研究生: |
田弘宇 DanielTien |
---|---|
論文名稱: |
鐵基與鎳基非晶塊狀材料之開發 The Study of Novel Fe- and Ni-Based Bulk Metallic Glasses |
指導教授: |
金重勳
Tsung-Shune Chin |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 材料科學工程學系 Materials Science and Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 103 |
中文關鍵詞: | 鐵基 、鎳基 、非晶態 、塊狀金屬玻璃 |
外文關鍵詞: | Fe-Based, Ni-Based, Amorphous, Bulk Metallic Glasses |
相關次數: | 點閱:3 下載:0 |
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由於非晶帶材尺寸之侷限使其應用上有諸多限制,近年來世界各國致力於開發新的非晶塊材合金系統,相對的使非晶的理論面與應用面蓬勃發展。本論文目的為開發具強非晶能力之非晶合金塊材,主要為鐵基非晶塊狀軟磁材料與鎳基非晶塊材。鐵基非晶材料之設計依據為著名的高導磁率Sendust合金,仿效其成分而開發高導磁率非晶合金塊材,並研究其軟磁特性;鎳基非晶合金塊材之研究目的為開發簡單組成且具有強非晶能力之塊材,並研究其機械性質與抗腐蝕能力。
將所設計出之鐵基與鎳基合金成份利用銅模鑄造法,鑄造不同直徑棒材,兩者皆具有塊狀非晶形成能力,可達直徑2 mm非晶。利用鐵基合金系具2 mm非晶形成能力成分Fe67Al4Si8B15Nb1Ta1Zr1,進一步製作非晶環狀式樣,經應力退火,量測初導磁率已達到原合金Sendust之92%;鎳基非晶合金之維氏硬度均為Hv 950以上,Ni58Ta36Sn6之破裂強度更可達1192 MPa,並具有絕佳之耐蝕性。
The size limitation of amorphous ribbons greatly restricts industrial applications, many groups have heavily devoted themselves to investigating novel Bulk Metallic Glasses (BMGs) in these two decades. Therefore, the studies of new BMGs established the glass forming theories and led more popular applications.
The purpose of this research is to develop new Fe- and Ni-based BMGs with good glass forming ability. The motivation and design of Fe-based BMGs is based on the composition of the Sendust (Fe-Al-Si) alloy that has a very high permeability. The aim of exploring new Ni-based BMGs is to develop simple ternary Ni-based BMGs with good mechanical properties and corrosion resistance.
Both series of alloys exhibit good glass forming ability to form bulk glassy rods with a diameter up to 2 mm by conventional copper-mold casting method. The initial permeability of the Fe-Al-Si-based BMGs Fe67Al4Si8B15Nb1Ta1Zr1 achieves 92% of Sendust after heat treatment. The hardness of Ni-based BMGs are higher than Hv 950, and the highest fracture strength of Ni-Ta-Sn alloy system in Ni58Ta36Sn6 reaches 1192 MPa, with extremely high corrosion resistance.
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