Electrochemical Study on Bioceramic Coatings of Ca

Abstract

羟基磷灰石/医用金属复合材料既具有基底金属的强度和韧性又具有羟基磷灰石生物陶 瓷的优良生物活性和生物相容性因而是目前最理想的植骨代用品目前制备金属基底上羟基磷灰 石陶瓷涂层主要采用的方法是等离子喷涂技术但该技术由于等离子弧焰温度较高羟基磷灰石生 物活性陶瓷在喷涂过程中不可避免地发生相变和脆裂另一方面等离子喷涂为直线过程难以在 形状复杂和表面多孔的基底上制备均匀的陶瓷沉积层 电化学沉积方法是在温和环境条件下制备羟基磷灰石涂覆层,即在接近人体生理环境条件 下电沉积Hap微晶可以获得在化学成分和晶体结构上与人体骨组织相近的羟基磷灰石涂层从 而增加植入材料表面涂层的生物相容性和生物活性本...Having both good mechanical properties and formability of the metal substrate and excellent bioactivity and biocompatibility of hydroxyapatite bioceramic coating, hydroxyapatite/surgical metal or alloy composite is therefore considered as the best implant material for bone substitution. Currently, the plasma spray technique is extensively used by the implant industry to produce hydroxyapatite c...学位:理学博士院系专业:化学化工学院化学系_物理化学(含化学物理)学号:B1995250

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