ISSN: 1546-962X
CODEN: JAIOAD
Published Online: 26 September 2011
Page Count: 10

Mechanical Properties of ASTM A283 Carbon Steel Subjected to the Sulphidation Process

Alexandre da Silva, Cléber
Univ. of Paraná (UFPR),

Aparecido Moreto, Jéferson
Univ. of São Paulo,

Villarino de Castro, Danilo Borges
Univ. of São Paulo,

de Araújo Ponte, Haroldo
Professor, Electrochemistry, Corrosion and Surface Laboratory, Federal Univ. of Paraná (UFPR),

(Received 21 September 2010; accepted 10 August 2011)

Abstract

This work presents a survey of the mechanical properties (hardness and modulus of elasticity), tribology (friction coefficient and wear rate), and metallography analysis of the ASTM A283 carbon steel subjected to the sulphidation process. The samples were submitted to the sulphidation process at an atmosphere with 0.2 % H₂S (hydrogen sulphide) and 98.8 % H₂ (hydrogen gas) for different time (5,10, 20, 60, and 120 min)at 300°C. After exposure to sulphidation environment the growth kinetics was analyzed. The results obtained with the sulphidation process indicate that the ASTM A283 carbon steel follows a parabolic law with a equilibrium constant in terms of pressure Kp = 1.47· × 10⁻¹² g² cm⁻⁴ s⁻¹ for the material analyzed. The experimental results for the hardness and surface modulus of the samples show an increase in the values for the sulphide sample for 120 min.

Keywords:
sulphidation process, protective film, corrosion, erosion–corrosion

Paper ID: JAI103398
DOI: 10.1520/JAI103398
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