There is disclosed a method for producing corrosion and erosion-resistant mixed oxide coatings on a metal substrate, as well as a mixed oxide coating itself. A surface of the substrate metal is oxidised and converted into a first coating compound comprising a primary oxide of that metal by a plasma electrolytic oxidation (PEO) process. One or more secondary oxide compounds comprising oxides of secondary elements not present in conventional alloys of the substrate metals at significant (>2 wt %) levels are added to the first oxide coating. The source of the secondary element(s) is at least one of: i) a soluble salt of the secondary element(s) in the electrolyte; ii) an enrichment of the surface of the substrate metal with secondary element(s) prior to PEO processing; and iii) a suspension of the secondary element(s) or oxide(s) of the secondary element(s) applied to the oxide of the metal after this has been formed by the PEO process.

Corrosion and erosion-resistant mixed oxide coatings for the protection of chemical and plasma process chamber components

The invention relates to a magnesium-containing hydroxyapatite coating on the surface of a medical material. The coating comprises Ca10(PO4)6(OH)2 and Mg10(PO4)6(OH)2, wherein the Mg10(PO4)6(OH)2 accounts for 0-10% of the total mass of the coating. The preparation method of the magnesium-containing hydroxyapatite coating on the surface of the medical material comprises the following steps: a, hydro-thermal treatment; b, magnesium doping treatment; and c, hydro-thermal treatment. The preparation method of the magnesium-containing hydroxyapatite coating on the surface of the medical material is simple and easy to operate, and the magnesium-containing hydroxyapatite coating on the surface of the medical material has the functions of inducing bone tissue regeneration, and regulating osseous growth and remodeling.

Magnesium-containing hydroxyapatite coating on surface of medical material and preparation method of coating

The invention discloses a method for rapidly introducing function ions on the surface of titanium alloy, and belongs to the technical field of titanium alloy medical plant material surface functionalization modified treatment. The method comprises the steps that firstly, TC4 is adopted as an electrolytic anode, an electrolytic cell is adopted as an electrolytic cathode, and a volcano shaped porouscoating is formed on the surface of a TC4 sample through the plasma high temperature and high pressure transient sintering effect; then, a hydrothermal reaction method is used for introducing function ions into the coating, and meanwhile, the hydrophilicity is improved. The various function ions are evenly distributed on the surface of titanium alloy, and the adhesion and proliferation capabilityof osteogenesis cells is improved. According to the method, the coating can be prepared on the surface of the titanium alloy conveniently and rapidly, the ingredient of a solution is regulated in thefollow-up hydrothermal process, the function ions of Cu, Zn, Mg, Ce, Sr and the like are introduced to the surface of the coating, antibacterial or osteogenesis and other performances of a biologicalmedical metal material are improved, and the good application prospect is achieved in the fields of surface modification of medical implant materials and the like.

Method for rapidly introducing function ions on surface of titanium alloy

The invention discloses a preparation method of an electrolyte solution, a magnesium/titanium dioxide micro-porous ceramic coating on a titanium implant surface and a preparation method of the coating Magnesium salt, calcium salt, phosphate, sodium hydroxide and a film stabilizer are dissolved in water and are evenly stirred, and a micro-arc oxidation electrolyte solution is prepared; titanium ora titanium alloy is used as an anode, stainless steel is used as a cathode, the titanium or the titanium alloy and the stainless steel are placed in the micro-arc oxidation electrolyte solution, micro-arc oxidation treatment is performed on the titanium or the titanium alloy, and the magnesium/titanium dioxide micro-porous ceramic coating on the titanium implant surface is obtained According tothe preparation method of the electrolyte solution, the magnesium/titanium dioxide micro-porous ceramic coating on the titanium implant surface and the preparation method of the coating, the advantages of two metals, namely, the magnesium and the titanium are combined for the first time, the magnesium is used as a coating material to coat the titanium implant surface with the micro-arc oxidation technology, and the advantages of the two metals are complementary, so that the coating has the biological activity, the biocompatibility, the bone formation function and the antibacterial effect

Preparation method of electrolyte solution, magnesium/titanium dioxide micro-porous ceramic coating on titanium implant surface and preparation method of coating

The invention discloses a porous biological ceramic coating with antibiosis and bone promoting functions as well as a preparation method and application thereof, and belongs to the technical field ofbiomedical ceramic materials. The porous biological ceramic coating is a titanium dioxide coating doped with copper, magnesium, fluorine, calcium and phosphorus elements, the doped biological ceramiccoating is tightly combined with titanium and a titanium alloy substrate, and the doped biological ceramic coating is not prone to peel during implantation and use, can be combined with the substrateto form human body hard tissue repair with good mechanical and biological properties, and has the good antibiosis and bone promoting activity. According to the method, a prepared electrolyte for micro-arc oxidation treatment is simple in component, easy to control, free of components prone to decompose and stable in process, and large-scale batch production of the coating is promoted. The preparation method has no special requirements on the shape of a substrate material, can be suitable for the substrate with the complex shape, and thus the application range of the coating is effectively expanded.

Porous biological ceramic coating with antibiosis and bone promoting functions as well as preparation method and application thereof

The invention discloses a method of preparing a magnesium-doped hydroxyapatite/titania active film on the surface of medical titanium alloy. According to the invention, the technology of microarc oxidation is used for synthesis of the magnesium-doped hydroxyapatite/titania active film on the surface of titanium alloy in phosphate electrolyte containing magnesium ions and calcium ions. The film prepared by using the preparation method provided by the invention has a porous structure, high binding strength with a titanium alloy substrate and good biological activity and cellular affinity.

Guanghong Zhou

Papers

Method of preparing magnesium-doped hydroxyapatite/titania active film on surface of medical titanium alloy