Sol-gel coatings, a safe alternative to chrome plating

Since the beginning of the 20th century, hexavalent chromium derivates have been used to prevent corrosion and to improve the adherence of further coatings on zinc, magnesium, steel and aluminum alloys. Chromium (VI), or hexavalent chromium, is one of the most stable oxidation states of chromium. It very seldom occurs in nature and most hexavalent… Continue reading Sol-gel coatings, a safe alternative to chrome plating

Sol-gel biomedical applications: Hydroxyapatite, bone repair

Hydroxyapatite – Ca5(OH)(PO4)3–  is a complex phosphate of calcium that has chemical and structural resemblance to bone [1]. Thanks to these properties similar to bone and teeth, hydroxyapatite is commonly used for tissue repair. Hydroxyapatite has been widely used for bone defects reparation in dentistry and orthopedics, tooth replacement, alveolar ridges augmentation or and maxillofacial… Continue reading Sol-gel biomedical applications: Hydroxyapatite, bone repair