中国有色金属学报(英文版), 2017, 27(1): 125-133.
10.1016/S1003-6326(17)60014-1
采用 SEM、TEM、XRD 和 EDX 等试验手段对经150~400 V 电压微弧氧化处理后工业纯钛(Ti)和Ti?40%Nb(Ti?40Nb)(质量分数)合金表面磷酸钙(CaP)涂层的显微组织、物理和力学性能以及化学特性进行研究。结果表明：在两种基体上所得到的涂层厚度、粗糙度和结构元尺寸显示出相似的线性特征且与处理电压有关。扫描电镜(SEM)分析表明，磷酸钙涂层为多孔形态，表面呈粗糙浮雕状。XRD和TEM分析结果表明，微弧磷酸钙涂层呈非晶态结构。当氧化电压增加至300~400 V时，涂层中形成了结晶相，如CaHPO4、β-Ca2P2O7。经过退火处理，涂层中形成复杂的多相结构，如CaTi4(PO4)6、β-Ca2P2O7、TiP2O7、TiNb(РО4)3、TiO2、NbO2和Nb2O5。当氧化电压为200~250 V、处理时间为5~10 min时，在工业纯钛和 Ti?40Nb 合金表面形成的涂层显示出最佳特性，其厚度为40~70μm，孔隙率为20%~25%，粗糙度(Ra)为2.5~5.0μm，粘合强度为15~30 MPa，Ca与P最佳摩尔比为0.5~0.7。
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