The Structure and Properties of Calcium Phosphate Ceramics Produced from Monetite and Biogenic Hydroxyapatite

被引：8
|
作者：
Sych, E. E. [1 ]
Pinchuk, N. D. [1 ]
Tovstonog, A. B. [1 ]
Golovkova, M. E. [1 ]
Kotlyarchuk, A. V. [1 ]
Evich, Ya. I. [1 ]
Skorokhod, V. V. [1 ]
Savkova, I. I. [2 ]
机构：
[1] Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, Kiev, Ukraine
[2] Natl Tech Univ, Kiev Polytech Inst, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2014年 / 53卷 / 7-8期
关键词：
biogenic hydroxyapatite; monetite; calcium pyrophosphate; tricalcium phosphate; bioceramics; structure; MECHANICAL-PROPERTIES; BONE; CONVERSION; GLASS;
D O I：
10.1007/s11106-014-9634-y
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
It is shown that porous calcium phosphate ceramics can be produced from monetite and biogenic hydroxyapatite, the starting materials being in the ratios 25 : 75, 50 : 50, and 75 : 25 wt.%. It is established that phase transitions and solid-phase reactions take place during sintering to form polyphosphate ceramics consisting of hydroxyapatite (Ca-5(PO4)(3)(OH)), beta-pyrophosphate (beta-Ca2P2O7), and beta-tricalcium phosphate (beta-Ca-3(PO4)(2)), in which beta-Ca2P2O7 and Ca-5(PO4)(3)(OH) phases are predominant, depending on starting composition. When the biogenic hydroxyapatite content changes from 25 to 75 wt.%, the grain size decreases and the pore size increases. The ceramics have 40 to 42% porosity with predominant open porosity for all compositions. The ceramics show 32-55 MPa strength, which increases with the amount of biogenic hydroxyapatite in starting composition.
引用
收藏
页码：423 / 430
页数：8
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