Development of a roadmap for advanced ceramics: 2010–2025

Strain Mechanisms in Lead-Free Ferroelectrics for Actuators

“…This chapter introduces the fundamental physics and concepts of dielectrics [30][31][32][33][34][35][36][37][38][39] and their classification [38][39][40][41][42][43][44][45][46] , as well as of ferroelectrics 2,16,29,[37][38][39][40][41][42][43][44][45][46][47][48][49][50] , and relaxor ferroelectrics. [51][52][53][54][55][56][57] The information of many textbooks and review papers related to the physics of materials science was employed throughout these sections.…”

“…1 These advanced ceramics are intended to meet the constantly evolving frontiers of new energy efficient products, which are desired to increase productivity and assure a better quality of life. 2 Piezoelectrics couple electrical and mechanical properties and thus are relevant in a wide variety of applications, such as actuators, motors, sensors, accelerometers, transducers, resonators, and others. 3,4 Actuators are designed to transform an electrical input into controlled displacement.…”

Welding lines formation in holes obtained by low pressure injection molding of ceramic parts

“…The manufacture of advanced ceramic parts has been challenging around the world, searching ways of making this kind of materials and products useful and profitable in applications that demand reliability in high temperatures [1]. There are different types of manufacturing processes for advanced ceramics, such as uniaxial-pressing, hot pressing, cold isostatic and hot isostatic pressing, slip casting, tape casting, extrusion, injection molding, gel casting or forming [2].…”

On the dependence of effective mechanical properties of ceramics on partial concentrations of different size pores in its structure

“…Ceramics based on nanocrystalline metal oxides are widely used for the manufacture of critical parts in many industries [1][2][3][4]. It is well known that such ceramics are characterized by a complex pore structure.…”

“…In practice, the combination of pore structure parameters and mechanical properties of the material largely determine the scope of its functional application. In this connection, studying the mechanical properties of the ceramics in the entire range of its pore structure parameters is of great relevance and demand [1][2][3][4]. Therefore, the goal of this paper is the numerical study of the dependence of strength and elastic properties of ceramic materials on the pore volume fraction that corresponds to the pores of the second maximum of the pore size distribution regarding the total porosity of material.…”