Liquid titanium solute diffusion measured by pulsed ion-beam melting
- Cite this article as:
- Sanders, P.G., Thompson, M.O., Renk, T.J. et al. Metall and Mat Trans A (2001) 32: 2969. doi:10.1007/s11661-001-0171-1
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The diffusivities of Sn, Mo, Zr, and Hf in liquid Ti were determined by pulsed ion-beam melting of thin liquid layers. Time-resolved optical reflectance and one-dimensional heat-flow simulations were employed to determine the melt duration. The broadening of nearly Gaussian solute concentration-depth profiles was determined ex situ using Rutherford backscattering spectrometry. Solute diffusivities in the range of 5 to 9×10−5 cm2/s were determined at temperatures in the range of 2200 to 2500 K. Calculations of buoyancy and Marangoni convection indicate that convective contamination is unlikely.