Liquid Titanium Solute Diffusion Measured by Pulsed Ion-Beam Melting
Sanders, P. G.
Thompson, Michael O.
Renk, Tim J.
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CitationSanders, P. G., Michael O. Thompson, Tim J. Renk, and Michael J. Aziz. 2000. Liquid titanium solute diffusion measured by pulsed ion-beam melting. Metallurgical and Materials Transactions A 32(12): 2969-2974.
AbstractThe diffusivities of Sri, 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 X 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.
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