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1Cr17Ce stainless steel is a new functional materials, it has the inherent characteristics of stainless steel, but also has anti-bacterial sterilization function. This thesis is based on pure iron, pure chromium, carbon, cerium rare earth elements as raw material, the the two Ce content 1Cr17Ce stainless steel sample ZG-0.01 IF vacuum induction furnace and WS-4 non-consumable vacuum arc smelting. By observing the microstructure analysis of inclusions and composition, hardness of the test sample, the study of rare earth elements cerium 1Cr17 Stainless Steel; by immersion test cycle, detected the corrosion potential, polarization curves and antibacterial experiments testing, study of rare earth elements Ce 1Cr17 stainless steel corrosion resistance and antibacterial properties. Cerium impact on the organization's research shows that: rare earth content is added under appropriate conditions, 1Cr17 stainless steel fine grain size of the organization, and the composition distribution uniformity, hardness values corresponding increase due to dislocation motion resistance increases, but when the rare earth element content exceeds the optimum content, an excessive amount of cerium is formed a large amount of di-or polyhydric compound, causing segregation, organization 1Cr17 stainless coarse, resulting in decreased hardness value. Rare earth elements and impurities in the reaction of the slag phase. Excessive residues in a large number of uneven distribution of inclusions in the steel matrix is formed, is easy to form the corrosion of the original battery, reduce the corrosion resistance of the steel. Cerium on the of stainless corrosion resistance and antibacterial test show that: in rare earth content within the scope of the present experimental study, the corrosion resistance of stainless steel with the increase of the rare earth content increases, within the experimental period, the corrosion resistance of stainless steel the same law described cerium Add purification of liquid steel, to reduce the quantity of the micro-cell, the passivation film is more stable and dense, thereby improving the corrosion resistance of stainless steel; measured using the coating method of the antibacterial properties of stainless steel The results showed that the cerium content is 0.21 % having excellent antibacterial properties and, on this basis, the increase of the cerium content of antimicrobial resistance has no practical significance, but because of the excessive amount of the cerium content of the organization, the deterioration of corrosion resistance and other properties. Obtained through the analysis of experimental data: steel, rare earth content within a certain range to improve inclusion morphology, grain refinement, purify steel night, when the content exceeds a certain number, but worsened performance stainless steel . The cerium content range of this study, when the cerium content of 0.21% 1Cr17 stainless steel can guarantee the mechanical properties, corrosion resistance, but also has excellent antibacterial properties.
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