Premium
Structural Studies on Ni 75 (SnSi) 25 and Ni 75 (SnBi) 25 Alloys
Author(s) -
Shadangi S. K.,
Singh M.,
Panda S. C.,
Bhan S.
Publication year - 1986
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170210713
Subject(s) - isostructural , nickel , ternary operation , solid solution , materials science , bismuth , phase (matter) , crystallography , ternary numeral system , atomic radius , solubility , ternary compound , crystal structure , inorganic chemistry , chemistry , metallurgy , organic chemistry , computer science , programming language
Ternary alloys on the quasi‐binary system Ni 3 Sn(r) in equilibrium condition. It has been observed that these phases undergo transformations at high temperatures but upto 500 °C room temperature modifications are stable. The two phases do not have any appreciable solid solubility in either of them. The phase Ni 3 Si(r) crystallizes in to Cu 3 Au (Li 2 ) structure where as Ni 3 Sn(r) is based on c.p.h. structure with a = 5.305 A°, c = 4.254 A°. No new ternary phase has been detected in Ni 3 SnNi 3 Si section. The investigated alloys of the NiSnBi system contain 75 at.% Ni. All the ternary alloys show simultaneous occurrence of three phases, namely Ni 3 Sn(r), NiBi and Ni(Sn) in equilibrium state. The phase NiBi has NiAs(B8) type of structure. Due to non‐existence of isostructural phases in the two binary systems (NiSn and NiBi), single solid solution phases are not formed. Widely differing atomic sizes of nickel and bismuth atoms restrict the formation of solid solution of bismuth in nickel in contrast to Ni(Sn) where atomic size factor is favourable.