Growth kinetics of iron boride layers: Dimensional analysis

I. Campos, R. Torres, G. Ramírez, R. Ganem, J. Martínez

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39 Scopus citations

Abstract

Dimensional analysis is presented as a powerful tool in the study of the paste boriding process. In particular, a dimensional method is used to study the growth kinetics of the boride layers FeB and Fe 2 B. Experiments were performed in AISI 1045 steel and AISI M2 steel, to test the suggested model. Samples of 1045 steel were prepared and treated using boron paste thickness of 3-5 mm, at temperatures of 1193, 1223 and 1273 K, with 2, 4 and 6 h of treatment time. The M2 specimens had boron paste thickness of 3 and 4 mm and temperatures of 1223, 1253 and 1273 K for 2 and 6 h. Results indicate that the growth of boron layers obeys power laws of the form y = αx β , where α and β constants are a function of the material and the interface of interest. Validation of the model was carried out using experimental data with an average error percentage of 7.6% for Fe 2 B in 1045 steel, 15.8% for FeB and 3.4% for Fe 2 B in M2 steel.

Original languageEnglish
Pages (from-to)8662-8667
Number of pages6
JournalApplied Surface Science
Volume252
Issue number24
DOIs
StatePublished - 15 Oct 2006

Keywords

  • Boride layers
  • Boriding process
  • Dimensional analysis
  • Growth kinetics

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