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摘要: 采用阴极声电沉积工艺在炭/炭复合材料表面制备了生物活性透钙磷石涂层，考察了超声场中不同声作用功率条件下的电流密度、端电压特征和声作用功率对涂层组成结构、形貌的影响及涂层与基体的结合力，SEM、EDAX、FTIR、XRD等结果分析表明：电流密度以及端电压具有更大的调节范围，且在沉积过程中两参数不随时间而改变，说明该工艺具有自优化特征；所制透钙磷石涂层形貌呈片状，由两种不同晶格参数单斜相组成；炭/炭复合材料中制备时残留的孔隙仍保留。在小于声作用功率临界条件下作用超声波，生物活性透钙磷石涂层不脱落。Abstract: Abstract: Bioactive calcium phosphate (brushite, CaHPO4.2H2O) coatings on carbon/carbon composites were prepared by a cathode sonoelectrodepostion process. The effect of ultrasonic operative power, current density and voltage on morphology, structure and adhesion to the carbon/carbon composites were investigated by SEM, EDAX, FTIR and XRD. Results show that the current density and voltage can be kept constant during sonoelectrodepostion, indicating that this process has a self-optimizing character. The morphologies of the brushite coating is flake-like, consisting of two of monoclinic phases. The residue pores in the original C/C composite are retained. The bioactive brushite coatings cannot be exfoliated by ultrasound below a critical operating power.
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