On the Reaction of Ammonium Hydrogen Fluoride with Aluminum, Nickel, Chromium and Zircaloy

Abstract

Ammonium hydrogen fluoride (AMHF) is known to be a versatile fluorinating agent and is capable of fluorinating in the solid state various oxides, salts and superconducting YBa₂Cu₃O_6·5+δ oxide. In the present study, the reactivity of AMHF in the solid state up to its melting point with different metals like Al, Cr, Ni and zircaloy is presented. AMHF reacts with Al and Cr metals giving (NH₄)₃AlF₆ and (NH₄)₃CrF₆, respectively. But it does not react with Ni metal. The reaction between zircaloy and AMHF results in the formation of (NH₄)₂ZrF₆.