Effect of ionic plasma nitriding process on the corrosion and micro-abrasive wear behavior of AISI 316L austenitic and AISI 470 super-ferritic stainless steels

Autor(es)

de Araujo Junior, Elieser ^[1] ; Bandeira, Rafael Marinho ^[2] ; Manfrinato, Marcos Dorigao ^[1] ; Moreto, Jeferson Aparecido ^[3] ; Borges, Roger ^[4] ; Vales, Sandra dos Santos ^[5] ; Suzuki, Paulo Atsushi ^[6] ; Rossino, Luciana Sgarbi ^{[1, 7]}

Afiliação do(s) autor(es)

^[1] Sorocaba Technol Coll FATEC, Sorocaba, SP - Brazil

^[2] Univ Sao Paulo, Sao Carlos Inst Chem, Dept Phys Chem, Sao Carlos, SP - Brazil

^[3] Fed Univ Triangulo Mineiro UFTM, Inst Exact Sci Nat & Educ, Minas Gerais, MG - Brazil

^[4] Fed Univ Parana UFPR, Dept Chem, Curitiba, PR - Brazil

^[5] Fed Univ Sao Carlos UFSCar, Dept Mat Engn, Sao Carlos, SP - Brazil

^[6] Univ Sao Paulo, Engn Sch Lorena, Polo Urboind, Gleba Lorena, SP - Brazil

^[7] Fed Univ Sao Carlos UFSCar, Sorocaba Campi, Sorocaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T; v. 8, n. 2, p. 2180-2191, APR 2019.
• Citações Web of Science: 0

Resumo

The aim of this work was to study the influence of thermochemical treatment of ionic plasma nitriding on the resistance to micro-abrasive wear and to the corrosion process of AISI 316L and AISI 470 stainless steels. The thermochemical treatment was performed at different times and temperatures with a gas mixture of 25% H-2 and 75% N-2. The treated materials were characterized by using optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), microhardness tests, micro-abrasive wear tests (MAWTs) and corrosion tests. The results show an increase in the thickness of the layer formed by increasing treatment time and in the wear resistance of the materials studied. Temperatures exceeding 450 degrees C favor the formation chromium nitrides, which, for being very hard broke making the formed layer brittle decreasing the wear resistance of the material. In addition, the formation of these phases substantially decrease the corrosion resistance of stainless steels. (C) 2019 The Authors. Published by Elsevier B.V. (AU)

• Processo FAPESP: 14/19535-4 - Comparação da resistência ao desgaste e corrosão de aços inox AISI 316L e 470 nitretados a plasma
• Beneficiário: Eliéser de Araújo Junior
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica