Hydrogen effects on directional solidification of Te-doped cast irons

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作者：
Iowa State Univ, Ames, United States [1 ]
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Metall Mat Trans A Phys Metall Mat Sci | / 2卷 / 496-498期
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Composition effects - Doping (additives) - Graphite - Hydrogen - Interfaces (materials) - Reaction kinetics - Solidification - Tellurium;
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摘要：
Directional solidification experiments showed that small additions of hydrogen have a large effect on the gray-white and white-gray transition velocities of Te-doped cast irons. Hydrogen seemed to reduce compounds of Te, which allowed more Te to remain in the liquid solution and to adsorb on the graphite/liquid iron growth front interfaces, which in turn, reduced the graphite growth kinetics and permitted the growth of white iron to dominate.
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