Constitution of Binary Alloys

Abstract

not Available.

Metallurgical Consideration on the Calibration Curve for Binary Alloy Samples in Low-pressure Argon Laser-induced Plasma Spectrometry

“…4 In other words, nickel atoms enter into the matrix phase on the copper-rich side, forming a solid solution where nickel atoms are randomly located at the lattice points of copper. On the nickel-rich side, the lattice points of nickel are randomly replaced with copper atoms.…”

“…3,4 Although the vapor pressures of these intermetallic compounds could not be found in literatures, it was expected that they were much less vaporized than pure zinc because of their higher melting points. 3 Therefore, it would be due to a difference in the ablation rate of these phases that the calibration curves in the nickel-zinc binary alloys deviate from a linear relationship.…”

“…3 Nickel-zinc alloys have very different thermal properties, depending on the chemical composition as well as the alloy phases: α phase (Ni solid solution matrix phase), β phase (NiZn intermetallic compound), γ phase (NiZn3 intermetallic compound). 4 Ablated amounts of the alloy samples were observed to be significantly reduced compared to a pure zinc sample, which was attributed to the fact that the alloy formation prevented the volatilization of the zinc atom itself. The calibration curve was estimated using different measuring conditions, having a common feature that a linear correlation was not established but that the relative emission intensity of zinc became smaller at higher zinc contents.…”

“…The thermal properties are similar between copper and nickel, and a single-phase solid solution is formed in the copper-nickel binary alloy, independent of its chemical composition (all-proportional solid solution). 4 We can thus consider that the ablation process in the copper-nickel alloy system would be less dependent on the chemical composition. It is interesting to study how such metallurgical features affect the calibration relations, by comparing copper-nickel and nickel-zinc binary alloys, which would contribute to our understanding of the sampling process in LIPS in more detail.…”

Hardening of gold-based dental casting alloys

“…The gold-zinc phase diagram (18) indicates that several intermetallic compounds are in equilibrium at 400°C. Depending upon the zinc concentration (by weight) these can be:…”