Suspension thermal spraying of hydroxyapatite: Microstructure and in vitro behaviour
Suspension thermal spraying of hydroxyapatite: Microstructure and in vitro behaviour
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DOI：
10.1016/j.msec.2013.09.017
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发表时间：
2014-01-01
影响因子：
7.9
通讯作者：
De Nardo, Luigi
中科院分区：
文献类型：
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作者：
Bolelli, Giovanni;Bellucci, Devis;De Nardo, Luigi
在金属假体的非骨水泥固定中，骨传导性等离子喷涂羟基磷灰石涂层通常会促进种植体表面的骨生长。本工作探索了利用创新的高速悬浮火焰喷涂(HVSFS)技术在钛衬底上涂覆薄而均匀的羟基磷灰石涂层。所研究的高速悬浮火焰喷涂羟基磷灰石涂层致密，厚度为27-37微米，有一些横向微裂纹。片层被烧结在一起，几乎无法识别，这与传统的等离子喷涂羟基磷灰石不同。得到的结晶度为10%-70%，这取决于沉积参数和使用的二氧化钛粘结层。涂层的平均硬度低(
In cementless fixation of metallic prostheses, bony ingrowth onto the implant surface is often promoted by osteoconductive plasma-sprayed hydroxyapatite coatings. The present work explores the use of the innovative High Velocity Suspension Flame Spraying (HVSFS) process to coatTi substrates with thin homogeneous hydroxyapatite coatings.The HVSFS hydroxyapatite coatings studied were dense, 27-37 mu m thick, with some transverse microcracks. Lamellae were sintered together and nearly unidentifiable, unlike conventional plasma-sprayed hydroxyapatite. Crystallinities of 10%-70% were obtained, depending on the deposition parameters and the use of a TiO2 bond coat. The average hardness of layers with low (