无机材料学报

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喷涂距离和喷涂功率对羟基磷灰石涂层的影响

郑学斌; 黄民辉; 黄静琪; 张叶方; 丁传贤   

  1. 中国科学院上海硅酸盐研究所, 上海 200050
  • 收稿日期:1998-09-05 修回日期:1998-09-23 出版日期:1999-10-20 网络出版日期:1999-10-20

Effect of Spray Distance and Spray Power on Properties of Plasma Sprayed Hydroxyapatite Coatings

ZHENG Xue-Bin; HUANG Min-Hui; HUANG Jing-Qi; ZHANG Ye-Fang; DING Chuan-Xian   

  1. Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050 China
  • Received:1998-09-05 Revised:1998-09-23 Published:1999-10-20 Online:1999-10-20

摘要: 本文以Ti-6Al-4V合金为基体材料,采用等离子喷涂方法,在不同喷涂距离和喷涂功率下制备羟基磷灰石(HA)涂层,研究喷涂距离和喷涂功率这两个重要的喷涂参数对涂层结构和组成的影响.使用扫描电子显微镜(SEM)观察了羟基磷灰石涂层的形貌.涂层的相组成由X射线衍射谱仪(XRD)分析而得.并使用X射线荧光谱仪(XRF)测定了涂层的Ca/P摩尔比.研究结果表明,喷涂距离对羟基磷灰石涂层的形貌、相组成以及Ca/P摩尔比有着明显的影响.随着喷涂距离的增大,羟基磷灰石粉末的熔化状态得到改善,涂层的显微结构较为致密.然而,喷涂距离的增大使得涂层的非晶化更加严重,涂层中非晶相含量增大.在实验范围内,喷涂功率对涂层结构和相组成的影响不明显.Ca/P比测定显示,等离子喷涂羟基磷灰石涂层均为缺磷涂层,Ca/P比随喷涂距离的增大而降低,随喷涂功率的增大而增大.

关键词: 羟基磷灰石涂层, 等离子喷涂, 喷涂距离, 喷涂功率, Ca/P摩尔比

Abstract: Hydroxyapatite (HA) coatings on Ti-6Al-4V substrate were prepared by atmospheric plasma spraying method under a variety of
spray distances and spray powers. The structure of HA coatings were then studied by Scanning Electron Microscopy (SEM), and X-ray
Diffractometer (XRD) was applied to determine the phase composition of the coatings. The Ca/P mole ratios of the coatings were examined
by X-ray Fluoroscopy (XRF). Experimental results indicated that with the increase of spray distance, the melting state of the HA coating
was improved but the crystallinity of coating was reduced. However, the surface images and crystallinity of coatings were not influenced
by spray power significantly. The Ca/P ratio showed a higher value at shorter spray distance but increased with increase in spray power.

Key words: HA coating, plasma spraying, spray distance, spray power, Ca/P mole ratio

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