Preparation and properties of polyimide/Cu functionally graded material

Fabrication and characterization of functional graded polyurethane foam (FGPUF)

“…In the recent years, the multilayer FGMs has been under attention because of their wide gradation of chemical, physical, and mechanical properties in particular direction of material depending on the desired design. In spite of importance of polymer‐based FGMs, there is a little bit works concentrated on them . Among polymer matrix, polyurethane is very common because of its vast applications.…”

“…In spite of importance of polymer-based FGMs, there is a little bit works concentrated on them. [4][5][6][7][8] Among polymer matrix, polyurethane is very common because of its vast applications.…”

A methodology to investigate the intrinsic effect of the pulsed electric current during the spark plasma sintering of electrically conductive powders

“…Among these, the local Joule heating at the contacts between individual particles [4,25,26] may represent a realistic explanation of the experimental results shown in this work. The small contact areas and the typical presence of oxide layers covering the aluminum particles may significantly increase the electrical resistance of the compact.…”

Pulse Current Auxiliary Sintering

“…RS equipments used by researchers in different countries were purchased directly from commercial corporations, or developed by scientific institutions or researchers themselves for facilitate their own studies. Apart from the RS equipments developed by the two Japanese companies (Spark Plasma Sintering apparatus, well known as SPS), user-built machines accounts for about 40% among all the current RS machines, as introduced in Fig.5, where other companies refer to Sodick Co. Ltd [5]., Superior Graphite Co. Ltd.(USA) [6], Materials Modification Inc.(USA) [7], Eltek Co.(Korea) [8]etc.. All the user-built machines were named diversely to distinguish them from the commercial equipments. Fig.…”