研究目的
Investigating and comparing the CaP electrochemical deposition process on 3D SLM-Ti scaffolds and on 2D SLM-Ti sheets, for better understanding of the nucleation and growth behaviors of CaP coating on the entire surface within porous SLM-Ti electrodes.
研究成果
The nucleation and growth behaviors of the electrodeposition of CaP coating on 3D surfaces of SLM-Ti scaffolds were studied. The differences of CaP electrodeposition mechanism between 3D and 2D SLM-Ti substrates are mainly attributed to the non-uniform distribution of the potential and current inside SLM-Ti scaffolds. The results provide the necessary data for fine-tuning deposition parameters to obtain the CaP coating with uniform physicochemical properties.
研究不足
The non-uniform distribution of the potential and current inside porous SLM-Ti electrodes is a critical unsolved problem, which affects the uniformity of the CaP coating deposition.
1：Experimental Design and Method Selection:
The study involved electrodeposition of CaP on SLM-Ti scaffolds using a three-electrode cell. The methodology included chronoamperometry, cyclic voltammetry (CV), and EIS measurements to analyze the deposition process.
2：Sample Selection and Data Sources:
Rectangular porous SLM-Ti scaffolds were fabricated using a SLM 125HL machine. The samples were sandblasted to eliminate the effect of surface roughness on the electrodeposition process.
3：List of Experimental Equipment and Materials:
Equipment included a CHI-660D electrochemical station, a platinum sheet as the auxiliary electrode, and a Ag/AgCl micro-electrode as the reference electrode. Materials included CaCl2 and NH4H2PO4 for the deposition solution.
4：Experimental Procedures and Operational Workflow:
The electrodeposition was carried out in a solution containing CaCl2 and NH4H2PO4. The samples were then rinsed with deionized water and dried under vacuum.
5：The samples were then rinsed with deionized water and dried under vacuum.
Data Analysis Methods:
5. Data Analysis Methods: The surface morphology was examined by field emission scanning electron microscopy, and the phase composition was identified by XRD analysis.
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