Development of Chemical Conversion Coating for Blackening of a Grade of Stainless Steel Useful for Fabrication of Optical Devices


  • Instruments Research and Development Establishment (IRDE), DRDO, Dehradun, Uttarakhand, 248008, India
  • Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi, 110054, India


An improved chemical conversion coating process for blackening of a specific type of stainless steel has been developed. In this process a new optimized bath compositions and operating procedures were set-up by using different trial & error methods to get the desired coating. The technique is also developed for the simplicity, and economical aspect than other techniques. Characterization of coating is done in terms of morphology, optical, hardness by using SEM, Spectrophotometer, and Indentation Hardness methods. Sea-water and temperature variations effects on the coated surface are also studied.


Black Oxide Coating, Characterizations, Opto-Mechanical Components, Stainless Steel

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‘Handbook of Stainless Steel by Outokumpu Stainless’ AB, Avesta Research Centre, P.O. Box 74, SE-774 22 Avesta, Sweden, (2013).

A. Guitterez, ;Selection of high strength stainless steel for aerospace, military and other critical applications’; Carpenter Technology Corporation, P.O. Box 14662, United States, (2006).

‘Aluminium Surface Finishing User’s Guide’; by AFSA, South Africa (2004).

P. Meredith and J. Riesz, Photochemistry and Photobiology, 79(2), 211 2004.

Z. Ghasempour and S. M. Rozati, ‘Characterization of nanostructure black coatings for solar collectors’; World Renewable Energy, Congress, Sweden (2011).

S. Jafari and S. M. Rozati, ‘Characterization of black chrome films prepared by electroplating technique’; Renewable Energy, Congress, Sweden (2011).

D. Kopeliovich, ‘Black oxide coating, Substances &Technologies’; Israel (2013).

R. Sola, R. Giovanardi, P. Veronesi and G. Poli, Metallurgical Science and Technology, 29 (2011).

A. Mihailidis, et al., ‘The Coatings in Manufacturing Engineering’; Proceedings of the 7th International Conference, Chalkidiki, Greece (2008).

M. Pasamanik, et al., ‘Green Technology – Transformation of stainless steel surface by electrochemical blackening’; Department of Materials Science & Engineering, IIT, Israel (2009).

J-M. Gosau, Jeremy Barlow, and R. E. Allred, ‘Electrically conductive thermal control coatings for space craft’; Proc. 52nd Int’l SAMPE Symp. and Exhib., Baltimore, MD, June 3-7 (2007).

E. Haddad, ‘Tune-able emittance thin film coatings for thermal control’; MPB Communications, 151 Hymus Boulevard; Montreal, Quebec, Canada (2009).

P. A. Jeeva, S. Karthikeyan and S. Narayanan, International Journal of Cem. Tech. Research, 5(5), 2405 (2013).

Engineering Handbook- Technical Information, by Industrial Press, Inc. of New York (2000).

K. H. Orvis and H. D. Grissino-Mayer, Tree-Ring Resaerch, 58(1/2), 47 (2002).

W.-O. Seo et al., Applied Physics Letters, 104, 133902 (2014).

J. Magee, Carpenter Technology Corporation Reading, Development of type 204Cu SS, a low cost alternate to type 304, PA, USA (2001).

L. Bamoulid, et al., Surface and Coating Technology, 202(20), 5020 (2008).

R. M. Hurd and N. Hackerman, J. Electrochem. Soc., 104(8), 482 (1957).

F. J. Monteiro, F. Oliveira, R. Reis and O. Paiva, Plating & Surface Finishing, 79, 46 (1992).

Gentry, La Salle University, Applications of Aqueous Equilibria (2014).

L. Wegrelius and B. Sjoden, acom, Outokumpu Stainless AB, Avesta Research Centre,Box 74, SE-774 22 Avesta, Sweden, 4 (2004).

W. N. Hussein, Journal of Babylon University/Engineering Sciences, 20 (2012).

C. Q. Jessen. ‘Stainless Steel & Corrosion’, Denmark (2011).

C. P. Dillon, ‘Corrosion Resistance of Stainless Steels’, New York, USA (1995).

H. Moller, E.T. Boshoff, and H. Froneman, The Journal of The South African Institute of Mining and Metallurgy, 106, 585 (2006) 27. U. S., DIBR, Technical Service Center, Colarado, ‘Lab Evaluation of Metalized Coatings for use on ‘Reclamation Infrastructure’, MERL-2012-14.

K. O. Oparaodu and G. C. Okpokwasili, International J. of Env. Bioremediation & Biodegradation, 2(5), 243 (2014).

ASTM (International), Designation: D 2688-05, Standard test method for corrosivity of water in the absence of heat transfer (Weight Loss Method), 2005 30. R. O. Rihan, S. Nesic, Corrosion Science, 2633, 48 (2006).

U. Schulz et al., Applied Optics, 41(16) (2002).

A. Studnicki, J. Szajnar, Archives of Foundry Engineering, 12, 79 (2012).

Z. Guo et al., Surface & Coating Technology, 187, 141 (2004).

L. Qian et al., Applied Physics Letter, 85(7) (2004).

D. M. Kennedy and M. S. J. Hashmi, Journal of Materials Processing Technology, 77, 246 (1998).

N. A. Sakharova, J. V. Fernandes, J. M. Antunes and M. C. Oliveira, International Journal of Solids and Structures, 46, 1095 (2009).


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