猕猴桃皮提取物对β钛丝腐蚀速率和组织的影响

Hilda Fitria Lubis, Hanifa Natarisya
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引用次数: 0

摘要

研究背景:已知β钛正畸丝具有良好的耐腐蚀性,但在酸性环境中较弱,从而加快了腐蚀速度。一种可以用来减少腐蚀的天然抑制剂是猕猴桃皮提取物,它具有很高的抗氧化水平。目的:考察提取液在酸性pH值(pH 5)下降低β钛腐蚀速率和微观结构变化的能力。方法:采用直径为0.016 x 0.022 in,长度为6 cm的β钛样品。28个样本(n=28)被分为4组,对照组浸泡在pH为5的人工唾液中,3个处理组浸泡在浓度为400、500和600 ppm的猕猴桃皮提取物中(n=7)。样品在37℃的培养箱中浸泡7天。用失重法测试腐蚀速率,用扫描电镜(SEM)分析微观组织变化。结果:单因素方差分析显示,人工唾液浸泡β钛与猕猴桃皮浸膏浸泡β钛的腐蚀速率有显著差异,p=0.01 (p<0.05)。扫描电镜分析结果表明,浸在400ppm的猕猴桃皮提取物中,其表面变化最小。结论:失重法和扫描电镜法结果相似。事实证明,400ppm浓度的猕猴桃皮提取物能最有效地降低金属丝的腐蚀速率和微观结构的变化。
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Changes in the corrosion rate and microstructure of beta titanium wire using kiwi peel extract
Background: Beta titanium orthodontic wire is known to have good corrosion resistance but is weak in acidic environments, which advance the corrosion rate. One natural inhibitor that can be used to decrease corrosion is kiwi peel extract, which has a high antioxidant level. Purpose: This study aims to examine the ability of the extract to decrease the corrosion rate and microstructural changes of beta titanium at an acidic pH (pH 5). Methods: The samples used were beta titanium with a diameter of 0.016 x 0.022 in and a length of 6 cm. A total of 28 samples (n=28) were divided into four groups—a control group immersed in pH 5 artificial saliva and three treatment groups immersed in kiwi peel extract at concentrations of 400, 500, and 600 ppm (n=7), respectively. The samples were immersed for seven days at 37oC in an incubator. The corrosion rate was tested using the weight-loss method and microstructure change was analyzed using a scanning electron microscope (SEM). Results: One-way ANOVA showed that there are significant differences in corrosion rates between beta titanium immersed in artificial saliva and beta titanium immersed in kiwi peel extract with p=0.01 (p<0.05). SEM analysis results showed that the group with the least surface changes was the one immersed in 400 ppm of kiwi peel extract. Conclusion: Weight-loss and SEM methods show similar results. Kiwi peel extract proved to decrease the corrosion rate and changes in the microstructure of the wire most effectively at a concentration of 400 ppm.
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CiteScore
0.70
自引率
0.00%
发文量
44
审稿时长
16 weeks
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