Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 21 (2020) 1200–1212 www.materialstoday.com/proceedings 2214-7853© 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of SIXTH INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN COMPOSITE MATERIALS, ICRACM-2019. ICRACM-2019 Corrosion Resistance of Electroless Ni-P-SiC/ Ni-P-TiO 2 -ZrO 2 Nano-Coatings in Paper Mill Bleach Plant Munna Ram a , Manoj Kumar a , A. Ansari a , Sulaxna Sharma b* and Awanish Sharma a * a Department of Physics, Graphic Era Deemed To Be University, Dehradun, India b Department of AS&H, THDC, Institute of Hydropower Engineering and Technology, Tehri, India. *Corresponding Authors: Email: awanishiitr@gmail.com, sulaxnasharma@gmail.com Abstract In present investigation, electroless Ni-P-SiC/Ni-P-TiO 2 -ZrO 2 nano-composite platings have been deposited upon mild steel substrate (AISI 1040). A homogeneous and consistent allocation of SiC, TiO 2 and ZrO 2 nano-particles into EL Ni-P matrix is recognized in as plated and heated (400 0 C) coupons respectively through SEM and EDAX methods. The investigated coupons exhibited resistance against corrosion in order as: 254SMO > SS2205 > Ni-P-TiO 2 -ZrO 2 as-plated > Ni-P-TiO 2 -ZrO 2 heat treated > Ni-P-SiC as-plated > Ni-P-SiC heat treated > SS316L. The corrosion resistance seems too dependent upon Cr, Mo and N content and hence correlate well with the PRE number of the respective alloys. The conventional materials of construction SS 316L are not suitable for both C and D washers. Avesta 254SMO shows immunity to attack in these environments. On the basis of corrosion resistance, mechanical properties and cost comparison, Avesta 254 SMO seems acceptable material for gaseous phase of C and D washers while duplex stainless steel 2205 and Ni-P-SiC/Ni-P-TiO 2 -ZrO 2 as-plated and heated coatings seems acceptable for the other application in these washers. Keywords: Electroless coatings; corrosion; XRD; SEM- EDAX; In-plant. 1. Introduction In the pulp and paper industry bleach plant is considered as the most corrosive section of a paper mill. This prudence is mainly owing to (Cl 2 ) chlorine and its compounds [1, 2] such as (ClO 2 ) chlorine dioxide and (HClO 3 - )