Duplex Surface Treatment of an ARMCO Pure Iron by Dehydrated Paste-pack Boriding and Powder-pack Nitriding

Characterization on AISI 316L Stainless Steel; Boriding, Nitriding and Boriding-Nitriding

“…The variety of surface treatment processes in 316L stainless steels permits the formation of hard surfaces, with the intention of improve its performance and to be used widely in the industry [1]; However there are few studies and evidence on results of hard surface formation, obtained by a mixture of dehydrated boron paste, salt nitriding and the combination of both processes [2][3]. This study shows the effect of surface treatments on 316L stainless steel.…”

Effect of thermochemical treatments on the surface hardening of a circular saw blade: A microstructure comparison of nitride layers, boride layers and TiN coating formed on ASTM A1011 steel

“…The compound layer is often composed of ε-Fe3N1+x and γ′-Fe4N nitrides [1]. Likewise, thermochemical boriding of iron alloys allows both single Fe2B and FeB-based polyphases coatings to be obtained and then used mainly to improve surface hardness (up to 2000 HV) and wear resistance of the components for tribological applications [2][3][4][5][6]. Finally, PVD (physical vapour deposition) is the one of the ways of their deposition onto tool steels substrate.…”

Recycling of the Powder-pack Boriding Mixture: Microstructural Characterization of Fe2B Layers on ASTM A36 Steel

“…These phases consist of orthorhombic and tetragonal lattices (body-centered) respectively. One basic advantage of boride layers is that they can reach high hardness values (between 1800-2000 HV), kept at high temperatures [1][2][3][4][5][6][7][8]. In the present study, the microstructure of the single phase layer (Fe2B) and the recycling of the powder-pack boriding mixture until it is no longer possible to form any layers on the surface of the ASTM A36 borided steel have been investigated at 1173 K with exposure time of 2 h by dehydrated paste-pack method.…”