CAJ | 학술논문

采用等离子体喷涂法在炭/炭复合材料基体上制备了羟基磷灰石涂层,并对所制材料开展体外模拟和试验.结果表明:在体外模拟生理环境的Ringer溶液中,涂层组成相随浸泡时间发生变化.涂层表面有新生羟基磷灰石结晶析出并聚集长大.骨内种植试验期间,动物末出现排异和炎症反应,涂层与基体结合良好.组织学观察发现,涂层与骨界面处有明显的组织改建和新骨形成形态.炭/炭复合材料表面等离子体喷涂羟基磷灰石涂层作为一种潜在的骨组织修复材料具有良好的应用前景.
채용등리자체분도법재탄/탄복합재료기체상제비료간기린회석도층,병대소제재료개전체외모의화시험.결과표명:재체외모의생리배경적Ringer용액중,도층조성상수침포시간발생변화.도층표면유신생간기린회석결정석출병취집장대.골내충식시험기간,동물말출현배이화염증반응,도층여기체결합량호.조직학관찰발현,도층여골계면처유명현적조직개건화신골형성형태.탄/탄복합재료표면등리자체분도간기린회석도층작위일충잠재적골조직수복재료구유량호적응용전경.
Hydroxyapatite (HA) coatings were prepared on carbon/carbon (C/C) composites by plasma spraying and tested by in vitro and in vivo methods. The X-ray diffraction results indicated that the coatings consisted of HA, α-trical- cium phosphate, and tetracalcium phosphate. The in vitro biological behavior of the HA coatings was studied in a Ringer solution. With increasing immersion time, new particles appeared on the surface of the coatings and these particles be- came bigger through agglomeration. In the days after the implantation, the experimental animals had no inflammation and rejection, and the coatings were firmly attached to the substrate. Histological observation showed that there was obvious bone tissue reconstruction on the surface of the coatings. In this light, the HA coatings plasma-sprayed on C/C composites have excellent biological behavior and show promise as a bone repairing material.