Corrosion resistance enhancement of SAE 1020 steel after Chromium implantation by nitrogen ion recoil

Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:05:36Z No. of bitstreams: 1 S1516-14392005000400005.pdf: 417271 bytes, checksum: 28e0f9540157285bec292ac9bd4b9fde (MD5) Made available in DSpace on 2013-08-22T19:05:36Z (GMT). No. of bitstreams: 1 S1516-14392005000400005.pdf: 417271 bytes, checksum: 28e0f9540157285bec292ac9bd4b9fde (MD5) Previous issue date: 2005-12-01 Made available in DSpace on 2013-09-30T18:11:07Z (GMT). No. of bitstreams: 2 S1516-14392005000400005.pdf: 417271 bytes, checksum: 28e0f9540157285bec292ac9bd4b9fde (MD5) S1516-14392005000400005.pdf.txt: 10126 bytes, checksum: 546c8befe19179c7a2903352a6b90bd4 (MD5) Previous issue date: 2005-12-01 Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-20T13:27:55Z No. of bitstreams: 2 S1516-14392005000400005.pdf: 417271 bytes, checksum: 28e0f9540157285bec292ac9bd4b9fde (MD5) S1516-14392005000400005.pdf.txt: 10126 bytes, checksum: 546c8befe19179c7a2903352a6b90bd4 (MD5) Made available in DSpace on 2014-05-20T13:27:55Z (GMT). No. of bitstreams: 2 S1516-14392005000400005.pdf: 417271 bytes, checksum: 28e0f9540157285bec292ac9bd4b9fde (MD5) S1516-14392005000400005.pdf.txt: 10126 bytes, checksum: 546c8befe19179c7a2903352a6b90bd4 (MD5) Previous issue date: 2005-12-01 Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) SAE 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 it is known, Chromium in amount over 12%-13% in the Fe alloys renders them resistance to several corrosive attacks. SAE 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 100 keV N+ IB showed irregular, thin Cr profile, remaining a part of the film on the surface, to about 10 nm. Samples treated by 40 kV N PIII presented Cr layer of about 18% at., ranging to around 90 nm. 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 non-treated reference and the only Cr film deposited sample showed no modification on the corrosion behavior as compared to the non-treated reference sample. Instituto Nacional de Pesquisas Espaciais Laboratório de Combustão e Propulsão Science and Technology Analyst INPE LAP Laboratório Associado de Plasma INPE LAP Laboratório Associado de Sensores e Materiais UNESP FEG Depto. de Física e Química Forschungszentrum Rossendorf UNESP FEG Depto. de Física e Química