中国组织工程研究

中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (43): 6966-6970.doi: 10.3969/j.issn.2095-4344.2015.43.015

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

单因素实验法确定两种软磁合金镀铬的最佳工艺条件

姜 瑞，聂二民，张春元，曾尽娣，谈济州   

  1. 中山大学附属第一医院口腔科，广东省广州市 510080
  • 收稿日期:2015-09-01 出版日期:2015-10-15 发布日期:2015-10-15
  • 通讯作者: 张春元，中山大学附属第一医院口腔科，广东省广州市 510080
  • 作者简介:姜瑞，女，1986年生，河南省商丘市人，汉族，2013年中山大学毕业，硕士，医师，主要从事口腔修复方面研究。
  • 基金资助:

    广东省科技厅社会发展项目(2011B080701010、2012B061700066)

Optimal chroming conditions of two soft magnetic alloys as determined by one-factor experimental method

Jiang Rui, Nie Er-min, Zhang Chun-yuan, Zeng Jin-di, Tan Ji-zhou   

  1. Department of Stomatology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
  • Received:2015-09-01 Online:2015-10-15 Published:2015-10-15
  • Contact: Zhang Chun-yuan, Department of Stomatology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China
  • About author:Jiang Rui, Master, Physician, Department of Stomatology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong Province, Chin
  • Supported by:

    the Social Development Project of Guangdong Provincial Science and Technology Department, No. 2011B080701010, 2012B061700066

PDF

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被引次数

2

摘要：

背景：目前主要通过镀铬法提高软磁合金的抗腐蚀性能。
目的：采用单因素实验法确定铁铬钼软磁合金和铁镍软磁合金表面镀铬的最佳工艺条件，提高其抗腐蚀能力。
方法：铸造20 mm×20 mm×2 mm的方片状铁铬钼合金和铁镍合金各12片，表面经磨光、抛光、活化剂活化后进行镀铬，采用单因素实验法，选因素为电镀类型(分为6价铬和3价铬)、电流密度(15，20，25，35，40，45 A/dm2)和电镀时间(30，40，60 min)，考查指标为镀层硬度和厚度，硬度和厚度值越大镀层的耐腐蚀性越强。扫描电子显微镜观察最佳工艺条件下制备的镀层形貌。
结果与结论：两种软磁合金表面的6价铬镀层硬度和厚度均大于3价铬镀层，且6价铬镀层相对更均匀，说明电镀6价铬可以明显提高铁镍软磁合金和铁铬钼软磁合金的耐腐蚀性。当基材为铁铬钼软磁合金时，电镀6价铬的最佳工艺为电流密度45 A/dm2，电镀时间为60 min；电镀3价铬的最佳工艺为电流密度20 A/dm2，电镀时间为30 min。当基材为铁镍软磁合金时，电镀6价铬的最佳工艺条件为电流密度35 A/dm2，电镀时间为60 min；电镀3价铬的最佳工艺条件为电流密度20 A/dm2，电镀时间为40 min。
中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

关键词: 生物材料, 口腔生物材料, 铁铬钼, 铁镍, 电镀铬, 单因素实验法, 耐腐蚀, 组织构建

Abstract:

BACKGROUND: Chroming can improve the corrosion resistance of soft magnetic alloys.

OBJECTIVE: To identify the optimal chroming conditions of two soft magnetic alloys, Fe-Cr-Mo and Fe-Ni, so as to improve their corrosion resistance.
METHODS: Twelve pieces of square-shaped Fe-Cr-Mo and Fe-Ni soft magnetic alloys were casted in the size of 20 mm×20 mm×2 mm. After sanding and polishing, chrome plating was performed on these specimens and the coating thickness and hardness were measured. The selection factors included electroplate type (hexavalent chromium and trivalent chromium), current density (15, 20, 25, 35, 40, 45 A/dm2) and electroplating time (30, 40, 60 minutes). The optimal chroming conditions were determined by one-factor experimental method and the chrome plating was observed under a scanning electron microscope. 
RESULTS AND CONCLUSION: Cr6+ coating was significantly better than Cr3+ coating in the aspects of hardness, thickness and uniformity, indicating Cr6+ coating can significantly improve the corrosion resistance of Fe-Cr-Mo and Fe-Ni alloys. For Fe-Cr-Mo soft magnetic alloy, the optimal conditions of Cr6+ coating were as follows: current density of 45 A/dm2 and electroplating time of 60 minutes; the optimal conditions of Cr3+ coating were as follows: current density of 20 A/dm2 and electroplating time of 30 minutes. For Fe-Ni soft magnetic alloys, the optimal conditions of Cr6+ coating were as follows: current density of 35 A/dm2 and electroplating time of 60 minutes; the optimal conditions of Cr3+ coating were as follows: current density of 20 A/dm2 and electroplating time of 40 minutes.
中国组织工程研究杂志出版内容重点：生物材料；骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性；组织工程

Key words: Dental Alloys, Chromium, Corrosion, Tissue Engineering