Friction and wear behavior of steam-oxidized ferrous PM compacts

Dry sliding wear behaviour of steel (AISI 1078) after coating with steam treatment and manganese phosphating

“…Several different surface treatments may be used to enhance the tribo-mechanical properties, and wear resistance of the surfaces of the machine components. Among the different available surface treatments, such as steam treatment [5], manganese phosphating [6] is being used in industrial set-ups to enhance the wear and corrosion resistance of sintered iron compacts [7] vastly. Good adhesion, improved wear resistance, high corrosion resistance and low manufacturing costs [8][9][10][11] make phosphate coatings a better choice for the surface treatment of steel.…”

“…The phosphating process could be applied to different substrates of metal, such as steel, cast iron or zinc. Different types of coatings of modified phosphate [2][3][4][5], zinc phosphate [9][10][11][12], iron phosphate [13] and manganese phosphate [14][15][16], are used. High hardness and good corrosion and wear resistance by the manganese phosphate coatings make it a superior choice for tribological applications among the above-mentioned coatings of phosphate [1,17].…”

“…Many pieces of research have proved that steam oxidation on the sintered components supports wear resistance [5,[17][18][19][20][21][22][23]. The oxide layer of blue/black colour, formed on the surface during steam oxidation, improves the hardness and wear resistance of the material.…”

“…The oxide layer of blue/black colour, formed on the surface during steam oxidation, improves the hardness and wear resistance of the material. However, ductility, impact and compressive strength of the material decreases during this process [5].…”