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Metallurgical and Materials Transactions B

, Volume 51, Issue 1, pp 407–411 | Cite as

Comment on the Article “Initial Reactions at the Electrodes of the FFC-Cambridge Process in Molten CaCl2 to Produce Ti” by P.S. Lai, M.L. Hu, Z.F. Qu, L.Z. Gao, C.G. Bai, T.X. Wang, S.F. Zhang, and G.B. Qiu

  • Carsten SchwandtEmail author
Discussion/Reply
  • 122 Downloads

Introduction

A recent publication by Lai et al.[1] presents an assessment of the reaction mechanism in the electro-deoxidation of TiO2 to Ti by means of the FFC-Cambridge process. Therein, Lai et al. put forward an alternative interpretation of the reactions occurring in the early stage of the electro-deoxidation of TiO2 that is in stark contrast to the explanations presented in the pre-existing literature. Their interpretation hinges on the claim that Ti suboxides, such as Ti2O3, are unable to react to CaTiO3 when polarized cathodically in a CaCl2 melt. Herein, this claim is refuted. Several other statements made in the study by Lai et al. as well as in a follow-up study by Hu et al. from the same group[2] are also subjected to a critical analysis and disproven. Overall, the entire new interpretation is shown to be fundamentally flawed.

The FFC-Cambridge process is a comparatively new metallurgical method for the winning of metals and alloys from their pure and mixed oxides.[ 3] In...

Notes

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© The Minerals, Metals & Materials Society and ASM International 2019

Authors and Affiliations

  1. 1.Department of Materials Science and MetallurgyUniversity of NizwaNizwaOman

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