| 等离子喷涂羟基磷灰石涂层的晶化及其结构特征 |
| Rerystallization and Structure of Plasma Sprayed Hydroxyapatite Coating |
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| 摘要: |
| 关键词: 等离子喷涂 羟基磷灰石 涂层 晶化 结构 |
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| Abstract: Phase compositions, function group and surface morphology of recrystallized plasma sprayed hydroxyapatite (HA) coatings were examined by means of X-ray diffraction (XRD), Fourier transform infrared spectra (FTIR), Raman spectra, scanning electron microscope (SEM) and electron probe microanalyzer (EPMA). The results show that the structural integrity of HA was almost completely restored after the heat treatment of (600～700℃)×2h. Temperatures above this value were unfavorable to the restoration of OH- and crystallinity. The recrystallizing treatment caused amorphous and decomposed phases transform into crystalline HA with a very small amount of CaO retained in coating. Under 500℃, longer keeping time led to a gradual increase of crystallinity, however, under 600℃, the crystallinity showed no obvious changes with decreased CaO content. Meanwhile, nanometer hydrox-yapatite crystals with dot-like, polyhedral, acerous and effloresent shapes and a average size of 100nm originated in the coatings. |
| Keywords: plasma spraying hydroxyapatite coating recrystallization structure |
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| 吕宇鹏,李士同,朱瑞富,李木森,雷廷权.等离子喷涂羟基磷灰石涂层的晶化及其结构特征[J].无机化学学报,2002,18(8):844-848. |
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