Published 2010 | Version v1
Miscellaneous Open

Investigation of the benzotriazole as addictive for carbon steel phosphating

Creators

  • 1. Universidade Estadual do Centro-Oeste, Guarapuava, PR (Brazil). Dept. de Quimica
  • 2. Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)
  • 3. Universidade de Sao Paulo (POLI/USP), SP (Brazil). Escola Politecnica. Dept. de Engenharia Metalurgica e de Materiais

Description

This work studied the viability of substitution of sodium nitrite (NaNO2) for benzotriazole (BTAH) in the zinc phosphate bath (PZn+NaNO2) for phosphating of carbon steel (SAE 1010). The characterization of the samples was carried out by Scanning Electron Microscopy, Optical Microscopy and X-ray diffraction. The chemical composition was evaluated by Energy Dispersive Spectroscopy. The corrosion behavior of the samples was investigated by Open Circuit Potential, Electrochemical Impedance Spectroscopy and Anodic Potentiodynamic Polarization Curves in a 0.5 mol L-1 NaCl electrolyte. The experimental results showed that the phosphate layer obtained in the solution with benzotriazole (PZn+BTAH) presented better corrosion resistance properties than that obtained in sodium nitrite. The results demonstrated that the sodium nitrite NaNO2 can be replaced by benzotriazole (BTAH) in zinc phosphate baths. (author)

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Additional details

Additional titles

Original title (Portuguese)
Estudo da utilizacao do benzotriazol como aditivo para a fosfatizacao de aco carbono

Publishing Information

Imprint Pagination
9 p.
Report number
INIS-BR--9126

Conference

Title
Brazilian congress on engineering and materials science
Original Conference Title
19. CBECIMAT: Congresso brasileiro de engenharia e ciencia dos materiais
Acronym
19. CBECIMAT
Dates
21-25 Nov 2010
Place
Campos do Jordao, SP (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
42056326
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BENZOTHIAZOLES; CRYSTALLOGRAPHY; DIFFUSE SCATTERING; ELECTRIC CONDUCTIVITY; ELECTRIC IMPEDANCE; ELECTRIC POTENTIAL; ENERGY LOSSES; IONIZING RADIATIONS; OPTICAL MICROSCOPY; SCANNING ELECTRON MICROSCOPY; SODIUM; SODIUM NITRIDES; STRUCTURAL CHEMICAL ANALYSIS; X RADIATION; X-RAY DIFFRACTION
Descriptors DEC
ALKALI METAL COMPOUNDS; ALKALI METALS; AZOLES; COHERENT SCATTERING; DIFFRACTION; ELECTRICAL PROPERTIES; ELECTROMAGNETIC RADIATION; ELECTRON MICROSCOPY; ELEMENTS; HETEROCYCLIC COMPOUNDS; IMPEDANCE; IONIZING RADIATIONS; LOSSES; METALS; MICROSCOPY; NITRIDES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PHYSICAL PROPERTIES; PNICTIDES; RADIATIONS; SCATTERING; SODIUM COMPOUNDS; THIAZOLES