PEO	Plasma Electrolytic Oxidation
PVD	Physical vapor deposition
CVD	Chemical vapor deposition
AC	Alternating current
DC	Direct current
OEM	Optical emission spectroscopy
HA	Hydroxyapatite
SEM	Scanning electron microscope
FESEM	Field emission scanning electron microscope
KOH	Potassium hydroxide
K4P2O7	Potassium pyrophosphate
K3PO4	Potassium triphosphate
SBF	Simulated body fluid
XRD	X-ray diffraction
EDTA	Ethylene diamine tetra acetic acid
PTFE	Poly tetra fluoro ethylene
MoS2	Molybdenum disulfide
ZrO2	Zirconium dioxide
SiO2	Silicon dioxide
TiO2	Titanium dioxide
Si3N4	Silicon nitride
SiC	Silicon carbide
CNT	Carbon nano tube
ZnO	Zinc oxide
KF	Potassium fluoride
K2ZrF6	Potassium hexafluorozirconate
K3PO4·3H2O	Potassium phosphate trihydrate
Ca3(PO4)2	Calcium phosphate
CeO2	Ceria
LST	Laser surface texture
TC	Tungsten carbide
Ra	Average surface roughness
COF	Coefficient of friction
RFMS	Radio frequency magnetron sputtering
CaP	Calcium phosphate
SP	Shot peening
AM	Additive manufacturing