Mobility Database

PanNoble2026_MB is an atomic mobility database for noble metal alloys, which is compatible with the PanNoble2026_TH thermodynamic database and suitable for the simulation of diffusion-controlled phenomena using the PanDiffusion module, PanEvolution module, and/or PanSolidification module.

Phases

The atomic mobility within the Liquid, Bcc, Fcc, and Hcp solution phases are assessed in this database.

Self-diffusivity of Pure Elements

The color represents the following meaning:

Table 2.1: Assessed self-diffusivity of pure elements with different crystal structures

Assessed Systems

In addition to the assessed self-diffusivities shown above, the impurity diffusion data for all included elements in the current PanNoble2026_MB database are also assessed. In the following, the assessed chemical-diffusivity within the binary and ternary systems for the Bcc, Fcc, and Hcp phases are listed, respectively.

Fcc Phase

Bcc phase

Hcp phase

Database Validation

The simulated concentration profiles of a series of noble metal alloys are shown below to validate the current PanNoble_MB database.

Figure 2.1: Concentration profiles of Cu0.674Au0.326/Ag0.554Au0.446 annealed at 998K for 48h [2011Liu]

Figure 2.2: Concentration profiles of Au0.077Cu0.923/Au0.446Ag0.554 annealed at 998K for 48h [2011Liu]

[2011Liu] Y. Liu, et al., Atomic mobilities and diffusion characteristics for fcc Cu-Ag-Au alloys. Calphad, 2011. 35: p. 314-322.