Measurement and characterization of a nano-scale multiple-step height sample using a stylus profiler

2016 ◽  
Vol 387 ◽  
pp. 732-735 ◽  
Author(s):  
Changsheng Li ◽  
Shuming Yang ◽  
Yiming Wang ◽  
Chenying Wang ◽  
Wei Ren ◽  
...  
Keyword(s):  
Step Height ◽  
Nano Scale ◽  
Stylus Profiler ◽  
Multiple Step

scholarly journals Structural Factors Inducing Cracking of Brass Fittings

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3255
Author(s):  
Lenka Kunčická ◽  
Michal Jambor ◽  
Adam Weiser ◽  
Jiří Dvořák
Keyword(s):  
Chemical Composition ◽  
Plastic Flow ◽  
Beta Phase ◽  
Alpha Phase ◽  
Structural Factors ◽  
Transmission Electron ◽  
Medical Gas ◽  
Hot Die Forging ◽  
Multiple Step

Cu–Zn–Pb brasses are popular materials, from which numerous industrially and commercially used components are fabricated. These alloys are typically subjected to multiple-step processing—involving casting, extrusion, hot forming, and machining—which can introduce various defects to the final product. The present study focuses on the detailed characterization of the structure of a brass fitting—i.e., a pre-shaped medical gas valve, produced by hot die forging—and attempts to assess the factors beyond local cracking occurring during processing. The analyses involved characterization of plastic flow via optical microscopy, and investigations of the phenomena in the vicinity of the crack, for which we used scanning and transmission electron microscopy. Numerical simulation was implemented not only to characterize the plastic flow more in detail, but primarily to investigate the probability of the occurrence of cracking based on the presence of stress. Last, but not least, microhardness in specific locations of the fitting were examined. The results reveal that the cracking occurring in the location with the highest probability of the occurrence of defects was most likely induced by differences in the chemical composition; the location the crack in which developed exhibited local changes not only in chemical composition—which manifested as the presence of brittle precipitates—but also in beta phase depletion. Moreover, as a result of the presence of oxidic precipitates and the hard and brittle alpha phase, the vicinity of the crack exhibited an increase in microhardness, which contributed to local brittleness.

Cryogenic Characterization of Nano-scale Bulk FinFETs

2020 ◽  
Author(s):  
Lin-Jie Fan ◽  
Jin-Shun Bi ◽  
Xue Fan ◽  
Gao-Bo Xu ◽  
Yan-Nan Xu ◽  
...  
Keyword(s):  
Nano Scale

scholarly journals Nano-scale actin-network characterization of fibroblast cells lacking functional Arp2/3 complex

2017 ◽  
Vol 197 (3) ◽  
pp. 312-321 ◽  
Author(s):  
Karen L. Anderson ◽  
Christopher Page ◽  
Mark F. Swift ◽  
Praveen Suraneni ◽  
Mandy E.W. Janssen ◽  
...  
Keyword(s):  
Fibroblast Cells ◽  
Actin Network ◽  
Nano Scale ◽  
Network Characterization

Synthesis and characterization of nano-scale terbium-benzoic acid luminescent complex

2007 ◽  
Author(s):  
Zhenfeng Cui ◽  
Huijuan Ren ◽  
Fenghua Chen ◽  
Guixia Liu ◽  
Guangyan Hong
Keyword(s):  
Benzoic Acid ◽  
Synthesis And Characterization ◽  
Nano Scale
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