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Auger Spectroscopic Analysis of Bioglass Corrosion Films

1976; Wiley; Volume: 59; Issue: 1-2 Linguagem: Inglês

10.1111/j.1151-2916.1976.tb09382.x

1551-2916

A. E. Clark, C. G. Pantano, Larry L. Hench,

Dental Implant Techniques and Outcomes

Auger spectroscopy and ion beam milling were used to determine surface compositional profiles on a series of bioglass implant materials after exposure to simulated body conditions. Four glasses were examined, a soda‐lime‐silica glass and 3 compositions produced by adding 3, 6, and 12 wt% P 2 O 5 to the ternary glass. An SiO 2 ‐rich layer is formed on the surface of all glasses investigated. As P 2 O 5 is added to the bulk composition, a second film rich in Ca and P forms at the SiO 2 ‐rich film‐water interface. The rate of formation of the Ca‐P film increases as the P 2 O 5 content of the bulk glass increases. When glasses are corroded under identical conditions, the thickness of the Ca‐P layer increases as the P 2 O 5 content of the bulk composition is increased.