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Tic store hydrogen

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Introduction

Gringoz et al. were the first to test substoichiometric titanium carbide for its ability to store hydrogen [11]. They electrochemically stored hydrogen in TiC0.6 but were unable to store hydrogen in TiC0.9. They concluded that the long range ordering of carbon vacancies. In this paper we investigate the nature of hydrogen diffusion in substoichiometric TiC using simulations. Specifically, we examine how well connected the carbon structural vacancies are in TiCx using percolation theory and how many structural carbon vacancies are connected to the surface of TiCx. This work studies the effect of TiC and VC precipitate sizes on hydrogen trapping and embrittlement. Two experimental ferritic HSLA steels containing either TiC or VC carbides for precipitation strengthening are annealed in nitrogen and hydrogen gas. This results in a hydrogen uptake of up to 0.91.

Tic store hydrogen

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