نتایج جستجو برای: nanocrystallization

تعداد نتایج: 200  

2013
Ali Bahari A. Bahari

From a nano electronic circuit designer’s point of view the growth of ultrathin film in the ultra high vacuum chamber (UHVC) would imply better stainless steel structure. ZAF method and SEM (scanning Electron Microscopy) technique are used to realize surface nano crystallizafion on an stailness steel sample. The as-welded condition of UHVC is also studied to see if this chamber can prevent weld...

2017
Laurent Waltz Delphine Retraint A. Roos P. Olier J. Lu L. Waltz D. Retraint

This paper presents a combination of the surface mechanical attrition treatment (SMAT) and the corolling process performed at 550 °C. This duplex method leads to the formation of a semi-massive multilayer structure of alternating nanocrystalline layers, transition layers and coarse grain layers. Transmission electron microscope observations correlated with nanoindentation hardness measurements ...

Journal: :ACS Applied Materials & Interfaces 2021

A new process to crystallize amorphous silicon without melting and the generation of excessive heating nearby components is presented. We propose addition a molybdenum layer improve quality laser-induced crystallization over that achieved by direct irradiation alone. The advantages are it allows control crystallite size varying applied fluence near-infrared femtosecond laser. It offers two regi...

2006
Donghua Xu William L. Johnson

Due to their scientific significance and potential engineering applications, bulk metallic glasses are among the most intensively studied advanced materials. Understanding the glass-forming ability GFA of these metallic alloys is a long-standing subject. While a large number of empirical factors have been proposed to correlate with GFA of the alloys, a full understanding of GFA remains a goal t...

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