Etch Pits at Dislocations in Magnesium Single Crystals

Abstract

Etching solutions which can develop etch pits at dislocations in high purity magnesium single crystals have been found. One solution (solution A) which is composed of 10 g of ammonium nitrate and 50 cm³ of water produces etch pits for both aged and fresh dislocations, while another solution (solution B) which consists of 10 g of ammonium chloride and 50 cm³ water makes etch pits only for aged dislocations. Both solutions A and B have been found applicable for any of (0001), {10\bar10}, and {11\bar20} surfaces of the crystals.