飛秒雷射誘導鐵基金屬玻璃週期性表面結構的特徵

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彭承洋(Cheng-Yang Peng) 查詢紙本館藏

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論文名稱

飛秒雷射誘導鐵基金屬玻璃週期性表面結構的特徵
(Characterizations of Femtosecond Laser-induced Subwavelength Surface Structures on Fe-based Metallic Glass)

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摘要(中)

近年來金屬玻璃(Metallic Glass，MG)的發明在工業領域中有著多項技術應用，使得金屬玻璃的發明引起了廣泛的興趣。在所有類型的MG中，鐵基金屬玻璃(Fe-based MG)具有較高的機械強度，良好的熱穩定性,強的耐腐蝕性，優異的軟磁性能和相對其他金屬玻璃基材較低的生產成本，因此是一個獨特且具有商業競爭力的材料。本研究主要以飛秒雷射(Femtosecond laser)誘導鐵基金屬玻璃，於材料表面產生週期性表面結構，藉由改變加工參數已進行一連串的表面形貌及特徵的探討，再藉由不同的表面形貌組合而成的大面積結構，分別比較討論耐腐蝕性、色彩表現及用於翻模應用的可行性，以材料的特性配合雷射加工後的結構，解決現有模具及後加工等相關問題，以減少繁複的工序。

摘要(英)

In recent years, metallic glass (MG) has several technical applications in the industrial field, making metallic glass aroused widespread interest. Among all types of MG, Fe-based metallic glass (Fe-based MG) is a unique and commercially competitive material, which has high mechanical strength, good thermal stability, strong corrosion resistance, excellent soft magnetic properties, and cheaper cost than other metallic glass substrates. In this study, the femtosecond laser was used to induce Fe-based MG to produce sub-wavelength periodic surface structures on the surface of the material. By changing the laser machining parame-ters, a series of surface morphology and characteristics have been discussed. On the other hand, with a large-area structure composed of different surface morphologies, we compare the corrosion resistance, color performance, and feasibility of mold application, and use the characteristics of the material to match the structure after laser processing, and solve the related problems of existing molds and post-processing to reduce complicated procedures.

關鍵字(中)

★ 鐵基金屬玻璃
★ 飛秒雷射誘導週期性表面結構
★ 耐腐蝕性
★ 色彩表現
★ 翻模應用

關鍵字(英)

★ Fe-based metallic glass
★ femtosecond laser-induced periodic surface structure(F-LIPSS)
★ corrosion resistance
★ color performance
★ mold application

論文目次

中文摘要 I
ABSTRACT VI
CONTENTS VII
LIST OF FIGURES X
LIST OF TABLES XIII
Chapter 1 Introduction 1
1-1 Background 1
1-2 Overview 3
Chapter 2 Literature review 10
2-1 Introduction and history of MG 10
2-2 Fe-based BMG 14
2-2-1 The historical development of Fe-based MG 14
2-2-2 Application of Fe-based BMG 16
2-3 Laser micromachining of MG 17
2-4 Method of laser marking for colorization 19
2-4-1 Laser oxide layer 20
2-4-2 Laser induced periodic surface structures (LIPSS) 23
2-4-3 Laser surface nanoparticles & nanostructures 30
2-4-4 Comparison of laser materials surface coloring technology 35
2-5 Motivation and Innovation 37
Chapter 3 Experimental details 38
3-1 Structure and process of the experiment 38
3-2 Preparation of Fe-based BMG 38
3-2-1 Preparation and smelting of ingots 38
3-2-2 Manufacturing of Fe-based BMG plate 39
3-2-3 Pre-processing of Fe-based BMG 40
3-3 Introduction of laser system 41
3-3-1 Femtosecond laser system device and optical path design 41
3-3-2 Planning of laser processing parameters 42
3-4 Analysis tools for Fe-based BMG before and after machining 43
3-4-1 Amorphous, non-oxidizing and spectral characteristics of Fe-based BMG 43
3-4-2 2D-Fast fourier transformation (FFT) to analyze periodicity 44
3-4-3 Measurement of line width and surface roughness 45
3-4-4 Corrosion resistance - electrochemical testing 45
3-4-5 Observation Method of LIPSS Space Color 46
3-4-6 The mold-over of LIPSS with PDMS 47
3-5 Equipment and testing instruments 47
Chapter 4 Results and Discussion 49
4-1 Femtosecond LIPSS of Fe-based BMG (F-LIPSS) 49
4-1-1 Surface treatment and characteristics 49
4-1-2 The relationship between fluence and periodic structure 51
4-1-3 Frequency relationship between fluence and periodic structure 55
4-1-4 The relationship between fluence and machined line width and roughness 58
4-2 Application performance of LIPSS of fe-based BMG 60
4-2-1 Corrosion resistance of different LIPSS of Fe-based BMG 61
4-2-2 The feasibility of Fe-based BMG mold 63
4-2-3 Color performance ability of LIPSS 64
Chapter 5 Conclusions 69

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指導教授

何正榮(Jeng-Rong Ho)

審核日期

2021-1-26

推文