Creation of Ni-B/Ni-P electroless coating on the WC particles without surface activator

Authors

  • Ali Mahtab Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad
  • Kamran Amini Department of Mechanical Engineering, Tiran Branch, Islamic Azad University, Isfahan
  • Nader Mohammadian Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad
  • Syed Amirhosein Emami Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad
  • Mohammad Hosein Bina Department of Advanced Materials and New Energies, Iranian Research Organization for Science and Technology, Tehran

DOI:

https://doi.org/10.30544/244347

Keywords:

Ni–B/Ni–P, Coatings, Electroless, WC particles, No surface activator.

Abstract

One of the methods for improving metal-ceramic interface and suppression of agglomeration is the formation of a monolayer electroless coating on the particles. Investigations indicated that Ni-B monolayers should be first formed to develop in the next process an electroless Ni-P coating with the morphology of cauliflower. It was possible to produce a Ni-B layer on WC particles when a bath was heated at a temperature of 95 °C by using sodium borohydride and an appropriate stabilizer. Following this process, the Ni-P electroless coating was deposited on WC particles at 85 °C. In this way, two layers of electroless coating of Ni-B/Ni-P on the WC ceramic particles without using the surface activator were produced successfully. The coating morphology and surface analysis were performed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The results showed that only the degreasing with acetone as a surface preparation of ceramic particles is sufficient to make a Ni-P or Ni-B coating. Electroless Ni-B coating with appropriate adhesion to the surface produces an acceptable surface for the electroless Ni - P coating formation.

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How to Cite

Mahtab, Ali, Kamran Amini, Nader Mohammadian, Syed Amirhosein Emami, and Mohammad Hosein Bina. 2018. “Creation of Ni-B/Ni-P Electroless Coating on the WC Particles Without Surface Activator”. Metallurgical and Materials Engineering 23 (4):347-52. https://doi.org/10.30544/244347.

Issue

Vol. 23 No. 4 (2017)

Section

Technical papers

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