Effects of CIP compaction pressure on piezoelectric properties of K0.5Na0.5NbO3

Structural Properties of Pb(Zr_0.52Ti_0.38Li_0.1)O₃ Prepared via High Planetary Mill

“…The average grain size is found to be 1.6 µm. As reported by the Bahanurddin.et.al (2015), the average grain size of pure PZT at 1100 °C is 3.95 µm [10]. As compared to the previous studies, the average grain size of PZLT is smaller than the undoped PZT ceramic.…”

Composition segregation and grain growth in (K0.5Na0.5)NbO3 piezoceramics prepared by two‐step cold sintering process

“…The improvement of d 33 is more obvious with large grains. Figure 9B displays the maximum processing temperature, relative density, and piezoelectric coefficient of KNN ceramics 23–25,44–46 . In other studies, KNN ceramics with d 33 above 100 pC/N have a relative density of at least 85%, whereas maximum process temperature needs to be above 1000°C.…”

“…Figure 9B displays the maximum processing temperature, relative density, and piezoelectric coefficient of KNN ceramics. [23][24][25][44][45][46] In other studies, KNN ceramics with d 33 above 100 pC/N have a relative density of at least 85%, whereas maximum process temperature needs to be above 1000 • C. Although the dense ceramics can be prepared at 300 • C, their piezoelectric properties are quite low. The d 33 of low-density pure KNN ceramics prepared by other method is ∼60 pC/N.…”

Exploring the Mpemba effect: a universal ice pressing enables porous ceramics

“…Existing technologies, such as uniaxial compression, sintering, and cold isostatic pressing (CIP), cannot generate pressure inside micro holes locally without causing damage to the global structures. 10,16,26,27 Inspired by the natural phenomena mentioned above, we present a technique of ''ice and fire'', that is, manipulation of force via water freezing (ice) and high-temperature sintering (fire) to produce materials with global porosity and local compaction. The term ''ice and fire'' mimics the classic manufacturing process of piezoceramic products of ''force and fire'': force pressing and high-temperature sintering.…”

“…Existing technologies, such as uniaxial compression, sintering, and cold isostatic pressing (CIP), cannot generate pressure inside micro holes locally without causing damage to the global structures. 10,16,26,27…”