Borides and Tetrahydroborate Compounds

Borides and Tetrahydroborate Compounds.—ZrB2, HfB2, and the mixed diboride TiB2-ZrB2 have been prepared by heating a stoicheiometric mixture of boron and the metal dioxides (1600—1900 C 10 mmHg). The phases of the Hf-B and I f-M-B (M = Mo or W) systems have been studied by X-ray diffraction techniques. 

Gerdau, B. Scharnberg, and H. Winkler, Conference on Hyperfine Interactions in Excited 

Vedrine, D. Belin, and J. P. Besse, Bull. Soc. chim. France, 1972, 76. 

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