| 钛表面的氧化对钛瓷结合强度的影响 |
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| 引用本文： | 郭立童,刘啸晨,高积强,杨建峰,郭天文. 钛表面的氧化对钛瓷结合强度的影响[J]. 无机材料学报, 2009, 24(5): 915-918. DOI: 10.3724/SP.J.1077.2009.00915 |
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| 作者姓名： | 郭立童 刘啸晨 高积强 杨建峰 郭天文 |
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| 作者单位： | (1. 中国矿业大学 材料科学与工程学院, 徐州 221116; 2. 金属材料强度国家重点实验室, 西安交通大学, 西安 710049; 3. 第四军医大学, 西安 710032; 4. 浙江大学 附属口腔医院, 杭州 310006) |
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| 摘 要： | 研究了钛表面氧化对钛/瓷结合强度的影响, 并采用溶胶凝胶技术在钛表面制备SnOx中间层, 研究SnOx层对钛/瓷结合强度的影响. 结果表明：空气炉中800℃氧化3min后, 钛/瓷结合强度明显下降; 烤瓷炉中预氧化3min, 钛/瓷结合强度无明显变化. 热处理使钛表面生成一层金红石型氧化层, 钛/瓷剥脱主要发生在金红石氧化层与钛之间. 采用溶胶-凝胶法经300℃处理后在钛表面制得的SnOx涂层, 可有效隔绝氧向Ti表面的扩散, 防止钛表面的过度氧化, 提高了钛/瓷结合强度. 经SnOx涂层处理后, 钛/瓷剥脱主要发生在SnOx涂层内.
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| 关 键 词： | 氧化 钛/瓷结合 三点弯曲法 牙科材料 |
| 收稿时间： | 2009-01-19 |
| 修稿时间： | 2009-04-22 |
Effect of Titanium Surface Oxidation on the Bonding Strength of Ti-Porcelain |
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| GUO Li-Tong,LIU Xiao-Chen,GAO Ji-Qiang,YANG Jian-Feng,GUO Tian-Wen. Effect of Titanium Surface Oxidation on the Bonding Strength of Ti-Porcelain[J]. Journal of Inorganic Materials, 2009, 24(5): 915-918. DOI: 10.3724/SP.J.1077.2009.00915 |
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| Authors: | GUO Li-Tong LIU Xiao-Chen GAO Ji-Qiang YANG Jian-Feng GUO Tian-Wen |
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| Affiliation: | (1. The Material Science and Engineering Colloge, China University of Mining and Technology, Xuzhou 221116, China; 2. State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China; 3. The Fourth Military Medical University, Xi’an 710032, China; 4. Department of Prosthodentics, Affiliated Hospital of Stomatology, School of Medicine, Zhejiang University, Hangzhou 310006, China) |
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| Abstract: | Effects of titanium surface oxidation on titanium-ceramic adhesion were investigated. Cast pure titanium was subjected to pre-oxidation and introduction of an intermediate layer of SnOx by sol-gel process. Specimen surfaces were characterized by XRD and SEM/EDS. The adhesion between the titanium and porcelain was evaluated by three-point flexure bond test. A rutile layer is formed on the titanium surface after pre-oxidation. Failure of the titanium-porcelain with pre-oxidation treatment predominantly occurs at the titanium-oxide interface. Pre-oxidation treatment does not affect the fracture mode of the titanium-porcelain system. The rutile layer is more strongly bonded to the porcelain than titanium. The poor adhesion of the rutile with substrate is due to the thermal stress arising from the large lattice mismatch and difference in coefficient of thermal expansion between Ti and rutile during cooling. However, a thin and coherent SnOx film with small spherical pores obtained after heat-treated at 300℃ serves as an effective oxygen diffusion barrier to improve titanium-ceramic adhesion. The SnOx films change the fracture mode of the titanium-porcelain system and improve the mechanical and chemical bonding between porcelain and titanium, resulting in the increased bonding strength of titanium-porcelain. |
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| Keywords: | oxidation titanium-porcelain bonding three-point flexure bond test dental material |
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