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電流密度對(duì)聲電沉積生物活性透鈣磷石涂層結(jié)構(gòu)和形貌的影響
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Effects of Current Density on Structure and Morphology of Brushite by Sonoelectrodeposition Technique
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    摘要:

    通過聲電沉積工藝在碳／碳復(fù)合材料表面制備了生物活性透鈣磷石涂層，采用SEM、FFIR、XRD研究了超聲場(chǎng)中電流密度對(duì)涂層組成結(jié)構(gòu)和形貌的影響。發(fā)現(xiàn)在一定工藝條件下，隨電流密度增加，涂層的平均晶粒尺寸減小，致密度增加；當(dāng)電流密度小于l0mA／cm^2時(shí)涂層形貌為片狀，l0mA／cm^2-26mA／cm^2時(shí)為粒狀，32mA／cm^2時(shí)為花菜心狀。且涂層中透鈣磷石晶體的擇優(yōu)取向也發(fā)生變化，擇優(yōu)晶面依次為(021)、(111)、(220)。同時(shí)還討論了涂層微觀結(jié)構(gòu)變化機(jī)理。

    Abstract:

    Sonoelectrodeposition technique has been used to prepare bioactive brushite coatings on carbon/carbon composites. The effects of current density on the structures and morphology of the bioactive brushite coatings were also investigated. It is found that the coatings with plate like (021), granular like (111), and flower like(220)morphology can be fabricated by using different current densities respectively. The results show that the sizes of as deposited particles decrease with increasing current density. In addition, the mechanism of the variation of their microstructures was also discussed.

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熊信柏 李賀軍 李克智 黃劍鋒 馬威 王新木.電流密度對(duì)聲電沉積生物活性透鈣磷石涂層結(jié)構(gòu)和形貌的影響[J].稀有金屬材料與工程,2003,(11):923~926.[Xiong Xinbo, Li Hejun, Li Kezhi, Huang Jianfeng, Ma Wei, Wan Xinmu. Effects of Current Density on Structure and Morphology of Brushite by Sonoelectrodeposition Technique[J]. Rare Metal Materials and Engineering,2003,(11):923~926.]
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  • 最后修改日期:2002-04-29
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