in-situ-synthesis-of-tetragonal-zirconia-incorporated-alumina-coating-on-ti6al7nb-alloy-by-micro-arc-oxidation-process==>>in-situ-synthesis-of-tetragonal-zirconia-incorporated-alumina-coating-on-ti6al7nb-alloy-by-micro-arc-oxidation-processhttps://indexive.com/uploads/papers/pap_indexive15945622922147483647.pdf