In vitro corrosion resistance of orthodontic super stainless steel wire. The effects of stress relieving heat-treatment

Keun Taek Oh, ChungJu Hwang, Yong Soo Park, Kyoung Nam Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Generally, orthodontic stainless steel wires are made from 18-8 stainless steels, but because of their low resistance to localized corrosion, corrosion can still occur easily in the oral cavity. Therefore for the present study, rectangular wire was produced experimentally with super stainless steel (SR-50A), which then underwent stress relieving heat-treatment in air, argon, or vacuum, at 500°C, for 6 min, followed finally by either quenching or furnace cooling. The corrosion resistance and ion release properties of the wires were investigated. SR-50A exhibited a low current density of about 1 μA/cm2 and a stable passive region in artificial saliva. Meanwhile, the comparative wires displayed a high current density because of the pitting that occurred above the breakdown potential. SR-50A heat-treated in either vacuum or argon demonstrated high corrosion resistance and a low ion release rate irrespective of the cooling method, but the SR-50A heat-treated in air exhibited low corrosion resistance. The comparative wires, heat-treated in air or quenched, showed very low corrosion resistance and a high ion release rate due to their porous and nonprotective film. SR-50A was less sensitive to the heat-treatment conditions than the comparative wires, and further was able to inhibit the release of metallic ions in the oral cavity. Therefore, these properties of SR-50A are considered to satisfy all the requirements for the safe application of orthodontic wire.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume149
Issue number9
DOIs
Publication statusPublished - 2002 Sep 1

Fingerprint

stress relieving
Stress relief
Stainless Steel
corrosion resistance
Corrosion resistance
stainless steels
heat treatment
Stainless steel
Heat treatment
wire
Wire
Ions
Argon
heat
quenching (cooling)
air
corrosion
ions
Current density
Air

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry
  • Electrochemistry

Cite this

@article{cf5a34510666499b93e46f6905dd37b1,
title = "In vitro corrosion resistance of orthodontic super stainless steel wire. The effects of stress relieving heat-treatment",
abstract = "Generally, orthodontic stainless steel wires are made from 18-8 stainless steels, but because of their low resistance to localized corrosion, corrosion can still occur easily in the oral cavity. Therefore for the present study, rectangular wire was produced experimentally with super stainless steel (SR-50A), which then underwent stress relieving heat-treatment in air, argon, or vacuum, at 500°C, for 6 min, followed finally by either quenching or furnace cooling. The corrosion resistance and ion release properties of the wires were investigated. SR-50A exhibited a low current density of about 1 μA/cm2 and a stable passive region in artificial saliva. Meanwhile, the comparative wires displayed a high current density because of the pitting that occurred above the breakdown potential. SR-50A heat-treated in either vacuum or argon demonstrated high corrosion resistance and a low ion release rate irrespective of the cooling method, but the SR-50A heat-treated in air exhibited low corrosion resistance. The comparative wires, heat-treated in air or quenched, showed very low corrosion resistance and a high ion release rate due to their porous and nonprotective film. SR-50A was less sensitive to the heat-treatment conditions than the comparative wires, and further was able to inhibit the release of metallic ions in the oral cavity. Therefore, these properties of SR-50A are considered to satisfy all the requirements for the safe application of orthodontic wire.",
author = "Oh, {Keun Taek} and ChungJu Hwang and Park, {Yong Soo} and Kim, {Kyoung Nam}",
year = "2002",
month = "9",
day = "1",
doi = "10.1149/1.1497983",
language = "English",
volume = "149",
journal = "Journal of the Electrochemical Society",
issn = "0013-4651",
publisher = "Electrochemical Society, Inc.",
number = "9",

}

In vitro corrosion resistance of orthodontic super stainless steel wire. The effects of stress relieving heat-treatment. / Oh, Keun Taek; Hwang, ChungJu; Park, Yong Soo; Kim, Kyoung Nam.

In: Journal of the Electrochemical Society, Vol. 149, No. 9, 01.09.2002.

Research output: Contribution to journalArticle

TY - JOUR

T1 - In vitro corrosion resistance of orthodontic super stainless steel wire. The effects of stress relieving heat-treatment

AU - Oh, Keun Taek

AU - Hwang, ChungJu

AU - Park, Yong Soo

AU - Kim, Kyoung Nam

PY - 2002/9/1

Y1 - 2002/9/1

N2 - Generally, orthodontic stainless steel wires are made from 18-8 stainless steels, but because of their low resistance to localized corrosion, corrosion can still occur easily in the oral cavity. Therefore for the present study, rectangular wire was produced experimentally with super stainless steel (SR-50A), which then underwent stress relieving heat-treatment in air, argon, or vacuum, at 500°C, for 6 min, followed finally by either quenching or furnace cooling. The corrosion resistance and ion release properties of the wires were investigated. SR-50A exhibited a low current density of about 1 μA/cm2 and a stable passive region in artificial saliva. Meanwhile, the comparative wires displayed a high current density because of the pitting that occurred above the breakdown potential. SR-50A heat-treated in either vacuum or argon demonstrated high corrosion resistance and a low ion release rate irrespective of the cooling method, but the SR-50A heat-treated in air exhibited low corrosion resistance. The comparative wires, heat-treated in air or quenched, showed very low corrosion resistance and a high ion release rate due to their porous and nonprotective film. SR-50A was less sensitive to the heat-treatment conditions than the comparative wires, and further was able to inhibit the release of metallic ions in the oral cavity. Therefore, these properties of SR-50A are considered to satisfy all the requirements for the safe application of orthodontic wire.

AB - Generally, orthodontic stainless steel wires are made from 18-8 stainless steels, but because of their low resistance to localized corrosion, corrosion can still occur easily in the oral cavity. Therefore for the present study, rectangular wire was produced experimentally with super stainless steel (SR-50A), which then underwent stress relieving heat-treatment in air, argon, or vacuum, at 500°C, for 6 min, followed finally by either quenching or furnace cooling. The corrosion resistance and ion release properties of the wires were investigated. SR-50A exhibited a low current density of about 1 μA/cm2 and a stable passive region in artificial saliva. Meanwhile, the comparative wires displayed a high current density because of the pitting that occurred above the breakdown potential. SR-50A heat-treated in either vacuum or argon demonstrated high corrosion resistance and a low ion release rate irrespective of the cooling method, but the SR-50A heat-treated in air exhibited low corrosion resistance. The comparative wires, heat-treated in air or quenched, showed very low corrosion resistance and a high ion release rate due to their porous and nonprotective film. SR-50A was less sensitive to the heat-treatment conditions than the comparative wires, and further was able to inhibit the release of metallic ions in the oral cavity. Therefore, these properties of SR-50A are considered to satisfy all the requirements for the safe application of orthodontic wire.

UR - http://www.scopus.com/inward/record.url?scp=0036749302&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036749302&partnerID=8YFLogxK

U2 - 10.1149/1.1497983

DO - 10.1149/1.1497983

M3 - Article

AN - SCOPUS:0036749302

VL - 149

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

SN - 0013-4651

IS - 9

ER -