TY - JOUR
T1 - Optimization of process parameters of calcium phosphate coating on C/C composites by sonoelectrodeposition technique
AU - Zhai, Yan Qiang
AU - Li, Ke Zhi
AU - Li, He Jun
AU - Liu, Hao
AU - Wang, Chuang
PY - 2007/4
Y1 - 2007/4
N2 - Bioactive calcium phosphate coatings on carbon/carbon composites were prepared by a cathode sonoelectrodeposition technique. The effect of electrolyte concentration and pH of the electrodeposition solution on morphology, structure and composition of coating on carbon/carbon composites were investigated by SEM or FE-SEM, EDAX, FTIR and XRD methods, and adhesion of coatings was also measured. The results showed that the plate-like crystals formed in high electrolyte concentration were identified to be Ca3(PO64). 2(ACP) and Ca10(PO4)6 (OH)6 (HA). With the electrolyte concentration increasing, the precipitates formed are identified to be carbonate-containing Ca10(PO4)6 (OH)2 (HA) only, the carbonate content and n(Ca)/n(P) of coating increased continuously, the size of as-deposit particles decreased. In the experimentation range of pH of the electrodeposition solution, the coating was a dense and plate-like carbonate-containing Ca10(PO4)6 (OH)2 (HA). With the pH of the electrodeposition solution increasing, thickness of plate-like crystals decreased, a more compact nanocoating can be obtained. The adhesion(5.62MPa) in low electrolyte concentration was greater than that(3.85 MPa) in high electrolyte concentration.
AB - Bioactive calcium phosphate coatings on carbon/carbon composites were prepared by a cathode sonoelectrodeposition technique. The effect of electrolyte concentration and pH of the electrodeposition solution on morphology, structure and composition of coating on carbon/carbon composites were investigated by SEM or FE-SEM, EDAX, FTIR and XRD methods, and adhesion of coatings was also measured. The results showed that the plate-like crystals formed in high electrolyte concentration were identified to be Ca3(PO64). 2(ACP) and Ca10(PO4)6 (OH)6 (HA). With the electrolyte concentration increasing, the precipitates formed are identified to be carbonate-containing Ca10(PO4)6 (OH)2 (HA) only, the carbonate content and n(Ca)/n(P) of coating increased continuously, the size of as-deposit particles decreased. In the experimentation range of pH of the electrodeposition solution, the coating was a dense and plate-like carbonate-containing Ca10(PO4)6 (OH)2 (HA). With the pH of the electrodeposition solution increasing, thickness of plate-like crystals decreased, a more compact nanocoating can be obtained. The adhesion(5.62MPa) in low electrolyte concentration was greater than that(3.85 MPa) in high electrolyte concentration.
KW - Bioactive coating
KW - C/C composite
KW - Processing optimization
KW - Sonoelectrodeposition
UR - http://www.scopus.com/inward/record.url?scp=34248395182&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:34248395182
SN - 1001-4381
SP - 27
EP - 31
JO - Cailiao Gongcheng/Journal of Materials Engineering
JF - Cailiao Gongcheng/Journal of Materials Engineering
IS - 4
ER -