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发明授权
CN108728774B 一种应用于口腔领域的医用奥氏体抗菌不锈钢 有权

一种应用于口腔领域的医用奥氏体抗菌不锈钢
摘要：
本发明的目的在于提供一种医用奥氏体抗菌不锈钢，其化学成分为：C：≤0.02；Si：0.2‑0.8；Mn：0.5‑1.8；S：≤0.02；P：≤0.02；Cr：17.0‑18.5；Ni：11.5‑14.0；Mo：2.0‑3.0；Cu：3.0‑5.0；Ga：0.5‑3.0；余量为Fe。通过在奥氏体不锈钢基体中添加Ga元素，以及相应的热处理，能够在奥氏体基体中析出Fe3Ga中间相，从而赋予材料快速杀菌性以及在高细菌浓度下的强烈抗菌性能。该不锈钢能够应用于口腔领域涉及到的植入医疗器械，能够大幅降低由植入器械所引发的细菌感染问题。
摘要（英）：

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.

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