![]() ![]() ![]() ![]() The micromechanical response is also explored to reveal the influence of the polymer impregnation on fracture mechanisms. We examine crack initiation and propagation within these materials. In this work, this improvement is investigated by comparing nanoporous gold and its polymer filled nanocomposite counterpart using computational microspecimen compact-tensile tests. This issue has been addressed through the impregnation of a polymer constituent into the nanoporous ligament network, creating a strong and malleable material in both tension and compression. These materials have, however, failed to show suitable attributes in tension: showing an extremely weak and brittle response. This results in a significantly increased ductility under tension which is vital for it to be considered for use in structural applications.Ībstract = "Nanoporous metals have favourable characteristics for many applications. Polymer impregnation, on the other hand, effectively delays the complete material failure as the polymer stabilizes the individual ligaments. It is shown that, in agreement with the findings in the literature, the failure of a few gold ligaments in nanoporous gold leads to the complete failure of the material with a relatively small resistance to failure and a characteristically brittle fracture. Note: Copper is preferred over silver due to its high electrical conductance and better resistance to corrosion it acts as a most suitable choice by the jewellers to mix with gold while making ornaments.Nanoporous metals have favourable characteristics for many applications. Hence the correct option is option (D), copper. For three parts of Gold one part of copper is added to increase its malleability, luster and increased resistance power. Since the Silver layer gets easily oxidized in nature and gets easily corroded, copper remains the best choice as a metal to mix with Gold. It acts as the best alloy to make ornaments. Copper is used as a base metal to mix with gold and to make it stronger, harder and less brittle in nature. Gold being a very soft metal on melting will easily melt away and it will not convert and mould into hard substance needs to be combined with copper or silver to change its property. The process of combining two different metals to improve their physical and chemical properties is called as alloying and the compound formed is known as an alloy. Gold has to mix with any other metal to give it more strength, improve hardness, ductility and melting point. It is a very soft metal and is alloyed with another metal to change its physical property and make it hardened to easily convert into ornaments. Hint: Gold (Au) is a metal of Group (11) of the periodic table and is known as transition and malleable metal. ![]()
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