A thermodynamic assessment of Ni–Sb system

Supplementary measurements of the primary crystalline phases of the Co–Ni–Sb and the Co–Fe–Sb ternary systems

“…The phase ı is formed by the peritectoid transition (A1) +ˇ(Ni 3 Sb) → ı(Ni 3 Sb) starting from the Ni-Sb binary system, as shown in Fig. 5 [26].…”

“…1 and 2, based on the primary crystalline phase (PCP) relationship determined in this study together with the available information from literatures concerning the related binaries [24][25][26][27][28] and ternaries [18]. The primary crystalline phases in the alloys with different compositions deter- mined in this study are summarized in the diagrams of the related liquidus projections.…”

Interfacial reactions in Ni/CoSb3 couples at 450 °C

“…The compositions of the three layers starting from the dark layer adjacent to Ni to the bright layer adjacent to Sb are Ni-28.3 at%Sb, Ni-48.3 at%Sb and Ni-67.4 at%Sb. Based on the Ni-Sb phase diagram [7], they are the Ni 5 Sb 2 phase, NiSb phase and NiSb 2 phase, respectively. Similar results with three reaction layers are observed in the Ni/Sb couples reacted for longer time.…”

“…Furthermore, the compositions of the Ni 3 Sb and the Ni 5 Sb 2 phases are similar and the Ni 5 Sb 2 reaction layer is very thin, so it would be very difficult to distinguish these two phases even if both of them were formed. It should also be mentioned that the structures and identification of the low-temperature Ni 3 Sb phase and the Ni 5 Sb 2 phase are still not clear although there are many studies focusing on the phase transformation in the vicinities of Ni 3 Sb phase [7,[11][12][13][14][15][16].…”

“…The phase information along the three sides of the Co-Ni-Sb isothermal section at 723 K as shown in Fig. 3 is determined from the three constituent binary phase diagrams [7,15,17]. The phase region boundaries of this ternary isothermal section is estimated based on the phase equilibria studies of the ternary Co-Ni-Sb system at various temperatures [12,14,[18][19][20].…”