Abstract
In order to improve the bonding strength of hydroxyapatite coating on carbon/carbon composites, a surface hydrophilic modification was performed on carbon/carbon composites using a combination of H2O2 and FeSO4 · 7H2O under ultraviolet irradiation. The hydroxyapatite coating was prepared by an ultrasound-assisted electrochemical deposition method. The results showed that the surface hydrophilic modification introduced a large number of oxygen-containing functional groups (C=O, C-O and COOH group) onto the surface of carbon/carbon composites. The surface hydrophily of the modified carbon/carbon composites was significantly improved with the water contact angle decreasing from 85.7 ± 4.1° to 11.9 ± 1.5°. The modified carbon/carbon composites had strong induction ability for the deposition of hydroxyapatite crystals. The hydroxyapatite showed a wavy-shaped crystal at initial deposition process and subsequently formed a compact and uniform coating. The bonding strength of hydroxyapatite coating on modified carbon/carbon composites (9.58 ± 0.40 MPa) was significantly higher than that of the coating on unmodified carbon/carbon composites (3.04 ± 0.20 MPa).
| Original language | English |
|---|---|
| Article number | 1450016 |
| Journal | Surface Review and Letters |
| Volume | 21 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2014 |
| Externally published | Yes |
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Keywords
- bonding strength
- Carbon/carbon composites
- coating
- hydroxyapatite
- surface modification
ASJC Scopus subject areas
- Surfaces and Interfaces
- Condensed Matter Physics
- Materials Chemistry
- Surfaces, Coatings and Films
Cite this
Surface hydrophilic modification for carbon/carbon composites and its effect on the bonding strength of hydroxyapatite coating. / Leilei, Zhang; Hejun, Li; Qiang, Song; Kezhi, Li; Jinhua, Lu; Wei, Li; Mikhalovsky, Sergey V.; Sheng, Cao.
In: Surface Review and Letters, Vol. 21, No. 1, 1450016, 02.2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Surface hydrophilic modification for carbon/carbon composites and its effect on the bonding strength of hydroxyapatite coating
AU - Leilei, Zhang
AU - Hejun, Li
AU - Qiang, Song
AU - Kezhi, Li
AU - Jinhua, Lu
AU - Wei, Li
AU - Mikhalovsky, Sergey V.
AU - Sheng, Cao
PY - 2014/2
Y1 - 2014/2
N2 - In order to improve the bonding strength of hydroxyapatite coating on carbon/carbon composites, a surface hydrophilic modification was performed on carbon/carbon composites using a combination of H2O2 and FeSO4 · 7H2O under ultraviolet irradiation. The hydroxyapatite coating was prepared by an ultrasound-assisted electrochemical deposition method. The results showed that the surface hydrophilic modification introduced a large number of oxygen-containing functional groups (C=O, C-O and COOH group) onto the surface of carbon/carbon composites. The surface hydrophily of the modified carbon/carbon composites was significantly improved with the water contact angle decreasing from 85.7 ± 4.1° to 11.9 ± 1.5°. The modified carbon/carbon composites had strong induction ability for the deposition of hydroxyapatite crystals. The hydroxyapatite showed a wavy-shaped crystal at initial deposition process and subsequently formed a compact and uniform coating. The bonding strength of hydroxyapatite coating on modified carbon/carbon composites (9.58 ± 0.40 MPa) was significantly higher than that of the coating on unmodified carbon/carbon composites (3.04 ± 0.20 MPa).
AB - In order to improve the bonding strength of hydroxyapatite coating on carbon/carbon composites, a surface hydrophilic modification was performed on carbon/carbon composites using a combination of H2O2 and FeSO4 · 7H2O under ultraviolet irradiation. The hydroxyapatite coating was prepared by an ultrasound-assisted electrochemical deposition method. The results showed that the surface hydrophilic modification introduced a large number of oxygen-containing functional groups (C=O, C-O and COOH group) onto the surface of carbon/carbon composites. The surface hydrophily of the modified carbon/carbon composites was significantly improved with the water contact angle decreasing from 85.7 ± 4.1° to 11.9 ± 1.5°. The modified carbon/carbon composites had strong induction ability for the deposition of hydroxyapatite crystals. The hydroxyapatite showed a wavy-shaped crystal at initial deposition process and subsequently formed a compact and uniform coating. The bonding strength of hydroxyapatite coating on modified carbon/carbon composites (9.58 ± 0.40 MPa) was significantly higher than that of the coating on unmodified carbon/carbon composites (3.04 ± 0.20 MPa).
KW - bonding strength
KW - Carbon/carbon composites
KW - coating
KW - hydroxyapatite
KW - surface modification
UR - http://www.scopus.com/inward/record.url?scp=84894668342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84894668342&partnerID=8YFLogxK
U2 - 10.1142/S0218625X14500164
DO - 10.1142/S0218625X14500164
M3 - Article
VL - 21
JO - Surface Review and Letters
JF - Surface Review and Letters
SN - 0218-625X
IS - 1
M1 - 1450016
ER -