杨学兵,张林伟.水蒸气处理对钛合金表面羟基磷灰石涂层结构的影响[J].表面技术,2020,49(9):167-174.
YANG Xue-bing,ZHANG Lin-wei.Effect of Steam Treatment on the Structure of Hydroxyapatite Coating on Titanium Alloy[J].Surface Technology,2020,49(9):167-174 |
| 水蒸气处理对钛合金表面羟基磷灰石涂层结构的影响 |
| Effect of Steam Treatment on the Structure of Hydroxyapatite Coating on Titanium Alloy |
| 投稿时间：2020-01-15 修订日期：2020-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.09.018 |
| 中文关键词: 钛合金 羟基磷灰石 等离子喷涂 水蒸气处理 结晶度 生物活性 |
| 英文关键词:titanium alloy hydroxyapatite plasma spraying steam treatment crystallinity creature activity |
| 基金项目:国家自然科学基金青年科学基金（51701089）；江西省重点研发计划项目（20161BBH80061）；江西省科学院博士项目（2018- YYB-09）；江西省科学院普惠制项目（2018-XTPH1-09） |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 制备结晶度较高且裂纹较少的羟基磷灰石涂层。方法 采用等离子喷涂法，在不同功率下，于钛合金表面制备羟基磷灰石涂层。通过水蒸气处理法，在不同温度下处理羟基磷灰石涂层。使用扫描电子显微镜（SEM）和X射线衍射仪（XRD）分析羟基磷灰石的表面形貌和晶体结构。结果 当等离子喷涂功率从20 kW增大到29 kW时，羟基磷灰石涂层的沉积效率先增大后稳定，涂层结晶度先增大后减小，涂层中氧化钙的含量先增大后稳定。当喷涂功率为23 kW时，羟基磷灰石涂层结晶度较高。水蒸气处理能明显去除涂层中的α-磷酸三钙、β-磷酸三钙和氧化钙，当水蒸气处理温度从140 ℃增大到200 ℃时，羟基磷灰石涂层晶粒由棒状向颗粒状转变，涂层结晶度不断增大，涂层中磷酸四钙的含量先减小后增大，较高的温度会造成涂层表面微裂纹的产生。在模拟体液中浸泡后，经过水蒸气处理的涂层表面会诱导生成较纯的羟基磷灰石。180 ℃水蒸气处理后的涂层表面会沉积一层均匀的羟基磷灰石，生物活性较高。结论 羟基磷灰石涂层的结晶度随等离子喷涂功率的增大，先增大后减小，随水蒸气处理温度的上升而增大。在合适条件下制得的羟基磷灰石涂层具有较高的生物活性。 |
| 英文摘要: |
| The work aims to prepare hydroxyapatite coating with high crystallinity and few flaws. Hydroxyapatite coatings were prepared on titanium alloy by plasma spraying under different power. Then, the hydroxyapatite coatings were treated by steam at different temperature. Morphology and crystalline structure of coatings were characterized by scanning electron microscope and X-ray diffraction. When the power of plasma spraying increased from 20 kW to 29 kW, the deposition efficiency of hydroxyapatite coatings increased at first and then tended to be stable, the crystallinity of hydroxyapatite coatings increased at first and then decreased and the content of calcium oxide in coatings increased at first and then tended to be stable. Crystallinity of hydroxyapatite was the highest when the power of plasma spraying was 23 kW. Steam treatment could obviously eliminate α-tricalcium phosphate, β-tricalcium phosphate and calcium oxide in coatings. As the temperature of steam treatment increased from 140 ℃ to 200 ℃, the crystalline grains of hydroxyapatite coatings changed from stick grains to granule grains. Crystallinity of hydroxyapatite coatings increased constantly and the content of tetracalcium phosphate in coatings decreased at first and then increased. Relatively high temperature resulted in occurrence of flaws. After soaking in simulated body fluid, the coatings after steam treatment could induce the deposition of pure hydroxyapatite. When the temperature of steam treatment was 180 ℃, there was a uniform layer of hydroxyapatite on the surface of coating, which indicated high creature activity. Crystallinity of hydroxyapatite coatings increases at first and then decreases as the plasma spraying power rises, but increases as the temperature of steam treatment rises. The hydroxyapatite coating prepared under appropriate conditions has relatively high creature activity. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
渝公网安备 50010702501715号