Basic Study on Development of Friction Material Used in Seawater - Friction and Wear Properties of Modified Layer Formed by Rubbing Powder

Electrochemical analysis of corrosion and wear resistance characteristics of stainless steel modified by friction reforming under micro-reciprocating frictional conditions in seawater

“…The methods and conditions used in this paper were determined by repeated trial and error in the authors' previous studies (Han et al, 2015, Ito et al, 2010, Konda et al, 2012, Shima et al, 2009, 2014). These methods make it possible to form the reformed layers on the surface of the substrate for practical use.…”

“…As a result, the material modified with Si powder showed good wear resistance in artificial seawater, depending on the motion form and mating materials (Ito et al, 2010). In addition, the corrosion resistance of the materials modified with Si powder immersed statically in artificial seawater for 76 hours was analyzed (Ito et al, 2010). As a result, about 10 or more corrosion pits having a diameter of about 10 µm were confirmed in all of the materials, but it was shown that there was no significant difference in corrosion resistance due to the reforming treatment state (Ito et al, 2010).…”

“…This study aims to use this technique to develop friction-resistant materials having corrosion and wear resistance in a marine environment. In our previous studies (Ito et al, 2010, Han et al, 2015, the surface of a stainless steel cylinder (as the substrate material) was modified with friction reforming by mainly fine silicon (Si) particles mixed with fine particles made of high-speed steel (HSS), which act as carriers to improve the wear characteristics. Friction coefficients and wear volumes of modified materials under reciprocating wear testing under dry conditions, oil-lubricated conditions, and artificial seawater were analyzed and evaluated (Han et al, 2015).…”

“…Friction coefficients and wear volumes of modified materials under reciprocating wear testing under dry conditions, oil-lubricated conditions, and artificial seawater were analyzed and evaluated (Han et al, 2015). As a result, the material modified with Si powder showed good wear resistance in artificial seawater, depending on the motion form and mating materials (Ito et al, 2010). In addition, the corrosion resistance of the materials modified with Si powder immersed statically in artificial seawater for 76 hours was analyzed (Ito et al, 2010).…”

Thermodynamic Discussion of Various Materials Modified by Friction Reforming for Adaptation to a Marine Environment

“…Friction reforming is a technique in which a modification layer formed with mainly powder is reformed on the surface of the base material, such as a corrosion-resistant material or industrial steel. Table 1 presents a list of major modified materials that have been developed in past studies with the friction reforming technique [2]- [8] . The friction reforming technique requires the selection of a better combination of base material and powder for the further development of modified materials for adaptation to a marine environment.…”