X.B.Zheng
,
H.Ji
,
J.Q.Huang
,
C.X.Ding
金属学报(英文版)
Titanium (Ti) and hydroxyapatite (HA) coatings have been prepared via air (APS) and vacuum plasma spraying (VPS), and then their composition, structure, bonding strength and bioactivity were examined. The results obtained reveal that in APS process many of Ti were oxidized, but in VPS the oxidization was avoided. VPS Ti coating possesses better bonding condition than APS Ti coating. As for HA coating, higher crystallinity has been obtained while the coating was deposited by VPS as compared with APS. The simulated body fluid (SBF) tests show that both of APS and VPS HA coatings possess good bioactivity. As compared with APS, VPS is recommended as a better method to deposit Ti and HA coatings that can be applied as hard tissue replacement implants.
关键词:
vacuum plasma spray
,
null
,
null
郑学斌
,
季珩
,
黄静琪
,
丁传贤
,
朱梓圆
,
张富强
无机材料学报
doi:10.3724/SP.J.1077.2006.00764
以磷酸锆载银抗菌剂作为添加剂, 制备真空等离子喷涂抗菌羟基磷灰石(HA)涂层, 并对涂层的形貌、组成、结合强度以及抗菌性能进行研究. 结果表明, 添加抗菌剂的HA涂层形貌没有发生明显改变. 当添加剂含量较大时(10wt%), 涂层中出现少量反应产物CaZr(PO4)2与Na6CaP2O9. 掺入抗菌剂之后涂层的结合强度呈上升趋势, 而且随着抗菌剂百分比的增加, 涂层结合强度随之增大. 含抗菌剂5wt%以上的HA涂层对牙龈单胞卟啉菌(Pg)、具核梭杆菌(Fn)及伴放线杆菌(Aa)具有明显的抗菌作用, 抗菌力大小依次为Pg>Fn>Aa.
关键词:
真空等离子喷涂
,
HA coating
,
antibacterial
,
silver-zirconium phosphate antimicrobial
易德亮
,
吴成铁
,
马旭兵
,
季珩
,
郑学斌
,
常江
无机材料学报
doi:10.3724/SP.J.1077.2014.13230
大气喷涂法制备的镁黄长石涂层是一种具有优良生物活性的新型骨科移植体涂层材料,但其结晶度较低,影响涂层的化学稳定性.本研究采用真空等离子喷涂法在钛合金表面制备了高结晶度的镁黄长石涂层.与大气喷涂镁黄长石涂层相比,真空喷涂镁黄长石涂层具有更高的磷灰石矿化能力,在SBF中浸泡6d后表面即沉积了一层类骨磷灰石层,浸泡14 d后表面沉积的磷灰石层的厚度约为大气涂层的4倍.真空喷涂镁黄长石涂层的离子释放明显低于大气涂层,显示出更高的化学稳定性.骨髓间充质干细胞在真空和大气喷涂镁黄长石涂层表面粘附和铺展良好,在两种涂层表面的增殖速度均明显高于HA涂层.本研究表明真空等离子喷涂的镁黄长石陶瓷涂层因其显著提高的生物活性及化学稳定性,可能更适合用作人工关节涂层材料.
关键词:
镁黄长石涂层
,
真空等离子喷涂
,
模拟体液
,
骨髓间充质干细胞
林初城
,
孔明光
,
朱慧颖
,
黄利平
,
郑学斌
,
曾毅
无机材料学报
doi:10.15541/jim20150384
采用真空等离子体喷涂技术制备了B4C-Mo复合涂层,并对其耐磨性能进行了研究.与B4C纯涂层相比,复合涂层结构更为致密,(B,Mo)C过渡相的存在改善了B4C相与Mo相之间的润湿性,进而有效提高了涂层的抗摩擦磨损性能.此外,Mo在喷涂过程中形成了大量的纳米晶,这也在一定程度上促进了复合涂层耐磨性能的提高.
关键词:
B4C-Mo复合涂层
,
耐磨性能
,
真空等离子体喷涂
