深圳大学学报理工版

采用00Cr18Mn18Mo2N高氮无镍奥氏体不锈钢作为试验材料,以铜作为其抗菌元素,研究了改性材料的时效处理工艺、显微组织、抗菌性能和耐蚀性.结果表明,含铜的高氮无镍奥氏体不锈钢在700～900 ℃进行1～24 h时效处理,氮化铬的析出量随着时效温度升高和时效时间延长而增加.该钢经800 ℃时效处理1 h后可改善细菌黏附状况,但抗菌性能较弱,同时析出的氮化铬会明显损害耐蚀性,时效时间越长,耐蚀性受损越严重.开发铜合金化高氮无镍奥氏体抗菌不锈钢时,应从抗菌性和耐蚀性两方面综合考虑以优化时效处理工艺.

The aging treatment process, microstructure, antibacterial properties and corrosion resistance are investigated by using 00Cr18Mn18Mo2N high-nitrogen nickel-free austenitic stainless steels as test material and copper as its antibacterial element. Results show that the precipitation amount of chromium nitride in Cu-bearing 00Cr18Mn18Mo2N increases with aging temperature rised and aging time prolonged when it is aging treated between 700～900 ℃ for 1～24 h. It can improve the resistance to bacterial adhesion after aging treatment at 800 ℃ for 1 h, however, the antibacterial performance gets weak, and the precipitation of chromium nitride can significantly damage the corrosion resistance. The longer the aging treatment lasts, the more seriously the corrosion resistance is damaged. Therefore, in developing Cu-containing high nitrogen nickel-free antibacterial stainless steel, optimized aging treatment process should be synthetically considered from both anti-bacterial effect and corrosion resistance.

引言
1 试验材料及方法
2 试验结果及分析
3 结语

表1 高氮无镍不锈钢各元素的质量分数<br/>Table 1 Chemical composition of high nitrogen nichel-free stainless steels%

表1 高氮无镍不锈钢各元素的质量分数
Table 1 Chemical composition of high nitrogen nichel-free stainless steels%

图1 HNSCu在固溶态的显微组织<br/>Fig.1 Microstructure of HNSCu in solution-anneal state

图1 HNSCu在固溶态的显微组织
Fig.1 Microstructure of HNSCu in solution-anneal state

图2 时效处理工艺对氮化铬析出的影响<br/>Fig.2 Effect of aging treatment process on the precipitation of chromium nitride

图2 时效处理工艺对氮化铬析出的影响
Fig.2 Effect of aging treatment process on the precipitation of chromium nitride

图3 片层状析出物在高倍下的形貌<br/>Fig.3 Morphology of the lamella precipitation under high magnification

图3 片层状析出物在高倍下的形貌
Fig.3 Morphology of the lamella precipitation under high magnification

图4 HNSCu时效处理后氮的分布状况<br/>Fig.4 Distribution of nitrogen in HNSCu after aging treatment

图4 HNSCu时效处理后氮的分布状况
Fig.4 Distribution of nitrogen in HNSCu after aging treatment

图5 试样在37 ℃人工汗液中的极化曲线<br/>Fig.5 Polarization curves of samplesin 37 ℃ artificial sweat

图5 试样在37 ℃人工汗液中的极化曲线
Fig.5 Polarization curves of samplesin 37 ℃ artificial sweat

表2 试验材料的平均抗菌率<br/>Table 2 Average sterilization rates of materials %

表2 试验材料的平均抗菌率
Table 2 Average sterilization rates of materials %

图6 试样抗菌试验后的表面沉积物形貌<br/>Fig.6 Morphology of sediments on sample surface after antibacterial test

图6 试样抗菌试验后的表面沉积物形貌
Fig.6 Morphology of sediments on sample surface after antibacterial test

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备注

引言

1 试验材料及方法

2 试验结果及分析

3 结语

期刊信息

备注

引言

1 试验材料及方法

2 试验结果及分析

3 结 语

期刊信息

3 结语