中国口腔种植学杂志 ›› 2025, Vol. 30 ›› Issue (1): 47-53.DOI: 10.12337/zgkqzzxzz.2025.02.009

• 论著-基础研究 • 上一篇    下一篇

酸洗预处理对Ti-6Al-4V合金微观形貌与耐腐蚀性能的影响

赵雨佳1,2, 刘奇奇1,2, 邱林3, 郝俊江4, 宿瀚奇4, 韩泽奎1,2, 王心彧1, 宿玉成1,4,5,6,7   

  1. 1佳木斯大学口腔医学院 佳木斯大学口腔医学工程实验中心 黑龙江省生物医学材料及临床应用重点实验室 154002;
    2佳木斯大学 154007;
    3北京大学口腔医学院·口腔医院中心实验室 100081;
    4北京卡尔斯医疗器械有限公司 102600;
    5北京瑞城口腔医院 100032;
    6北京口腔种植培训中心 100032;
    7中国医学科学院北京协和医院口腔种植中心 100032
  • 收稿日期:2024-07-30 出版日期:2025-02-28 发布日期:2025-02-24
  • 通讯作者: 宿玉成,Email:yuchengsu@163.com,电话:010-66212299
  • 作者简介:赵雨佳,硕士研究生在读,研究方向:金属材料3D打印与表面处理、数字化口腔种植;宿玉成,主任医师、教授、博士研究生导师,研究方向:口腔种植外科和正颌外科相关研究

Effect of acid pickling pretreatment on the microstructure and corrosion resistance of Ti-6Al-4V alloy

Zhao Yujia1,2, Liu Qiqi1,2, Qiu Lin3, Hao Junjiang4, Su Hanqi4, Han Zekui1,2, Wang Xinyu1, Su Yucheng1,4,5,6,7   

  1. 1Stomatology Collage of Jiamusi University, Experimental Center for Stomatological Engineering, Jiamusi University, Key Laboratory of Oral Biomedical Materials and Clinical Application, Heilongjiang Province, Jiamusi 154002, Heilongjiang, China;
    2Jiamusi University, Jiamusi 154007, Heilongjiang, China;
    3Central Laboratory, Peking University School and Hospital of Stomatology, Beijing 100080, China;
    4Beijing CRS Medical Device Co., Ltd, Beijing 102600, China;
    5Beijing Citident Hospital of Stomatology, Beijing 100032, China;
    6Beijing Implant Training College (BITC), Beijing 100032, China;
    7Dental Implant Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100032, China
  • Received:2024-07-30 Online:2025-02-28 Published:2025-02-24
  • Contact: Su Yucheng, Email: yuchengsu@163.com, Tel: 0086-10-66212299

摘要: 目的 评估不同酸洗液酸洗预处理后六铝四钒钛(Ti-6Al-4V)合金的微观形貌和耐腐蚀性能的变化,以确定适合作为植入性生物材料的钛合金的酸洗方法。方法 采用接触角测量、扫描电子显微镜、X射线能谱仪、电化学测试等研究HF+H2SO4酸洗液、HF+HNO3酸洗液、HF酸洗液对Ti-6Al-4V合金试样进行酸洗后的微观形貌、亲水性能及耐腐蚀性能等。结果 Ti-6Al-4V合金试样在3种酸洗液中表现为不同的酸洗速率:HF+H2SO4酸洗组为0.088 μm/s、HF+HNO3酸洗组为0.064 μm/s、HF酸洗组为0.097 μm/s。3组试样均表现出特征性的α+β相微观形貌,HF+HNO3酸洗组和HF酸洗组β相占比大于HF+H2SO4酸洗组,HF酸洗组出现了氢化物相,光学显微镜下HF+HNO3酸洗组试样点蚀现象最少;在模拟体液中做耐腐蚀性能测试,自腐蚀电位结果为去离子水组>HF+HNO3酸洗组>HF+H2SO4酸洗组>HF酸洗组。结论 经HF+HNO3酸洗的Ti-6Al-4V合金试样表面平滑,接触角为47.63°±2.40°、失重率为1.11%±0.08%,可均匀去除有机杂质及氧化膜,C/Ti与O/Ti值分别下降至0.047±0.001、0.040±0.008,且有较高耐腐蚀性能,自腐蚀电位为-0.676 V。可选用HF+HNO3酸洗液以获得耐腐蚀性能较高且表面清洁、均匀的植入性生物Ti-6Al-4V合金。

关键词: 六铝四钒钛, 酸洗, 模拟体液, 耐腐蚀性, β相

Abstract: Objective To evaluate the changes in the microstructure and corrosion resistance of Ti-6Al-4V alloy after different acid pickling pretreatments and to determine the optimal pickling method for titanium alloys used as implantable biomaterials. Methods The microstructure, hydrophilic properties, and corrosion resistance of machined Ti-6Al-4V alloy samples pickled with HF+H2SO4, HF+HNO3, and HF solutions were analyzed using contact angle measurements, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and electrochemical tests. Results 1. Pickling rates varied among the three solutions: HF+H2SO4 (0.088 μm/s), HF+HNO3 (0.064 μm/s), and HF (0.097 μm/s). 2. All groups exhibited characteristic α+β phase microstructures, with a higher proportion of β phase observed in the HF+HNO3 and HF groups compared to the HF+H2SO4 group. The HF group also displayed hydride phases. Optical microscopy revealed the least pitting corrosion in the HF+HNO3 group. 3. Corrosion resistance testing in simulated body fluids showed the following order of self-corrosion potential: control group > HF+HNO3 group > HF+H2SO4 group > HF group. Conclusion HF+HNO3 pickling produced Ti-6Al-4V alloy samples with smooth surfaces, a contact angle of 47.63°±2.40°, a weight loss rate of 1.11%±0.08%, and uniform removal of organic impurities and oxide films. The C/Ti and O/Ti ratios were reduced to 0.047±0.001 and 0.040±0.008, respectively. This treatment achieved higher corrosion resistance, with a self-corrosion potential of -0.676V. HF+HNO3 is recommended as the preferred pickling solution for producing implantable Ti-6Al-4V alloys with superior corrosion resistance and a clean, uniform surface.

Key words: Ti-6Al-4V, Acid pickling, Simulated body fluids, Corrosion resistance, β phase