conducted on the correlation between viscosity and corrosion resistance. Therefore, in this study, we investigated the effect of the base oil viscosity on the corrosion resistance of rust preventive oil by changing the base oil viscosity.As an experimental method, electrochemical measurements were carried out using the water screen test established in our laboratory, which can quantitatively evaluate the rust preventing ability. According to the polarization curves measurements, corrosion current density I corr is reduced by coating the rust preventive oil. It showed about 100,000 times better corrosion resistance with and without rust preventive oil. While, almost no difference in rust preventive ability was confirmed due to the difference in base oil viscosity. According to the results of the open circuit potential, the time required for the potential of FeCuC sintered steel to saturate was 505 ks for low viscosity, 651 ks for medium viscosity, and 340 ks for high viscosity. Therefore, it was found that there is no correlation between the time until rust occurs and the viscosity of the oil film. It was also found that the effects of the additives were fully exerted even if the oil viscosities were different. Therefore, the problem of reduced workability due to stickiness can be solved by using low viscosity base oil.

show abstract

Section: Methodssupporting

confidence: 88%

The Effect of Base Oil Viscosity on the Corrosion Preventive Properties of the Rust Preventive Oils

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a result, the ability for rust prevention can be measured quantitatively. The aim of this study, therefore, is to evaluate the rust prevention ability of three kinds of representative rust prevention oils by using this newly-developed measuring method 9) .…”

Section: Introductionmentioning

confidence: 99%

Study Of Rust Preventive Characteristics Of Rust Preventive Oil From Polarization Curve Measurement

Iwashima¹,

Ejiri²,

Nagase³

et al. 2015

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

Fe-Cu-C sintered steels are widely used as powder materials, because of its small volumetric shrinkage. However, Cu, which acts as cathode enhance formation of rust Fe 2 O 3 ·xH 2 O during fabrication. To prevent formation of Fe 2 O 3 ·xH 2 O rust preventive oils are widely used. High viscosity of those rust preventive oils decrease workability. While, low viscosity degrade rust preventive performance. Therefore, it is necessary to develop new rust preventive oils with contradictory properties of low viscosity and superior rust prevention. In this study, we developed technique to quantitatively evaluate rust prevention ability by measuring polarization curve through thin corrosive solution on Fe-Cu-C sintered steels coated with rust preventive oils. The electrochemical measurements were carried out in corrosive solution of 0.35 mass % NaCl. Using a double capillary was added dropwise to the specimen. From the experimental, it is possible to evaluate the corrosion rate quantitatively in the surface of specimen, which was coated with rust preventive oil through thin corrosive solution. From the measurement results, Corrosion rate is reduced by coating the rust preventive oil. Especially, corrosion rate of the specimen coated with oil that showed best performance indicated 10000 times better than that of without oil ones. Zn addition negative correlation between corrosion rate and period of potential oscillation.Keywords: sintered steel, polarization curve, rust preventive oil Spiekane stale Fe-Cu-C są szeroko stosowane jako materiały proszkowe, ze względu na mały skurcz objętościowy. Jednak miedź, która zachowuje się jak katoda, wpływa na zwiększone powstawanie rdzy Fe 2 O 3 ·xH 2 O w procesie wytwarzania stali. Aby zapobiec tworzeniu się Fe 2 O 3 ·xH 2 O stosuje się oleje ochronne. Jednak wysoka lepkość olejów zmniejsza ich urabialność, natomiast niska lepkość zmniejsza ich właściwości ochronne. Z tych względów konieczne jest opracowanie nowego typu olejów przeciwrdzewnych charakteryzujących się zarówno niską lepkością jak i dobrymi właściwościami ochronnymi. W niniejszej pracy opracowano metodę ilościowej oceny właściwości ochronnych olejów za pomocą pomiaru krzywej polaryzacji poprzez cienką warstwę roztworu korozyjnego na spiekanych stalach Fe-Cu-C pokrytych olejami ochronnymi. Pomiary elektrochemiczne zostały przeprowadzone w roztworze korozyjnym NaCl (0,35 %wag.). Roztwór został naniesiony na próbkę za pomocą kapilary. Na podstawie wyników eksperymentalnych można ilościowo oszacować szybkość korozji zachodzącej na powierzchni próbki. Badania wykazały, że olej ochronny zmniejsza szybkość korozji. Olej dla którego otrzymano najlepsze wyniki wykazał poprawę właściwości ochronnych 10000 krotnie w porównaniu z próbkami bez oleju. Dodatkowo stwierdzono korelację pomiędzy szybkością korozji a okresem oscylacji potencjału.

show abstract

“…In addition, Nagase and his colleagues reported the results of water semi-immersion rust prevention test etc. on sintered Fe/Cu-based steels and sintered Fe/Ni-based steels under three oil conditions using rust preventive oil, press processing oil and mineral oil [7].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Resistance of the Sintered Fe-Cu-C, Fe-Cu-Ni-Mo-C and Fe-Cr-Mo-C Alloys Coated with a Rust Preventive Oil

Sunada

Hatakeyama

Hibino

et al. 2020

MSF

Self Cite

View full text Add to dashboard Cite

show abstract

Rust Preventive Properties by Using Polarization Curve Measurement on the Metal Coated with the Rust Preventive Oil

Cited by 5 publications

References 7 publications

The Effect of Base Oil Viscosity on the Corrosion Preventive Properties of the Rust Preventive Oils

The Effect of Base Oil Viscosity on the Corrosion Preventive Properties of the Rust Preventive Oils

Study Of Rust Preventive Characteristics Of Rust Preventive Oil From Polarization Curve Measurement

Corrosion Resistance of the Sintered Fe-Cu-C, Fe-Cu-Ni-Mo-C and Fe-Cr-Mo-C Alloys Coated with a Rust Preventive Oil

Contact Info

Product

Resources

About