Influence of rapid heating with infrared radiation on RF magnetron-sputtered calcium phosphate coatings.
Influence of rapid heating with infrared radiation on RF magnetron-sputtered calcium phosphate coatings.
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红外辐射快速加热对射频磁控溅射磷酸钙涂层的影响。
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
J. Jansen
中科院分区：
文献类型：
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作者：
M. Yoshinari;T. Hayakawa;J. Wolke;K. Nemoto;J. Jansen
研究了红外辐射快速加热对射频磁控溅射磷酸钙（Ca-P）涂层的物理化学和形貌的影响。在钛盘和钛柱上沉积了约2.5 μ m厚的Ca-P涂层。这些试样不处理或通过红外辐射在300、400、500、600和700 ℃下热处理4、7、11、17和24秒。随后，将样本浸入模拟体液（SBF）中1天、1周和5周。X射线衍射测量表明，在500 ℃或更高温度下加热导致涂层结晶度增加。此外，FT-IR测量揭示了在500-700 ℃下处理的样品的光谱中出现OH峰。电子探针显微分析表明，浸泡5周后，在500和600 ℃下热处理的涂层中约有40-50%保持不变。在700摄氏度下热处理的涂层显示根本没有溶解。另一方面，涂覆的和300 ° C处理的膜在1天内溶解。样品的扫描电子显微镜显示，热处理后涂层中不存在明显的裂纹。基于这些发现，我们得出结论，600摄氏度左右的红外辐射快速加热是射频磁控溅射涂层的最佳热处理。
This study evaluated the effect of rapid heating with infrared radiation on the physico-chemical and morphological properties of radio frequent (RF) magnetron-sputtered calcium phosphate (Ca-P) coatings. About 2.5 microm thick Ca-P coatings were deposited on titanium disks and cylinders. These specimens were left untreated or were heat treated by infrared radiation at 300, 400, 500, 600, and 700 degrees C for 4, 7, 11, 17, and 24 s. Subsequently, the specimens were immersed in simulated body fluid (SBF) for 1 day, 1 week, and 5 weeks. X-ray diffraction measurements showed that heating at 500 degrees C or higher resulted in an increase of coating crystallinity. In addition, FT-IR measurements revealed the appearance of OH peaks in the spectra of samples treated at 500-700 degrees C. Electron probe microanalysis showed that after 5 weeks of immersion about 40-50% of the coatings heat treated at 500 and 600 degrees C was maintained. The coatings heat treated at 700 degrees C showed no dissolution at all. On the other hand, as-coated and 300 degrees C treated films were dissolved within 1 day. Scanning electron microscopy of the samples showed that directly after heat treatment no apparent cracks were present in the coatings. On the basis of these findings, we conclude that rapid heating with infrared radiation around 600 degrees C is the best heat treatment for RF magnetron-sputtered coatings.