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


Affiliations
1 Instruments Research and Development Establishment (IRDE), DRDO, Dehradun – 248008, Uttarakhand, India
2 Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi - 110054, India
     

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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.

Keywords

Black Oxide Coating, Characterizations, Opto-Mechanical Components, Stainless Steel.
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  • Development of Chemical Conversion Coating for Blackening of a Grade of Stainless Steel Useful for Fabrication of Optical Devices

Abstract Views: 267  |  PDF Views: 2

Authors

Lakhi Ram Chauhan
Instruments Research and Development Establishment (IRDE), DRDO, Dehradun – 248008, Uttarakhand, India
Majar Singh
Instruments Research and Development Establishment (IRDE), DRDO, Dehradun – 248008, Uttarakhand, India
J. K. Bajpai
Instruments Research and Development Establishment (IRDE), DRDO, Dehradun – 248008, Uttarakhand, India
Kshipra Misra
Defence Institute of Physiology and Allied Sciences (DIPAS), DRDO, Delhi - 110054, India
Amit Agarwal
Instruments Research and Development Establishment (IRDE), DRDO, Dehradun – 248008, Uttarakhand, India

Abstract


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.

Keywords


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

References





DOI: https://doi.org/10.18311/jsst%2F2016%2F8548