摘要
通过声电沉积工艺在碳/碳复合材料表面制备了生物活性透钙磷石涂层,采用SEM、FTIR、XRD研究了超声场中电流密度对涂层组成结构和形貌的影响。发现在一定工艺条件下,随电流密度增加,涂层的平均晶粒尺寸减小,致密度增加;当电流密度小于10mA/cm2时涂层形貌为片状,10mA/cm2～26mA/cm2时为粒状,32mA/cm2时为花菜心状。且涂层中透钙磷石晶体的择优取向也发生变化,择优晶面依次为(021)、(111)、(220)。同时还讨论了涂层微观结构变化机理。
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 (2 (2) over bar0) 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 microstructuies was also discussed.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2003年第11期923-926,共4页
Rare Metal Materials and Engineering
