Structural modifications of alumina implanted with zirconium, copper, and titanium ions.

Studies the microstructural modifications in alumina induced by implantation of zirconium, copper or titanium ion and by postimplantation thermal annealings. Use of grazing incidence x-ray diffraction in thermal annealings; Dependency of lattice formation on the ion implanted; Effects of implantation before annealing; Result of thermal annealings after implantation.