Laser cladding of bioactive glass coatings

Three-dimensional bioactive glass implants fabricated by rapid prototyping based on CO2 laser cladding

“…Divergence with 45S5 precursor glass is reduced at the higher immersion times. Crystallization of bulk bioactive glass 45S5 has been observed to slow the rate of hydroxyapatite surface layer formation in SBF; although extensively crystallized glass-ceramics still show similar bioactivity to that of the parent glasses [18,20,24,35,49,55,60]. Considering the structural changes produced during partial crystallization of glass, bioactivity of the material is presumed to be modified.…”

“…The lower crystallization tendency of S520 bioactive glass, and its smooth behavior around the softening point, along with an acceptable bioactive behavior, makes this glass composition an interesting one to be used in thermal induced processes such as laser cladding [35,42].…”

“…The laser cladding technique with powder feeding is a process increasingly investigated in the biomaterials field for production of two-dimensional (2-D) calcium phosphate and bioactive glass coatings [35][36][37][38][39][40]; even for processing 3-D calcium phosphate parts [41]. The aim of this work was to develop a rapid prototyping method based on the laser cladding technique to create large bioactive glass monoliths of net shape, without a mould.…”

“…In recent years, some laser-assisted techniques have been applied to process bioactive glasses [33][34][35]. The laser cladding technique with powder feeding is a process increasingly investigated in the biomaterials field for production of two-dimensional (2-D) calcium phosphate and bioactive glass coatings [35][36][37][38][39][40]; even for processing 3-D calcium phosphate parts [41].…”

Recent advances in laser surface treatment of titanium alloys

“…Comesaña et al studied the production of this type of coatings using Nd:yttrium aluminum garnet ͑Nd:YAG͒ laser cladding. 11 To achieve a uniform coating it a͒ Electronic mail: juacanbo@doctor.upv.es is important to use a bioglass with a gradual wetting angletemperature evolution. Thermal stresses should also be minimized, and this requires adjusting the thermal expansion coefficient of the material.…”