摘要
人工合成的生物活性陶瓷被广泛应用于金属内植入体表面用以修复或置换缺损的骨组织。使用自制的往复试验机,在6.5 mm/s的滑动速度和不同载荷(1 N和2 N)下对溶胶-凝胶法制备的生物活性陶瓷羟基磷灰石(HAP∶Ca10(PO4)6(OH)2)和二氧化钛涂层,以及羟基磷灰石/二氧化钛复合涂层进行了摩擦学性能的研究。结果显示,由不同工艺路线制备的HAP涂层的抗磨性有一定的差异,其中采用有机磷酯前驱体法制备的HAP涂层的抗磨性较好,但它们的抗磨性均差于二氧化钛涂层;羟基磷灰石/二氧化钛复合涂层的抗磨性与两者的复合方式有关,其中非晶态结构的复合涂层的抗磨性最佳。
Synthetic bioceramic hydroxyapatite （ HAP： Ca10 （ PO4 ） 6 （ OH ） 2 ）, titania and their composites are widely used as the surface films on metal implants for repair or replacement of fractured bone tissue. The tribological behaviors of the sol-gel derived bioceramic films on Ti6AlgV plates were investigated on a sliding reciprocating friction tester both under 1 N and 2 N. The results show that there are remarkable differences in anti-wear property of HAP films derived from different sol - gel routes. HAP film consisting of nanometer crystals derived from the sol using organic phosphorus precursor shows better anti-wear property. TiO2 film is superior to the HAP films due to its lower friction coefficient and higher wear resist- ance. The anti-wear properties of HAP/TiO2 composite films are relative to the phases of the mixtures. The HAP/TiO2 composite film consisting of amorphous particles shows optimal friction reduction and wear resistance.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2006年第11期50-52,共3页
Lubrication Engineering
基金
国家自然科学基金资助项目(50235020)
