Porous hydroxyapatite coatings were prepared on porous soft polyurethane foam plastics base using pretreatment（unoil,sensitization,activation,peptization） and electrochemical deposition method. The purpose of experiment is to improve the bonding strength between the coating and the base and to carry on previous technical process research and theory analysis for its application.The experiment of pretreatment shows that porous soft [...]
Titanium and its alloys have excellent mechanical strength, good corrosion resistance, and biocompatibility:being widely used for producing implants and biomedical devices, such as hip joint prosthesis, knee joint prosthesis, and dental implants. One factor that should be taken into account is the mismatch of Young’s modulus between bulk Ti-based metals (90-110 GPa) and bone (0.3-30 [...]
As the increase of life quality, further improvements of bioactivity and safety of biomaterials are very much demanded. Hydroxyapatite (HAp) coated titanium is an ideal biomaterial commonly used for prosthesis and implants in surgery and orthopaedics. Hydroxyapatite, the main inorganic compound of natural bone, is osteoconductive and able to accelerate bone ingrowth. In addition, it [...]
Titanium and its alloy have been widely used in orthopedics due to their excellent mechanical property, biocompatibility and anti-corrosion capability. However, it is bioinert and cannot form direct bonding with bone tissue. Hydroxyapatite (HA) is the main inorganic composition of bone tissue and has been used for hard tissue repair because it has good biocompatibility [...]
In the present article, a systematic research was conducted on the electrochemical deposition of Magnesium-substituted/Strontium-substituted hydroxyapatite (Mg-HAp/Sr-HAp). By controlling various experimental parameters, the nanometer Mg-HAp/Sr-HAp coatings with different amount of Mg/Sr were deposited on the titanium surface. Homogeneous coatings were obtained by electrochemical method in electrolytes containing (Ca, Mg or Sr)Cl2·6H2O, NH4H2PO4 with (Ca+Mg)/P or [...]
Bioactive hydroxylapatite (HA) coatings are commonly used to improve the biocompatibility and osteoinductivity of the titanium. HA coated titanium has the advantages of metals and ceramics and has been considered as one of the most promising bone replacement materials. Recently, there is a tendency to develop HA-contained composite coatings to obtain new type of coatings [...]
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