scholarly journals Analysis of sheet surface roughness change under contact with flat and spherical indenters

2018 ◽  
Vol 55 (06) ◽  
pp. 413-428
Author(s):  
T. TRZEPIECINSKI ◽  
Ł. BĄK ◽  
F. STACHOWICZ ◽  
S. BOSIAKOV ◽  
S. ROGOSIN
Keyword(s):  
Surface Roughness ◽  
Sheet Surface ◽  
Roughness Change

scholarly journals Mechanical Wear and Surface Roughness of Glass and Hybrid Ceramics

2019 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Surface Roughness ◽  
Weight Loss ◽  
Wear Resistance ◽  
Glass Ceramic ◽  
High Surface ◽  
Lithium Disilicate ◽  
Mechanical Wear ◽  
Roughness Change ◽  
Before And After ◽  
Ceramic Blocks

Aim: The purpose of this invitro study was to evaluate wear resistance and surface roughness of two hybrid ceramics in comparison to lithium disilicate glass ceramic before and after mechanical abrasion. Materials and Methods: Thirty samples were divided according to material of construction into three groups, group (1): Lithium disilicate glass ceramic (IPS e.max, n=10), group (2): Resin nanoceramic (Lava Ultimate, n=10), group (3): Polymer infiltrated ceramic (Vita Enamic, n=10). All samples were fabricated out of CAD CAM ceramic blocks, weighed and evaluated for surface roughness before and after mechanical wear. Results: Resin nanoceramic (Lava ultimate), showed significantly low weight loss and surface roughness change after mechanical wear than IPS e.max. The polymer infiltrated ceramic (Vita Enamic) showed significantly high surface roughness than Resin nanoceramic (Lava ultimate), while IPS e.max showed the highest weight loss and surface roughness change. Conclusion: Resin nanoceramics revealed highest mechanical wear resistance contributed by terms of weight loss and surface roughness change, while Lithium disilicate glass ceramic showed the least wear resistance.

scholarly journals Thermo-Responsive Wettability via Surface Roughness Change on Polymer-Coated Titanate Nanorod Brushes Toward Fast and Multi-Directional Droplet Transport

2020 ◽  
Author(s):  
Kenji Okada ◽  
Yoko Miura ◽  
Tomoya Chiya ◽  
Yasuaki Tokudome ◽  
Masahide Takahashi
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Contact Angles ◽  
Roughness Change ◽  
Scientific Advancement ◽  
Novel Approach ◽  
Droplet Transport ◽  
Titanate Nanostructures ◽  
Selection Of ◽  
Smart Surface

A novel approach for thermo-responsive wettability has been accomplished by surface roughness change induced by thermal expansion of paraffin coated on titanate nanostructures. The surface exhibits thermo-responsive and reversible wettability change in a hydrophobic regime; the surface shows superhydrophobicity with contact angles of ~157° below 50 °C and ~118° above 50 °C due to a decrease of surface roughness caused by thermally-expanded paraffin at higher temperatures. Reversible wettability change of ~40° of a contact angle allows for a fast and multi-directional droplet transport. The present approach affords versatile selection of materials and wide variety of the contact angle, promoting both scientific advancement and technology innovation in the field of smart surface.

Aluminum sheet surface roughness correlation with adhesion in polymer metal hybrid overmolding

CIRP Annals ◽  
2011 ◽  
Vol 60 (1) ◽  
pp. 559-562 ◽  
Author(s):  
G. Lucchetta ◽  
F. Marinello ◽  
P.F. Bariani
Keyword(s):  
Surface Roughness ◽  
Aluminum Sheet ◽  
Sheet Surface ◽  
Polymer Metal
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