ISSN 2594-5327
59º Congresso anual — Vol. 59 , num. 1 (2004)
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ABNT 1020 construction steel is widely used as mortar reinforcement and small machine parts, but aside good surface properties as high ductility, hardness and wear resistance, its surface is prone to severe corrosion. As is known, Chromium in amounts over 12-13% in the Fe alloys renders them resistance to several corrosive attacks. ABNT 1020 samples were recovered with Chromium film and then bombarded either by nitrogen Ion Beam (IB) or Plasma Immersion Ion Implantation (PIII) to recoil implant Cr atoms in the Fe matrix. Samples treated by 100keV N⁺ IB showed irregular, thin Cr profile, remaining a part of the film on the surface, to about 10nm. Samples treated by 40kV N PIII presented Cr layer of about 18% at., ranging to around 90nm. Cr of the film was implanted in the Fe matrix in an almost flat profile. Results of corrosion test showed good performance of the PIII treated sample. The IB treated sample showed some enhancement over the reference and the only Cr film deposited sample showed no modification on the corrosion behavior as compared to the non-treated reference.
ABNT 1020 construction steel is widely used as mortar reinforcement and small machine parts, but aside good surface properties as high ductility, hardness and wear resistance, its surface is prone to severe corrosion. As is known, Chromium in amounts over 12-13% in the Fe alloys renders them resistance to several corrosive attacks. ABNT 1020 samples were recovered with Chromium film and then bombarded either by nitrogen Ion Beam (IB) or Plasma Immersion Ion Implantation (PIII) to recoil implant Cr atoms in the Fe matrix. Samples treated by 100keV N⁺ IB showed irregular, thin Cr profile, remaining a part of the film on the surface, to about 10nm. Samples treated by 40kV N PIII presented Cr layer of about 18% at., ranging to around 90nm. Cr of the film was implanted in the Fe matrix in an almost flat profile. Results of corrosion test showed good performance of the PIII treated sample. The IB treated sample showed some enhancement over the reference and the only Cr film deposited sample showed no modification on the corrosion behavior as compared to the non-treated reference.
Palavras-chave
corrosion, plasma immersion ion implantation, ABNT 1020
corrosion, plasma immersion ion implantation, ABNT 1020
Como citar
Gomes, G.F.; Ueda, M.; Beloto, A.F.; Nakazato, R.Z.; Reuther, H..
CORROSION ENHANCEMENT OF ABNT 1020 STEEL AFTER CHROMIUM IMPLANTATION BY NITROGEN ION RECOIL,
p. 390-396.
In: 59º Congresso anual,
São Paulo, Brasil,
2004.
ISSN: 2594-5327, DOI 10.5151/2594-5327-3640
