A5073803905- Aluminum Alloys Composites Properties
- Metallic Glasses and Amorphous Alloys
- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Microstructure and mechanical properties
- Additive Manufacturing Materials and Processes
- Aluminum Alloy Microstructure Properties
- Advanced materials and composites
- Electromagnetic wave absorption materials
- Additive Manufacturing and 3D Printing Technologies
- Radical Photochemical Reactions
- Intermetallics and Advanced Alloy Properties
- Metal and Thin Film Mechanics
- Anodic Oxide Films and Nanostructures
- Nanoporous metals and alloys
- Cultural Heritage Materials Analysis
- Shape Memory Alloy Transformations
- Conservation Techniques and Studies
- Pigment Synthesis and Properties
- Color Science and Applications
- Titanium Alloys Microstructure and Properties
- Magnesium Alloys: Properties and Applications
- Phase-change materials and chalcogenides
- Glass properties and applications
- Hydrogen Storage and Materials
Sejong University
2015-2024
Korea National University of Cultural Heritage
2020-2022
Metropolitan Museum of Art
2018-2019
LG (South Korea)
2019
Pusan National University
2013
Kwangwoon University
2001-2002
Mokpo National University
1994
Clemson University
1993
ABSTRACT Factors affecting barrier properties [oxygen permeability (OP) and water vapor (WVP)] mechanical [tensile strength (TS) elongation (E)] were investigated for methyl cellulose (MC) hydroxypropyl (HPC) films. OP, WVP TS of MC HPC films increased as the molecular weight (MW) increased. E MW increased, but was highest intermediate 370,000. not a function thickness, slowly film thickness OP relatable to decreased both types concentration plasticizers Plasticizers enhanced or retarded...
Grain protein-based films containing mixtures of glycerin and polyethylene glycol (PEG) as plasticizers were prepared evaluated for water vapor permeability (WVP), tensile strength (TS), elongation (E). Changes in mechanical properties during storage also studied. The PEG produced opposite trends E wheat gluten corn-zein films. TS increased the decreased ratio glycerin/PEG decreased. Corn-zein only very brittle (E 4%), improved to 94% when mL PEG/g protein was 0.39. WVP both Also, total...
The outstading mechanical properties of bimodal ultrafine eutectic composites (BUECs) containing length scale hierarchy in structure were demonstrated by using AFM observation surface topography with quantitative height measurements and interpreted light the details deformation mechanisms three different interface modes. It is possible to develop a novel strain accommodated for triggering interface-controlled modes; (I) rotational boundary mode, (II) accumulated mode (III) individual mode. A...
Phase morphology and the distribution of strengthening phase generally have a strong influence on movement dislocations. The presence minor alloying element Mg in Cu–30Fe alloy significantly affects both phase. Dendritic α-Fe is transformed into spherical because changes chemical composition during solidification process. leads to formation secondary phase-separated Cu within increasing heterogeneity gradient size increased volume fraction enhanced by separated Cu, refinement α-Fe, degree...
In the present study, microstructural evolution and modulation of mechanical properties have been investigated for a Co-Cr-Mo (CCM) ternary eutectic alloy by addition small amount copper (0.5 1 at.%). The observations reveal distinct dissimilarity in structure such as broken lamellar well-aligned an increasing volume fraction Co lamellae addition. This leads to improved plasticity from 1% 10% without typical tradeoff between overall strength compressive plasticity. Moreover, investigation...
In the present study, novel AlCoCrNi high entropy nitride (HEN) films were deposited on Si substrate by a reactive direct current magnetron sputtering system. order to investigate influence of parameters microstructure and mechanical properties film, nitrogen flow ratio (RN: 25–100%) process pressure (1.33 × 10−1–1.33 Pa) controlled, respectively. All identified as an amorphous phase with composition near equiatomic ratios, regardless conditions ratios pressures. However, limited found for...