Coatings on zirconia for medical applications

被引:114
作者
Ferraris, M
Verné, E
Appendino, P
Moisescu, C
Krajewski, A
Ravaglioli, A
Piancastelli, A
机构
[1] Politecn Torino, Dept Mat Sci & Chem Engn, I-10129 Turin, Italy
[2] CNR, IRTEC, I-48018 Faenza, Italy
关键词
bioactive coatings; glasses; glass-ceramics;
D O I
10.1016/S0142-9612(99)00209-4
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
In order to combine the mechanical properties of a high-strength inert ceramic (yttria-stabilised zirconia, ZrO(2)-3%Y(2)O(3), defined as zirconia in the text) with the specific properties of bioactive materials, some zirconia samples were coated by two bioactive phosphosilicate glasses and glass-ceramics: RKKP and AP40. Coatings of about 200-300 mu m thickness were prepared by a simple and low-cost firing method. They were characterised by optical and scanning electron microscopy (SEM) and compositional analysis (EDS). The adhesion of the coatings on zirconia was tested by shear tests. Vickers indentations at the coating/zirconia interface were performed in order to observe the crack propagation path. The reactivity of glasses and glass-ceramics coatings towards a simulated body fluid (SBF), having the same ion concentration as that of human plasma, was evaluated and compared to that of the bulk glass and glass-ceramics, by examining the morphology of the reaction layer formed on the surface of the coated zirconia after one month of soaking in the SBF at 37 degrees C. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:765 / 773
页数:9
相关论文
共 25 条
[1]  
Berger G, 1992, 4 WORLD BIOM C APR 2, P33
[2]  
BUSHBY RS, 1993, MATER SCI TECH SER, V9, P417, DOI 10.1179/026708393790350495
[3]   Bioactive materials [J].
Cao, WP ;
Hench, LL .
CERAMICS INTERNATIONAL, 1996, 22 (06) :493-507
[4]   Glass-ceramic joining and coating of SiC/SiC for fusion applications [J].
Ferraris, M ;
Salvo, M ;
Isola, C ;
Montorsi, MA ;
Kohyama, A .
JOURNAL OF NUCLEAR MATERIALS, 1998, 258 :1546-1550
[5]  
HOLAND W, 1993, ADV SERIES CERAMICS, V1, P125
[6]  
Hulbert S. F., 1993, ADV SERIES CERAMICS, V1, P25
[7]   Joining of surface modified carbon carbon composites using a barium-aluminum-borosilicate glass [J].
Isola, C ;
Salvo, M ;
Ferraris, M ;
Montorsi, MA .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1998, 18 (08) :1017-1024
[8]  
JANA C, 1995, GLASTECH BER-GLASS, V68, P117
[9]  
KAS HH, 1973, Patent No. 2349859
[10]   CHEMICAL-REACTION OF BIOACTIVE GLASS AND GLASS-CERAMICS WITH A SIMULATED BODY-FLUID [J].
KOKUBO, T ;
KUSHITANI, H ;
OHTSUKI, C ;
SAKKA, S ;
YAMAMURO, T .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 1992, 3 (02) :79-83