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一种新型仿生骨小梁的摩擦系数
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1.北京市春立正达医疗器械股份有限公司,北京 101100;2.有研医疗器械(北京)有限公司,北京 102200

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基金项目:

中国博士后科学基金


Friction Coefficient of a Novel Bionic Trabecular Bone
Author:
Affiliation:

1.Beijing Chunlizhengda Medical Instruments Co., Ltd, Beijing 101100, China;2.GRIMED Medical (Beijing) Co., Ltd, Beijing 102200, China

Fund Project:

National Natural Science Foundation of China (51401027); China Postdoctoral Science Foundation (2016M591040)

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    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。

    Abstract:

    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.

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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.]
DOI:XX. XXXX/j. issn.1002-185X.2021.08.017

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历史
  • 收稿日期:2020-07-04
  • 最后修改日期:2021-07-27
  • 录用日期:2020-09-18
  • 在线发布日期: 2021-09-07
  • 出版日期: 2021-08-31