Enhancement of Corrosion Resistance of Type 304 Stainless Steel Through a Novel Thermo-mechanical Surface Treatment

Toppo, Anita; Kaul, R.; Pujar, M. G.; Mudali, U. Kamachi; Kukreja, L. M.

doi:10.1007/s11665-012-0304-2

Cited by 18 publications

(12 citation statements)

References 24 publications

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“…Nanocrystalline structure showed improved pitting resistance as shown by significantly higher pitting potential and decrease in number of pits. Toppo et al [229] used a novel thermo-mechanical surface treatment approach, involving conventional shot blasting followed by laser surface heating to engineer microstructural modification in type 304 austenitic SS. Thermo-mechanical surface treatment resulted in the formation of fine recrystallized grains with some straininduced martensite on the modified surface, and a significant improvement in its resistance against uniform as well as pitting corrosion in deaerated acidified 0.5 M NaCl.…”

Section: Nanocrystalline Stainless Steel Produced By Cavitationmentioning

confidence: 99%

The influence of nanocrystalline structure and processing route on corrosion of stainless steel: A review

2015

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Section: Nanocrystalline Stainless Steel Produced By Cavitationmentioning

confidence: 99%

The influence of nanocrystalline structure and processing route on corrosion of stainless steel: A review

2015

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“…Their chromium content varies from 16 to 28% and nickel content varies from 3.5 to 32% [2]. Actually, chromium protects the metal substrate from uniform and localized corrosion e.g., pitting, crevice, stress corrosion cracking and intergranular corrosion by the creation of insoluble film of protection [3]. Nevertheless, passive films are mainly susceptible to rupture in the presence of chloride anions in seawater resulting in pitting corrosion [4].…”

Section: Introductionmentioning

confidence: 99%

Improvement of the corrosion behavior of AISI 304L stainless steel by deep rolling treatment under cryogenic cooling

Gharbi

Moussa

Rhouma

et al. 2021

Int J Adv Manuf Technol

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The effects of deep rolling parameters; particularly, work speed and cooling conditions (dry and cryogenic) on the surface integrity of AISI 304L machined samples and their further impact on uniform and localized corrosion behavior in chloride environment were experimentally investigated in this work. The electrochemical behavior of machined and deep rolled samples was assessed using cyclic potentiodynamic polarization tests in synthetic seawater. Findings of this study exhibit that grain refinement generated in the surface layers leads to improved corrosion behavior of deep rolled specimens with regard to machining state. In addition, machined samples deep rolled at a speed of 25 m/min, without cooling, showed better corrosion resistance than those processed under cryogenic cooling. However, the application of cryogenic deep rolling at speeds of 75 m/min and 120 m/min significantly enhanced the electrochemical behavior of mechanically treated specimens. It was found that the corrosion behavior of AISI 304L deep rolled components is related to combined factors (surface roughness, strain-induced martensite, microhardness, residual stress). Despite of high amounts of strain-induced martensite that can deteriorate the electrochemical behavior, it was shown that deep rolled specimens under cryogenic cooling with low surface roughness depict better uniform and localized corrosion resistances.

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“…As compared to the bare NiTi, both GO-coated NiTi and GO/Ag-coated NiTi substrates showed lower i p values. The lower values of i p indicates the higher stability of passive film formed on its surface 36 . These supports the corrosion protective barrier of GO-coating and GO/Ag-coating as mentioned previously.…”

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confidence: 99%

Corrosion Resistance of Graphene oxide/Silver Coatings on Ni–Ti alloy and Expression of IL-6 and IL-8 in Human Oral Fibroblasts

Srimaneepong

Rokaya

Thunyakitpisal

et al. 2020

Sci Rep

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Graphene based materials (GBMs) have potentials for dental and medical applications. GBMs may cause changes in the levels of cytokine released in the body. this study aimed to study the corrosion resistance of graphene oxide (Go) and Go/silver (Go/Ag) nanocomposite coated nickel-titanium (niti) alloy by electrophoretic deposition and to access the viability of human pulp fibroblasts, and the interleukin (IL)-6 and IL-8 expression level. The bare and coated NiTi samples were characterized by scanning electron microscope (SeM), energy-dispersive X-ray spectroscopy (eDS), Raman spectroscopy, surface profilometry, and X-ray diffraction (XRD). The corrosion resistance of the bare NiTi and coated NiTi samples were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy in 3.5% NaCl solution. The cell viability of human pulp fibroblasts was accessed by the treated culture medium of the bare NiTi and coated NiTi alloys containing 1% fetal bovine serum. IL-6 and IL-8 expression levels were studied by human enzyme-linked immunosorbent assay (ELISA). Data were analyzed using One-way ANOVA (α = 0.05). Both the GO-coated NiTi and GO/Ag-coated NiTi alloys showed better corrosion resistance, a lower rate of corrosion, and higher protection efficiency than the bare NiTi alloy. The coated NiTi alloys were biocompatible to human pulp fibroblasts and showed upregulation of IL-6 and IL-8 levels. Nickel-titanium (NiTi) alloy is widely used due to the special properties of superelasticity and shape memory. Common biomedical applications of NiTi alloys include vascular stents, staples, catheter guide wires, orthodontic wires, and endodontic instruments. However, NiTi alloy exhibits corrosion attack compared to stainless steel, cobalt-chrome, or β-titanium and it results in Ni and Ti ions release. It was found that a significant release of Ni and Ti ions from dental alloys in corrosive environment is noted although the amount of Ni ions release diminish with time 1. Another study found that Ni leaching occurred after placement of the NiTi orthodontic archwires, bands and brackets and was associated with an increase of the Ni ion concentration in the patient's saliva which lasted for 10 weeks and then decreased slowly 2. These ions can cause foreign body reactions, allergy, and adverse reactions in the human body, such as stomatitis, burning sensation, angular cheilitis, and loss of taste 3,4. Similarly, Ni along with Co and Cr remains the most common metals associated with surgical implant failure due to metal sensitization 5. Therefore, the surface modifications and/or coatings have an important role in surface improvement and reducing the corrosion and body reactions. Although various polymer coatings have been tried on NiTi alloy, there has always difficult in making a successful coatings 6,7. Graphene is a sheet of sp 2 carbon atoms that creates a 2-D hexagonal honeycomb structure 8. Graphene based materials (GBMs) have been used for fabricating various nanocomposite coatings to improve surface and me...

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Enhancement of Corrosion Resistance of Type 304 Stainless Steel Through a Novel Thermo-mechanical Surface Treatment

Cited by 18 publications

References 24 publications

The influence of nanocrystalline structure and processing route on corrosion of stainless steel: A review

The influence of nanocrystalline structure and processing route on corrosion of stainless steel: A review

Improvement of the corrosion behavior of AISI 304L stainless steel by deep rolling treatment under cryogenic cooling

Corrosion Resistance of Graphene oxide/Silver Coatings on Ni–Ti alloy and Expression of IL-6 and IL-8 in Human Oral Fibroblasts

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