Abstract
The microstructure of Nd₁₇Fe_75-xTi_xB₈ (0<x≤1.89) compound was investigated by using scanning electron microscopy and Mössbauer spectroscopy. It was shown that the Ti addition participates in three processes: (i) solubility in hard magnetic Nd₂Fe₁₄B-phase with a strong preference of the substitution of the 8j₂ Fe sites, (ii) formation of Ti₂B-phase and (iii) formation of Fe containing X-phase (but not FeTi and Fe₂Ti phases). Ti substitution decreases the magnetic hyperfine field and increases the width of the absorption line at the Fe sites in the Nd₂Fe₁₄B phase.

Key words
intermetallic, microstructure, Mössbauer spectroscopy

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