ISSN:
1573-4803
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Single crystals of α-Al2O3 were implanted with iron ions at room temperature to fluences ranging from 4×1016 Fe cm−2 to 1×1017 Fe cm−2. The microstructure and composition in the implanted region were examined using analytical electron microscopy techniques. Special emphasis was placed on monitoring the microstructural changes which take place during post-implantation annealing. Clusters of metallic α-Fe were identified in the specimen after implantation to a dose of 1×1017 Fe cm−2. Analytical electron microscopy of implanted specimens annealed in oxygen revealed the redistribution of the implanted iron and the formation of surface precipitates of α-Fe2O3, subsurface precipitates of various forms of spinel, and, in some cases, subsurface precipitates of iron, depending on the annealing temperature. Examination of implanted specimens annealed under reducing conditions revealed the presence of precipitates of α-Fe.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01119757
Permalink
