Antibacterial cobalt-chromium alloy and preparation method thereof

The invention discloses antibacterial cobalt-chromium alloy. The cobalt-chromium alloy is prepared from the following chemical compositions in percentage by weight: 26-27.8% of Cr, 5-8% of Mo, 3-3.8%of W, 3.6-4.2% of Mn, 2.5-3.5% of Si, 3-3.6% of Ag, 0.5-1.8% of Cu, 0.3-0.6% of Ti, 0.2-0.5% of composite rare earth elements, and the balance of Co. By adding the proper amount of Ag and Cu and adjusting the content of the other chemical compositions, the cobalt-chromium alloy has good spectral antibacterial performance on the basis of good mechanical properties, meanwhile, the composite rare earth elements are mixed to further improve the micro-structure form of the cobalt-chromium alloy, and the binding force of the cobalt-chromium alloy with a baked porcelain body is effectively increased. 本发明公开了种抗菌型钴铬合金，其按重量百分比计包括如下化学成分：Cr 26～27.8％、Mo 5～8％、W 3～3.8％、Mn 3.6～4.2％、Si 2.5～3.5％、Ag 3～3.6％、Cu 0.5～1.8％、Ti 0.3～0.6％、复合稀土元素0.2～0.5％、余量为Co。本发明通过添加适量的Ag和Cu和调整其它化学成分的含量从而在保证该钴铬合金良好的力学性能的基础上赋予其良好的光谱抗菌性能，同时通过复合稀土元素的掺入以进步改善该钴铬合金