Formation and transformation of Mg(OH)2 in anodic coating using FTIR mapping

Tribochemical Behavior of Pure Magnesium During Sliding Friction

“…Figure 8 shows the FT-IR spectrum of wear oxide debris collected after 1000 cycles at a load of 1 N, which shows strong peaks at 3442, 1634, 558 cm −1 . Specifically, the OH − showed the strongest absorption bands at 3442 cm −1 , 1634 cm −1 in Mg(OH) 2 [17], bands of CO 3 2− in MgCO 3 were observed at 1559 cm −1 , 1541 cm −1 [18], while the absorption bands of O 2− in MgO was at 558 cm −1 [19]. Therefore, the oxide layer or the tribochemical product was expected to be MgCO 3 , Mg(OH) 2 , MgO.…”

Insights into the impurities of Bi2WO6 synthesized using the hydrothermal method

“…The nanomaterials synthesized at pH value greater than 7.01 has no obvious peaks between 3400 cm À1 and 3800 cm À1 , which are the characteristic peaks of O-H. [50][51][52] It is believed that most Bi(OH) 3 was converted to Bi 2 O 3 , which is the main impurity at pH $ 9.01.…”

Microstructure and corrosion resistance of ultrasonic micro-arc oxidation biocoatings on magnesium alloy

“…The corrosion resistance was improved greatly; however, MAO coatings still exhibited poor corrosion resistance [15]. The porous microstructure might offer a beneficial surrounding for cells [16][17][18][19], but MgO exhibited poor biological activity. Calcium and phosphorus coatings on magnesium alloy were potential biomaterials [20,21].…”