High strain rate thermoplastic demolding of metallic glasses

被引：18

作者：

Hasan, Molla ^{[1
]}

Kumar, Golden ^{[1
]}

机构：

[1] Texas Tech Univ, Dept Mech Engn, Lubbock, TX 79409 USA

来源：

SCRIPTA MATERIALIA | 2016年 / 123卷

基金：

美国国家科学基金会;

关键词：

Metallic glasses; Thermoplastic forming; Demolding; Wetting; THERMAL-EXPANSION COEFFICIENT; DEFORMATION-BEHAVIOR; SUPERCOOLED LIQUID; SURFACES; TEMPERATURE; LITHOGRAPHY; TRANSITION; POLYMERS; ADHESION; CONTACT;

D O I：

10.1016/j.scriptamat.2016.06.021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Silicon templates are ideal for thermoplastic patterning of metallic glasses but their thermal expansion mismatch prevents demolding without chemical etching. Besides limiting the template life, chemical exposure alters the surface chemistry and properties of metallic glasses. To overcome these issues, we develop thermoplastic demolding which enables template reusability and fabrication of pristine metallic glass structures. Chemical free demolding allows decoupling of topographic and compositional effects on properties of metallic glasses. We show that mechanically and chemically demolded samples exhibit distinct wetting behavior despite similar topography. The versatility of demolding technique is demonstrated for structures of different shapes and metallic glass formers. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：140 / 143

页数：4

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