Microcrystalline diamond, MCD) Nano-crystalline diamond, NCD), ultrafine nano-crystalline diamond, UNCD) Coataed Silicon Carbide (SiC) in the Marine

Microcrystalline diamond, MCD) Nano-crystalline diamond, NCD), Ultrafine nano-crystalline diamond, UNCD) Coataed Silicon Carbide (SiC) in the Marine

Diamond coatings, characterized by a cubic crystal structure, exhibit superior thermal, mechanical, and tribological properties, making them highly suitable for applications in harsh environments, including marine systems. In response to the increasing demand for materials that can withstand deep-sea conditions—such as NaCl-induced corrosion, low temperature, and high hydrostatic pressure—recent studies have explored the tribocorrosion behavior of diamond and carbon-based coatings in seawater.

 Experimental findings demonstrate that coatings such as microcrystalline diamond (MCD), nanocrystalline diamond (NCD), and diamond-like carbon (DLC) maintain low friction and wear under both dry and submerged conditions. Mechanisms including surface passivation, graphitization, and tribochemical reactions have been proposed to explain the coatings’ frictional performance. However, limited research has focused on the influence of low temperatures on tribological behavior in seawater. This study addresses this gap by evaluating the performance of three diamond coating types on SiC substrates at 25 °C and 0 °C in seawater. 

The objective is to elucidate temperature-related degradation mechanisms and inform the development of robust diamond-based coatings for marine applications.