Abstract

A new system for the in situ observation of the growth rate of iron whiskers grown from ferrous chloride has been developed. The growth rates have been studied by this system. The present results include evidence of a tip growing process, a retarded radial growth compared to the axial growth, and a radial growth rate comparable with the growth rate of the three-dimensional particle. The axial growth rates show the same tendency for the growth temperature as for non-in-situ measurements which were already reported. The present data confirm that the axial growth mechanism of the whisker is due to an impurity enhanced adsorption-limited process.

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