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Medical antibacterial austenite stainless steel applied to field of oral cavities

An antibacterial stainless steel and austenite technology, applied in the field of medical stainless steel, can solve the problems of deteriorating the thermal processing performance of the material, not showing the antibacterial ability, etc., and achieve the effect of rapid sterilization and sterilization, excellent antibacterial performance and broad application prospects.

Active Publication Date: 2018-11-02
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

All in all, the existing patents on medical antibacterial stainless steel are basically adding Cu element to stainless steel, but none of the related patents shows the antibacterial ability of the obtained material under high bacterial concentration
In addition, the amount of Cu element is the root of the antibacterial ability of copper-containing antibacterial stainless steel, but the addition of higher Cu content will deteriorate the thermal processing performance of the material, thereby limiting its popularization and application

Method used

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  • Medical antibacterial austenite stainless steel applied to field of oral cavities
  • Medical antibacterial austenite stainless steel applied to field of oral cavities
  • Medical antibacterial austenite stainless steel applied to field of oral cavities

Examples

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Embodiment

[0020] Embodiment: Embodiment 1-8 is the medical austenitic antibacterial stainless steel containing Ga element, and its chemical composition is shown in Table 1. Controlled smelting is carried out according to the scope of the chemical composition of the present invention, and a bar with a diameter of 16 mm is formed through smelting, forging and hot forging. Samples were taken from the bar for antibacterial heat treatment, the solution temperature was 1130°C, the solution time was 40 minutes, the aging temperature was 600°C, and the aging time was 5h.

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Abstract

The invention aims to provide medical antibacterial austenite stainless steel. The chemical components of the medical antibacterial austenite stainless steel comprise 0.02 or the less of C, 0.2-0.8 ofSi, 0.5-1.8 of Mn, 0.02 or the less of S, 0.02 or the less of P, 17.0-18.5 of Cr, 11.5-14.0 of Ni, 2.0-3.0 of Mo, 3.0-5.0 of Cu, 0.5-3.0 of Ga and the balance Fe. By adding Ga in an austenite stainless steel matrix and through corresponding heat treatment, a Fe3Ga intermediate phase can be precipitated from the austenite matrix, and thus the quick sterilization property and the strong antibacterial property under the high bacterial concentration are achieved on the material. The medical antibacterial austenite stainless steel can be applied to implantable medical devices related to the fieldof oral cavities, and the bacterial infection problems caused by the implantable devices can be greatly lowered.

Description

technical field [0001] The invention relates to the field of medical stainless steel, in particular to a medical austenitic antibacterial stainless steel used in the field of oral cavity. By adding an appropriate amount of Ga element to the stainless steel matrix, the material has a rapid and strong bactericidal function. Background technique [0002] Medical stainless steel is the oldest and most widely used medical metal material due to its outstanding advantages such as good mechanical properties and excellent body fluid corrosion resistance. Among them, medical austenitic stainless steel is the most widely used type of medical stainless steel due to its non-magnetic, high toughness and excellent corrosion resistance, and has been widely used in artificial joints, fracture internal fixation devices, spinal orthopedic internal fixation systems, and dentistry. Prosthetics, cardiovascular stents and many other implanted devices. At present, implant products for orthodontic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C22C38/42C22C38/02C22C38/04C22C38/58C21D6/00
CPCC21D6/004C21D6/005C21D6/008C21D2211/001C22C38/002C22C38/02C22C38/04C22C38/42C22C38/44C22C38/58
Inventor 席通赵金龙杨柯杨春光
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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