中国口腔种植学杂志2025，Vol.30Issue(1)：47-53,7.DOI:10.12337/zgkqzzxzz.2025.02.009
酸洗预处理对Ti-6Al-4V合金微观形貌与耐腐蚀性能的影响
Effect of acid pickling pretreatment on the microstructure and corrosion resistance of Ti-6Al-4V alloy
赵雨佳 1刘奇奇 1邱林 2郝俊江 3宿瀚奇 3韩泽奎 1王心彧 4宿玉成5
作者信息
- 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||佳木斯大学 154007
- 2. 北京大学口腔医学院·口腔医院中心实验室 100081
- 3. 北京卡尔斯医疗器械有限公司 102600
- 4. 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
- 5. 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||北京卡尔斯医疗器械有限公司 102600||北京瑞城口腔医院 100032||北京口腔种植培训中心 100032||中国医学科学院北京协和医院口腔种植中心 100032
- 折叠
摘要
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.关键词
六铝四钒钛/酸洗/模拟体液/耐腐蚀性/β相Key words
Ti-6Al-4V/Acid pickling/Simulated body fluids/Corrosion resistance/β phase引用本文复制引用
赵雨佳,刘奇奇,邱林,郝俊江,宿瀚奇,韩泽奎,王心彧,宿玉成..酸洗预处理对Ti-6Al-4V合金微观形貌与耐腐蚀性能的影响[J].中国口腔种植学杂志,2025,30(1):47-53,7.
