Investigating TiO_(2)-HA-PCL hybrid coating as an efficient corrosion resistant barrier of ZM21 Mg alloy

作     者：Navdeep Singh Uma Batra Kamal Kumar Anil Mahapatro 

作者机构：Department of Metallurgical and Materials EngineeringPunjab Engineering CollegeChandigarh 160012India Department of Mechanical EngineeringPunjab Engineering CollegeChandigarh 160012India Department of Biomedical EngineeringWichita State UniversityWichitaKS 67260United States 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2021年第9卷第2期

页      面：627-646页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：funded under the research grant(File no.EMR/2016/001581)sponsored by SERB DST India 

主　　题：Corrosion resistance TiO_(2)-HA-PCL Contact angle Adhesion strength 

摘      要：Surface modification for improving corrosion resistance of Mg alloys is highly demanded for degradable orthopedic and cardiovascular *** research reports the design and development of TiO_(2)–HA composite and novel TiO_(2)–HA–PCL hybrid coating belonging to the unique class of inorganic organic hybrid with striking features that are explored for the first time in the corrosion resistance of Mg ***–gel dip coating combined with non-solvent induced phase separation is used to create the hybrid ***_(2)–HA–PCL hybrid coating introduces strong hydrogen bonding between TiO_(2)–HA inorganic matrix and PCL organic layer in addition to the Vander wall electrostatic interaction of the later with the Mg substrate which in turn enhance adhesion strength to about 1.5 times of TiO_(2)–HA *** corrosion potentials for TiO_(2)–HA–PCL and TiO_(2)–HA were found to be-0.407 V and-1.017 V(vs Ag/Ag Cl),*** current densities of TiO_(2)–HA–PCL and TiO_(2)–HA were found to be 7.31×10^(-8)A/cm^(2)and 4.03×10^(-4)A/cm^(2)*** corrosion resistance of coatings was confirmed by immersion testing by weight loss,pH changes and H_(2)evolution measurements at interval of 7 days till 28 *** present TiO_(2)–HA–PCL coating in comparison to TiO_(2)–HA coating demonstrate nearly 6%less weight *** outcome of the present work was compared with the similar coatings in recent *** work done ingresses enhancing the corrosion resistance of Mg alloys,which fulfill the dreams of future degradable orthopedic and cardiovascular devices.