许奎雪,刘伟,程曦,潘超,王振国,袁志山,王吕武.一种新型仿生骨小梁的摩擦系数[J].稀有金属材料与工程,2021,50(8):2777~2782.[Xu Kuixue,Liu Wei,Cheng Xi,Pan Chao,Wang Zhenguo,Yuan Zhishan,Wang Lvwu.Friction Coefficient of a Novel Bionic Trabecular Bone[J].Rare Metal Materials and Engineering,2021,50(8):2777~2782.]
一种新型仿生骨小梁的摩擦系数
投稿时间:2020-07-04  修订日期:2021-07-27
中文关键词:  生物材料  摩擦系数  仿生骨小梁  3D打印
基金项目:中国博士后科学基金
中文摘要:
      研究了一种新型仿生骨小梁结构的植入物的摩擦系数,该新型骨小梁结构采用Ti-6Al-4V合金粉末进行3D打印制备。从牛骨中取皮质骨和松质骨作为摩擦配副。从2种结构的起始接触角测试结果可知,仿生结构的接触角(87.7°)要比均匀骨小梁结构的接触角(96.9°)小一些,说明其表面润湿性相对较好。对于均匀骨小梁结构而言,其平均摩擦系数在0.71~0.82之间,明显低于仿生骨小梁结构的摩擦系数(0.82~0.99)。均匀骨小梁结构的最大静摩擦系数为0.99~1.26,而仿生骨小梁结构的最大静摩擦系数为1.52~1.96。仿生骨小梁的最大静摩擦系数1.96是在加载为10 N,摩擦配副为皮质骨时获得的。结果表明,新型仿生骨小梁结构的摩擦系数明显高于均匀骨小梁结构。因此,新型仿生骨小梁结构可以在骨-种植体界面提供足够的摩擦力,从而实现植入物初步稳定性。
Friction Coefficient of a Novel Bionic Trabecular Bone
英文关键词:biomaterials  COF  bionic trabecular bone  3D printing
英文摘要:
      The coefficient of friction (COF) of a novel bionic trabecular structure that was manufactured through 3D printing with Ti-6Al-4V power was investigated. Cortical and spongy bones were used as counterparts. The contact angle results show that the bionic structure has better surface wettability than the homogeneous structure at the early-stage. However, the two structures have highly hydrophilic surface. For homogeneous trabeculae, the average values of COF range from 0.71 to 0.82, which are significantly lower than the values of 0.82~0.99 for the bionic trabeculae. The static COF values range from 1.52 to 1.96 for the bionic trabeculae and 0.99 to 1.26 for the homogeneous trabeculae. The maximum static COF value of 1.96 is acquired at 10 N for the cortical bone against the bionic trabeculae. The results indicate that the bionic trabecular structure has a higher COF than the homogeneous trabeculae and other components. Hence, the novel bionic trabecular structure can provide sufficient friction at the bone-implant interface, thus achieving primary stability.
作者单位E-mail
许奎雪 北京市春立正达医疗器械股份有限公司北京 101100 xukuixue@clzd.com 
刘伟 北京市春立正达医疗器械股份有限公司北京 101100  
程曦 北京市春立正达医疗器械股份有限公司北京 101100  
潘超 北京市春立正达医疗器械股份有限公司北京 101100  
王振国 北京市春立正达医疗器械股份有限公司北京 101100 wangguo8356@163.com 
袁志山 有研医疗器械(北京)有限公司北京 102200  
王吕武 有研医疗器械(北京)有限公司北京 102200  
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