The diffusion boriding process allows to increase the abrasion and corrosion resistance of majority steel grades. aim this study was determine influence chemical composition substrate various grades on microstructure boride coatings produced using two methods: pack cementation EKABOR-2 paste-pack EKABOR-PASTE tool structural steels:. processes were carried out at 1000oC in an argon atmosphere f...

NiCr alloys with different components were obtained by pack chromation and homogenization heat treatment of octet Ni lattice. The microstructure, alloy composition, microhardness quasi-static compression properties the lattice tested. results showed that after treatment, had an austenitic structure uniform composition. Compared pure nickel lattice, microhardness, compressive strength, elastic m...

Aluminide coating is prepared on K438 Ni-based superalloy by pack cementation. The hot corrosion test of as-received and pre-oxidation aluminide in Na 2 SO 4 salt are carried out at 1050°C. morphologies, phase composition, products characterized XRD, SEM, EDS, TEM. conclusion that the has excellent properties. After corrosion, oxide scale thinnest maintains good integrity. However, fluctuates g...

The boronizing of a tungsten heavy alloy containing Ni and Fe as the major alloying elements were performed in the present study to increase its surface hardening. Pack cementation method was employed as a well-known, successful solid-state process for boronizing. The coating treatment was accomplished at different temperatures of 1000, 1050 and 1100°C for 6 and 9 hours. The formation of tu...

Long–term stability and oxidation resistance of AISI 439 ferritic stainless steel used as interconnects in solid oxide fuel cells can be improved by use of a protective coating. In this study the pack cementation method was employed to coat AISI 439 ferritic stainless steel with manganese. Isothermal oxidation was conducted at 800 ºC for 200 hours in static air to investigate the role of coatin...