高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 281.

• Chemistry in Materials Sciences • 上一篇    下一篇

Preparation and Characterization for the Electrodeposited Hybrid Coating of Calcium Phosphate/Chitosan on Ti Alloy Surface

HU Ren, HU Hao-Bing, LIN Chang-Jian   

  1. State Key Laboratory for Physical Chemistry of Solid Surface, Department of Materials Science and Engineering, Department of Chemistry, Xiamen University, Xiamen 361005
  • 出版日期:2000-12-31 发布日期:2000-12-31
  • 基金资助:

    This work is supported by the National Natural Science Foundation under Grant No. 29873039.

Preparation and Characterization for the Electrodeposited Hybrid Coating of Calcium Phosphate/Chitosan on Ti Alloy Surface

HU Ren, HU Hao-Bing, LIN Chang-Jian   

  1. State Key Laboratory for Physical Chemistry of Solid Surface, Department of Materials Science and Engineering, Department of Chemistry, Xiamen University, Xiamen 361005
  • Online:2000-12-31 Published:2000-12-31
  • Supported by:

    This work is supported by the National Natural Science Foundation under Grant No. 29873039.

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摘要：

Hydroxyapatite (HA) formulated as Ca10(PO4)6(OH)2 becomes a favorable material for implants because of its chemical similarity to the calcium phosphate minerals present in biological hard tissue. Many efforts have been made in recent years in the development of processing methods for depositing hydroxyapatite on implant alloy substrate in order to have high strength, good processability, suitable specific density, excellent corrosion resistance in the physiological environment and good affinity to the living body. The plasma spray technique is commonly used in the HA coating on implants. The major problem for the plasma spray, however, is the decomposition and phase transformation of hydroxyapatite during the spray coating process. Electrochemical techniques including electrophretic deposition and electro-deposition are being developed as an alternative method for producing hydroyapatite coated composite material. It is very desirable at present to further strengthen the coating and bond it to the metal substrate, and to increase the bioactivity of hydroxyapatite coatings as well, which is very important for forming a strong chemical bond with natural bone as an implant material.

Abstract:

Hydroxyapatite (HA) formulated as Ca10(PO4)6(OH)2 becomes a favorable material for implants because of its chemical similarity to the calcium phosphate minerals present in biological hard tissue. Many efforts have been made in recent years in the development of processing methods for depositing hydroxyapatite on implant alloy substrate in order to have high strength, good processability, suitable specific density, excellent corrosion resistance in the physiological environment and good affinity to the living body. The plasma spray technique is commonly used in the HA coating on implants. The major problem for the plasma spray, however, is the decomposition and phase transformation of hydroxyapatite during the spray coating process. Electrochemical techniques including electrophretic deposition and electro-deposition are being developed as an alternative method for producing hydroyapatite coated composite material. It is very desirable at present to further strengthen the coating and bond it to the metal substrate, and to increase the bioactivity of hydroxyapatite coatings as well, which is very important for forming a strong chemical bond with natural bone as an implant material.

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