کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
811178 1469140 2012 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Porous titanium materials with entangled wire structure for load-bearing biomedical applications
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
Porous titanium materials with entangled wire structure for load-bearing biomedical applications
چکیده انگلیسی

A kind of porous metal-entangled titanium wire material has been investigated in terms of the pore structure (size and distribution), the strength, the elastic modulus, and the mechanical behavior under uniaxial tensile loading. Its functions and potentials for surgical application have been explained. In particular, its advantages over competitors (e.g., conventional porous titanium) have been reviewed. In the study, a group of entangled titanium wire materials with non-woven structure were fabricated by using 12–180 MPa forming pressure, which have porosity in a range of 48%–82%. The pores in the materials are irregular in shape, which have a nearly half-normal distribution in size range. The yield strength, ultimate tensile strength, and elastic modulus are 75 MPa, 108 MPa, and 1.05 GPa, respectively, when its porosity is 44.7%. The mechanical properties decrease significantly as the porosity increases. When the porosity is 57.9%, these values become 24 MPa, 47.5 MPa, and 0.33 GPa, respectively. The low elastic modulus is due to the structural flexibility of the entangled titanium wire materials. For practical reference, a group of detailed data of the porous structure and the mechanical properties are reported. This kind of material is very promising for implant applications because of their very good toughness, perfect flexibility, high strength, adequate elastic modulus, and low cost.

Figure optionsDownload high-quality image (369 K)Download as PowerPoint slideHighlights
► The porous titanium with entangled wire structure is developed for bio-applications.
► Its pore structure, mechanical behavior and properties are investigated.
► Its average pore size can be controlled in the range of 100–500 μm.
► Its elastic modulus is comparable to that of the cancellous bone.
► It reveals superiorities in toughness, flexibility, strength and cost.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 5, Issue 1, January 2012, Pages 16–31
نویسندگان
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