A study on the friction and wear behavior of electroless nip composite coating with the addition of sea shell and nano zno particles

Abstract

Sea shell waste has been increasing in the coastal areas, which is one of the major responsible for carbon dioxide pollution (CO2). Hence utilizing the waste of sea shell in a useful way will have a welcome impact on environment protection. Though tremendous progress has seen in the field of materials science and surface engineering for the past few years, there still remains a challenge in developing a material on the basis of the cost, life and environmental impacts. Sea shell has been the good competitor for utilization due to its low cost, availability, environmental friendly and better mechanical properties. Hence, the present study is focused on investigation of utilization of sea shell particles as reinforcement with electroless NiP coatings for friction and wear applications. Electroless NiP coatings find numerous applications in aerospace, automotive, chemical and petrochemical, food processing, precision engineering and micro-electronics industries by virtue of their wear resistance, coating uniformity, corrosion resistance and ability to coat on a nonconductive surface. Co-deposition of hard particles and solid lubricants into the NiP coating has improved the friction and wear resistance properties of the coating. Hence, the effective combination of hybrid fillers (inorganic and organic) into NiP matrix for tribology application is still in the research arena. Surface coatings with organic and inorganic fillers have attracted much interest due to the synergistic effect from the combined properties of the inorganic (mechanical, electrical, optical and etc) and organic (lubricity, processability, flexibility and etc). The use of inorganic, particularly reinforcing ceramics particles into NiP matrix improves the hardness and wear resistance of the coating on sliding with the other surface newline