CAJ | 학술논문

用X射线衍射、激光拉曼光谱以及等离子体原子发射光谱等技术研究了电化学沉积钙磷陶瓷过程中,电流密度对电沉积层组成和结构的影响. 实验表明阴极表面得到的沉积物是几种钙磷盐组成的混合物,且其成份随电流密度的改变而发生较大的变化. 在电解液温度为75℃条件下,当控制电流密度较低时,沉积层主要由CaHPO4*2H2O(DCPD)和Ca8H2 (PO4)6*5H2O (OCP)组成;随着电流密度的增加,阴极表面逐渐生成Ca3(PO4)2*nH2O (TCP)和Ca10(PO4)6(OH)2 (HAP). 当电流密度大于5 mA/cm2 时,电沉积层的主要成份为羟基磷灰石(HAP).
용X사선연사、격광랍만광보이급등리자체원자발사광보등기술연구료전화학침적개린도자과정중,전류밀도대전침적층조성화결구적영향. 실험표명음겁표면득도적침적물시궤충개린염조성적혼합물,차기성빈수전류밀도적개변이발생교대적변화. 재전해액온도위75℃조건하,당공제전류밀도교저시,침적층주요유CaHPO4*2H2O(DCPD)화Ca8H2 (PO4)6*5H2O (OCP)조성;수착전류밀도적증가,음겁표면축점생성Ca3(PO4)2*nH2O (TCP)화Ca10(PO4)6(OH)2 (HAP). 당전류밀도대우5 mA/cm2 시,전침적층적주요성빈위간기린회석(HAP).
In the paper the effect of current density on the composition and structure of electrodeposition coatings of calcium phosphates was studied by XRD、Raman spectrum and ICP/AES techniques. The experimental results showed that different phases of calcium phosphates may be formed on the substrate depending on the cathodic current density, and hydroxyapatite (HAP) was the main constituent when the current density was equal to or more than 5 mA/cm2 at 75℃.