Publication Date:
2012-04-15
Description:
Phosphate glasses in the 50 CaO -(50-x) P 2 O 5 -xTi O 2 -1 Al 2 O 3 (x = 5–25 mol%) system were produced and irradiated with low energy density CO 2 laser to melt and crystallize on a hydroxyapatite (HA) ceramic plate for dental filler applications. The laser with 10.6 μm of wavelength is easily absorbed by phosphate and hydroxy groups. The phosphate glasses containing ~15 mol% of titania strongly adhered to the HA plate surface through melting and sintering by the laser irradiation. The coatings after the laser irradiation contained crystalline phases. There was no significant changes in the morphology of the coating containing 15 mol% of TiO 2 on the HA plate even after soaking in 0.1 m M HCl solution for 10 min. This coating was suspected to have good chemical durability. Powders of the glass or glass-ceramic containing 15 mol% of TiO 2 were soaked in distilled water to check their dissolution behavior over the long term. Dissolution from the glass-ceramic was much slower than those from the glass at all points.
Print ISSN:
1546-542X
Electronic ISSN:
1744-7402
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
