OPTIMIZATION OF ELECTRO LESS OF NICKEL BASE COATING FOR CERMET CUTTING TOOLS SUBSTRATE
Moqdad Jabor†, Nabaa S. Radh†, Manar Assaf Al-Kinani †, Zainab S. Al-Khafaji‡, ‡†
† Collage of Materials Engineering, University of Babylon, Babil/Iraq
‡Al-Furrat Al-Awsat Distribution Foundation, Ministry of Oil, Babylon, Iraq
‡†Department of Building and Construction Technical Engineering, College of Technical Engineering, The Islamic University, 54001, Najaf, Iraq.
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The development of metal deposition processes based on electroless nickel-Phosphor alloy on various surfaces has witnessed a surge in interest among researchers, with many recent applications rendered possible by many excellent characteristics. These coatings have demonstrated promising corrosion and wear resistant properties in recent years and a substantial number of modern technologies have been the most significant in macro-level apps. This paper discusses in detail about different electroless nickel alloy, including brief notes on cermet cutting tools. Modelling of the output parameters and Optimization of coating parameters using response surface methodology (RSM) and desirability function, Central Composite Design(CCD) is used to plan and design of experts. coating electroless nickel-phosphor layer with different phosphor percent (9, 10 and 11) %wt at different coating time (80, 100 and 120) minute at coating temperature 90±1°C. After coating process, morphology and hardness, X- ray diffraction (XRD), Atomic force microscope (AFM) of the deposited layer was studied. The change in microhardness is observed to be quite significant after annealing the deposits at heat treatment temperature (350, 450 and 550) °C for 1h under vacuum. It has been found that Ni–P (9 %wt) higher microhardness.