Preparation and Characterization of Ni-diamond Composite Coatings Using Sedimentation Co-deposition Technique Alternative to Conventional Electrodeposition Technique
Hassan, A., Ghayad, I., Maamoun, M., Abdel Hamid, Z., El-Saeed, F., Abdel-Khalek, A. (2021). Preparation and Characterization of Ni-diamond Composite Coatings Using Sedimentation Co-deposition Technique Alternative to Conventional Electrodeposition Technique. EKB Journal Management System, 64(2), 1065-1073. doi: 10.21608/ejchem.2020.33984.2722
AbdAllah Faisal Hassan; Ibrahim Mohamed Ghayad; Maamoun Maamoun; Zeinab Abdel Hamid; Fatma El-Zahraa M El-Saeed; Ahmed Abdel-Khalek. "Preparation and Characterization of Ni-diamond Composite Coatings Using Sedimentation Co-deposition Technique Alternative to Conventional Electrodeposition Technique". EKB Journal Management System, 64, 2, 2021, 1065-1073. doi: 10.21608/ejchem.2020.33984.2722
Hassan, A., Ghayad, I., Maamoun, M., Abdel Hamid, Z., El-Saeed, F., Abdel-Khalek, A. (2021). 'Preparation and Characterization of Ni-diamond Composite Coatings Using Sedimentation Co-deposition Technique Alternative to Conventional Electrodeposition Technique', EKB Journal Management System, 64(2), pp. 1065-1073. doi: 10.21608/ejchem.2020.33984.2722
Hassan, A., Ghayad, I., Maamoun, M., Abdel Hamid, Z., El-Saeed, F., Abdel-Khalek, A. Preparation and Characterization of Ni-diamond Composite Coatings Using Sedimentation Co-deposition Technique Alternative to Conventional Electrodeposition Technique. EKB Journal Management System, 2021; 64(2): 1065-1073. doi: 10.21608/ejchem.2020.33984.2722

Preparation and Characterization of Ni-diamond Composite Coatings Using Sedimentation Co-deposition Technique Alternative to Conventional Electrodeposition Technique

Egyptian Journal of Chemistry
Article 48, Volume 64, Issue 2, February 2021, Pages 1065-1073    PDF (968.91 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2020.33984.2722
Authors
AbdAllah Faisal Hassan1; Ibrahim Mohamed Ghayad* 2; Maamoun Maamoun3; Zeinab Abdel Hamid4; Fatma El-Zahraa M El-Saeed5; Ahmed Abdel-Khalek6
1Central Metallurgical Reseach and Development Institute
2Corrosion Control & Surface Protection Lab., Metals Technology Dept., Central Metallurgical Research and Development Institute
3Central Metallurgical Research and Development Institute
4Central metallurgical research and development institute
5Chemistry Dept. Fac. of Science, Cairo University
6Chemistry Dept., Fac. of Sci., Benisuef University
Abstract
Composite coatings are the techniques involving co-deposition of inert particles with metal/alloy in order to promote the hardness, wear and corrosion resistance of the coatings. Micro crystalline Ni based composite coatings were prepared by conventional electrodeposition method from a Watt's-type electrolyte containing different contents of diamond particles. A modified electro-deposition method called sedimentation co-deposition (SCD) was also used to deposit Ni-diamond composite coatings having more diamond particles in the Ni matrix.
Results show that Ni-diamond composite coating prepared by the SCD method contains quite high content of diamond (67-97%) as evidenced by EDS analysis. In contrary the traditional electrodeposition method shows low content of diamond (≈10-20%). The wear and corrosion resistance of the SCD Ni-diamond coating are markedly decreased in comparison to the conventionally electrodeposited coatings.
Keywords
Composite coatings; conventional electrodeposition; sedimentation co-deposition; corrosion resistance
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