Boriding of nickel by the powder-pack method

Influence of laser alloying with boron and niobium on microstructure and properties of Nimonic 80A-alloy

“…However, some processes, widely used for steels such as case-hardening or diffusion carburizing [5,6], were not appropriate for Ni-based alloys because of the very low solubility of carbon in nickel [7]. While such a surface treatment as boriding [8][9][10][11][12][13][14][15][16][17][18][19], nitriding [20][21][22][23][24][25][26][27][28][29][30] as well as physical and chemical vapor deposition [31][32][33] increased the hardness and wear resistance of the considered superalloys.…”

“…Fluidized bed technology was also not proper to boronizing of nickel because the obtained layers were characterized by a relatively low hardness (870 HV) and thickness (35 mm) [18]. Nickel-based alloys could be effectively borided using the powder mixtures without SiC [12][13][14][15]. The boronizing of pure nickel, using a special Ekabor Ni powder, resulted in the formation of thick boride layers (up to 100 mm) of high hardness (1300 HK) [13].…”

Some mechanical properties of borided AISI H13 and 304 steels

“…Boriding can be applied to a wide range of steel alloys including carbon steel, low alloy-steel, tool steel, and stainless steel. In addition, materials such as nickel based alloys, cobalt based alloys, tungsten and niobium can be borided to obtain very high hardness and wear resistance on their surfaces [8][9][10][11]. In particular, boriding can increase the corrosion resistance of low alloy steel to sulfuric, phosphoric, and hydrochloric acids etc.…”

Synthesis of nanocrystalline Ni2B via a solvo-thermal route

“…Several routes have been proposed to synthesize Ni 2 B, i.e., boronizng of pure nickel by the powder-pack method [9,10] and ball milling of element components [11]. To the best of our knowledge, there are hardly any reports on Ni 2 B nanocrystals prepared by solvo-thermal route, which is a great challenge.…”