Synthesis of novel oxide layers on titanium by combination of sputter deposition and micro-arc oxidation techniques

Abstract

A novel coating technique of thin ceramic layer resembling teeth color on titanium (Ti) surface was developed by combination of sputter deposition of metal zirconium (Zr) and subsequent micro-arc oxidation (MAO) treatment. The oxide layer grown by MAO treatment had a porous structure with a thickness of approximately 6 micrometers and was mainly composed of zirconium dioxide (ZrO2) with both tetragonal and monoclinic crystal structures. The surface of the specimen was hardened by this technique, and the hardness of the specimen was significantly larger than that of untreated Ti and MAO-treated Ti without Zr layer. The bonding strength test revealed that fracture occurred inside the oxide layer, indicating that adhesion between the oxide layer and the Ti substrate was sufficiently strong. From these results, this technique has an advantage for the development of novel dental materials with excellent mechanical and aesthetic properties.

Inference of Pure Titanium Micro-arc Oxidation Process on Microstructure of Calcium Phosphate Membrane Layer

“…Reaction process contains a high voltage spark discharge in electrolyte aqueous solution process, it can generate high performance on metal surface, strong ceramic oxide layer [1] through thermal chemical reaction. Elements can be modified in the form of dissolved salt exists in the electrolyte, thus through reaction into [2] the modified membrane layer, is a simple, economic and environmentally friendly preparation of metal ceramic oxide coating on the surface of the technology, which has become a research hotspot of the metal material surface modification technology at home and abroad [3][4][5] .Pure titanium plate as the research object, through the pretreatment technology research, micro-arc oxidation surface modification technology research, and combined with the performance test, analyzing the effect of calcium phosphate membrane layer of different process parameters on the micro-arc oxidation, which provides the basis of the research for medical pure titanium micro-arc oxidation film layer.…”

Surface treatment and modification of metals to add biofunction

“…MAO treatment helps form a porous surface with a biologically active bone-like apatite layer on the Ti-24Nb-4Zr-7.9Sn alloy (TNZS) specimens, which may improve the biological response of MAO-TNZS implants 12) . On the other hand, ZrO2 layer resembling the color of teeth with good mechanical properties was obtained by the combination of sputter deposition of metal zirconium and subsequent MAO treatment 13) . Surface treatments with various combinations of MAO and chemical treatments were performed on zirconium disks to enhance the bioactivity of zirconium 14) .…”

Micro Arc Oxidation of Ti-15Zr-7.5Mo Alloy

“…In the case of pure Zr, ZrO 2 layer with a pore size of 2 μm in maximum were formed. 23) In Ti-15Zr-7.5Mo alloy, Zr in the alloy substrate possibly in uenced the size of pore that is medium between CP Ti and pure Zr.…”