高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

锌掺杂对β-磷酸三钙晶体结构和分子结构的影响

冯祖德; 金浦; 宓锦校; 邱星屏   

  1. 厦门大学材料科学与工程系 厦门 361005
  • 收稿日期:2002-03-04 修回日期:2002-05-13 出版日期:2003-03-20 网络出版日期:2003-03-20

Effect of the Substitution of Zinc on the Microstructure of β-Tricalcium Phosphate

FENG Zu-De; JIN Pu; MI Jin-Xiao; QIU Xing-Ping   

  1. Department of Materials Science and Engineering; Xiamen University; Xiamen 361005; China
  • Received:2002-03-04 Revised:2002-05-13 Published:2003-03-20 Online:2003-03-20

PDF (PC)

1031

被引次数

7

摘要： 采用液相方法合成系列比例掺杂锌的磷酸三钙微粉,并利用多晶转靶X射线衍射仪和傅立叶变换红外光谱仪研究所得产物的相组成、晶体结构和分子结构的变化规律.研究结果表明,掺杂锌比例在20 atom％以下的产物为锌在磷酸三钙中的置换固溶体.当掺杂锌的比例继续增高,出现α-CaZn2(PO4)2相.晶格常数测定表明,掺杂锌含量<10atom％时,β-TCP的a(b)轴和c轴随掺杂锌含量的增大均呈现线性减小.然而当掺杂锌含量超过10％以后,c轴随掺杂锌的继续增加反而变大.红外光谱研究表明,β-TCP的P-O键的伸缩振动峰和O-P-O键的弯曲振动峰的位置也随掺杂锌含量的增加而呈线性变化.

关键词: 磷酸三钙, 锌, 掺杂

Abstract: X-ray diffraction and infrared absorption analysis were carried out on zinc-doped beta-tricalcium phosphate prepared by a liquid-phase reaction technique. Quantitative
methods and regression analysis were used to calculate the variation of lattice constants of TCP, and the shift or degeneracy of the PO3-4 infrared
absorption bands. X-ray diffraction analysis indicates that zinc can substitute calcium up to 20 atom %, inducing a statistically significant
decrease of the lattice constants a and b. As the zinc content in TCP increases beyond 20 atom %, X-ray diffraction analysis shows the appearance
of a new phase α-CaZn2(PO4)2. However, the effect of substitution of zinc on the lattice constant c is abnormal. The substitution
of Zn up to 10 atom % results in a general decrease of the lattice constants c, while it increases as the content of zinc in TCP increases beyond 10%.
FTIR spectra reveal that the substitution of Zn up to 10 atom% results in a statistically significant increase of the asymmetric P--O stretching vibration
absorption band at 1045 and 1120cm-1 (P<0.05) and a statistically significant decrease of O--P--O bending vibration absorption band at 605cm-1 (P=0.00085),
respectively.

Key words: tricalcium phosphate, zinc, substitution

中图分类号: