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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/68952

    Title: 以鐵基金屬玻璃複材或金屬玻璃鍍膜製作手術用取皮刀並進行模擬切削性能之研究;The study on simulated cutting performance of surgical skin-grafting blades made by Febased bulk metallic glass composites or coated with Fe-based metallic glass thin film
    Authors: 陳致宇;Chen,Chih-Yu
    Contributors: 機械工程學系
    Keywords: 鐵基非晶質複合材料;破裂韌性;手術用取皮刀;Bulk amorphous steel composites (BASCs);Fracture toughness;Skin grafting blade
    Date: 2015-07-13
    Issue Date: 2015-09-23 14:47:18 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 鐵基非晶質合金又稱於非晶質鋼材(Bulk Amorphous Steel, BAS),具有
    本研究以Fe-Cr-Mo-C-B-Y-Co 為主要成分,根據金屬玻璃形成之三大
    合金,並以真空吸鑄法製做出直徑2~4 mm 的非晶質複合棒材,在冷卻時碳
    得改善,其破裂韌性數值有效提升至10.2 ± 0.9 MPa∙m^1⁄2,相較於未添加延性顆粒之基材有顯著提升(5.13 ± 0.9 MPa∙m1⁄2),並以此複材製作取皮刀刀片進行刀具銳利度分析。
    片上,透過取皮模擬測試以及BSI測試刀片切削性能。經過15 cm取皮測試
    後,鐵基金屬玻璃複材取皮刀、鐵基非晶質鍍膜300 nm、400 nm膜厚取皮
    優良的切割能力。;Fe-based amorphous alloys, also known as, bulk amorphous steel (BAS), exhibit not only impressive mechanical properties such as high hardness and compressive strengths but also good anti-corrosion and wear resistance. In this
    study, several BASs are made of cast iron which reduced the manufacture cost.However, all these BAS materials are extremely brittle and strongly restrict their applications as engineering or structure materials.
    The purpose of this study is to enhance the fracture toughness by dispersion strengthening method.. A series of Fe-Cr-Mo-C-B-Co-Y-Ta bulk amorphous steel
    composites (BASCs) were successfully fabricated by suction casting.X-ray diffraction(XRD) and differential scanning calorimetry(DSC) are conducted to examine the amorphous structure of these BASCs. Indentation testing and
    ultrasonic echography were applied to characterize the mechanical properties of these BASCs. The results show that all Fe-based BASCs present much higher fracture toughness (10.2±0.9 MPa∙m1/2) than the based one (5.13±0.9 MPa∙m^1/2).
    The Fe-based BASC further processed into a surgical skin-grafting blade as well as the sputter target to deposit thin film amorphous steel (TFAS) for the investigation of initial grafting ability and durability performance of 15 cmgrafting
    path in comparison with commercial one.
    Both Fe-based BASC and Fe-based TFAS blades exhibited much lower cutting energy than the commercial one. After 15cm skin-grafting test, the BSI value of BASC and TFAS skin-grafting blade still remain under blunt level
    (BSI<0.5), where the commercial one is increased from 0.35 to 0.53, which is considered as a blunt blade.
    Appears in Collections:[機械工程研究所] 博碩士論文

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