Mechanical investigation on macro wire of Bismuth samples
Dr. D. J. Chokhwala, Dr. K.C. Poria
Vicker’ Microhardness, Bismuth, Indentation Size Effect (ISE) , Proportional Specimen Resistance (PSR)
Bismuth is a semimetal in bulk, bulk material do not having a good thermal as well as electrical properties, but Bismuth nanowires (10nm) have a good thermal and electric behavior while nano wire exhibiting semiconducting behavior. Mechanical characterization is critical for the formation of nanowires made of various materials. The attempt is made to prepare the nano wires of Bismuth .The microhardness testing of bismuth wire plate samples were performed. Using Indentation Size Effect ( ISE ) Model different mechanical parameters on a microscopic scale were calculated and presented in this communication. Vicker's mircohardness number (Hv) variation with load were reported. At small indentation test loads, an indentation size effect was observed for Bismuth wire plate samples. For all samples, the variation of microhardness number (Hv) with variable loads is non-systematic. PSR ( Proportional Specimen Resistance ) Model used for obtaining the more relevant microhardness data are also summarized in present communication. The calculation of elastic stiffness constant C11 obtained through Wooster’s empirical relations.
Article Details
Unique Paper ID: 157676

Publication Volume & Issue: Volume 9, Issue 7

Page(s): 712 - 715
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