A method for constructing a nano-zirconia coating on the surface of a metal bracket

Abstract

The invention discloses a method for constructing a nano zirconium dioxide coating on the surface of a metal bracket. It includes the following steps, A, pretreatment: After the bracket is left standing in NaOH solution, place it in an ultrasonic cleaner and clean it with acetone and absolute ethanol respectively; finally rinse it repeatedly with deionized water; B, before sputtering Treatment: pre-sputter argon gas first, then vacuumize, and start to introduce mixed gas; C, preparation of zirconia coating: install sputtering zirconia ceramic target in high-vacuum multifunctional magnetron sputtering equipment, and The prepared zirconia-coated bracket was placed in a box-type resistance furnace and annealed in nitrogen to obtain a metal bracket with nano-zirconia coating. Its advantages are: high deposition rate, low defects in the film, strong bonding with the substrate; good smoothness; effectively reducing the surface roughness of the bracket; strong adhesion between the zirconia coating and the bracket; The zirconia coating significantly improves the mechanical properties of the bracket surface and has strong corrosion resistance.

Description

technical field [0001] The invention relates to a method for surface modification of metal stainless steel brackets for medical orthodontics, in particular to a method for constructing nano-zirconia coatings on the surface of stainless steel orthodontic brackets by high-vacuum radio frequency magnetron sputtering method. Background technique [0002] Malocclusion is a common oral disease, and its causes and mechanisms are intricate. In clinical orthodontic treatment, malocclusion is often treated by fixed orthodontic technology. Orthodontic brackets and arch wires are two important components of fixed appliances. The former is firmly adhered to the surface of the crown with an adhesive, and the latter is located in the groove of the bracket, and different types of orthodontic treatment are applied to the teeth. Force to achieve precise movement of teeth. [0003] There is a relative displacement between the bracket and the arch wire. In clinical orthodontic treatment, the...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that it can not only solve the problems of large friction force, caries around the brackets and recurrent gingival inflammation and mucosal ulcers in the process of orthodontic treatment, but also has good aesthetic performance, high strength, wear resistance and corrosion resistance. Method for constructing nano-zirconia coating on metal bracket surface with excellent performance

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