Research on Mechanical properties of Micro-aro Oxidation Ceramic Coatings on Magnesium

The paper, to explore mechanical properties of magnesium alloy and ceramic coatings by micro-arc oxidation, through measurement of tensile modulus of elasticity of magnesium alloy matrix, three-point bending method to measure the elastic modulus of the ceramic coatings. The results show that: can get magnesium alloy matrix elastic modulus E=50.6GPa, Poisson's ratio ν=0.3, can get micro-arc oxidation ceramic coatings elastic modulus E= 127.4GPa, Poisson's ratio ν=0.3. At the same time studied the relationship elastic modulus of the ceramic coatings with the thickness of the thickness between 20-60μm. The results show that: With the increaseing of the thickness, the ceramic coatings elastic modulus trend to increase.