摘要: The Kataoka‐Yamada model for highly concentrated solid solutions has been used to calculate the microhardness of NaCl‐NaBr, KCl‐KBr, and KBr‐KI systems. extra hardness in mixed crystals is computed from amount hindrance transport ion pairs fluctuating stress field produced by random distribution anions different sizes. theoretical results are very good agreement with available experimental data.