Chenlu SONG
,
Wenjian WENG
,
Kui CHENG
,
Haibo QU
,
Piyi DU
,
Ge SHEN
,
Gaorong HAN
,
Juan YANG
,
Jose M.F.Ferreira
材料科学技术（英文）
Fluorapatite/hydroxyapatite solid solution has better biological properties than other apatites, especially used as films or coatings. In this work, sol-gel preparation and in vitro behavior of fluorapatite/hydroxyapatite solid solution films on titanium alloy were investigated. Ca(NO3)2·4H22O and PO(OH)x(OEt)3-x were selected as precursors, and hexafluorophosphoric acid (HPF6) was used as a fluorine containing reagent. The Ca and P precursors were mixed with HPF6 to keep the Ca/P molar ratio 1.67. The mixtures refluxed for 12 h were used as dipping sols for the preparation of the films. The phase of the films obtained at 600°C was apatite. The F contents in the films increased with the concentrations of HPF6 in the dipping sols. The solid solution films were shown to have better stability than hydroxyapatite films, and a reasonably good bioactivity in the in vitro evaluation.
关键词:
Fluorapatite/Hydroxyapatite
,
null
,
null
,
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刘保臣
,
申长雨
,
刘春太
,
上官林建
材料导报
将短纤维增强注塑制品看作多层板并分析了注塑制品的有效弹性性能.采用Tandon-Weng模型计算了单取向短纤维增强复合材料的弹性性能,采用取向平均法计算了具有任意平面取向的单层板材料弹性常数,运用层合板理论建立了短纤维增强注塑材料的有效弹性模量计算模型.测定了特制试样中的纤维取向分布,计算了有效弹性模量,并与实验结果对比证明这种方法是有效的.
关键词:
纤维取向
,
短纤维增强复合材料
,
力学性能
,
注射成型
