“School of Nano-Sciences”

Back to Papers Home
Back to Papers of School of Nano-Sciences

Paper   IPM / Nano-Sciences / 14746
School of Nano Science
  Title:   Digital holographic microscopy as a new technique for quantitative measurement of microstructural corrosion in austenitic stainless steel
1.  P. Asgari
2.  Y. Pourvaise
3.  P. Abdollahi
4.  Alireza Moradi
5.  R. Khademi
6.  A. Darudi
  Status:   Published
  Journal: Materials & Design
  Vol.:  125
  Year:  2017
  Pages:   109
  Publisher(s):   Elsevier Ltd.
  Supported by:  IPM
The aim of this paper is to introduce reflective digital holographic microscopy (rDHM) as a new method for quantitative evaluation of corrosion. Despite the commonly-used evaluation methods, rDHM does not require scanning, while it measures the microstructural height profile of the corroded sample surface within a macroscale area. Based on the height profile across the corroded grain boundaries, a quantitative criterion is suggested to distinguish between intergranular and transgranular corrosion. The experimental results show the capability of rDHM to analyse the microstructural corrosion in AISI 304 stainless steel. The presented method can also be applied as a surface characterization method for analysis of a variety of metallurgic effects such as crystal elasticity and crystal orientation.

Download TeX format
back to top
scroll left or right