Post-neodymium magnets that possess high heat resistance, coercivity, and (BH)max are desired for future-generation motors. However, the candidate materials post-neodymium such as Sm2Fe17N3 metastable magnetic alloys have certain process-related problems: low sinterability due to thermal decomposition at elevated temperatures, deterioration of coercivity during sintering, poor raw powder. Vario...

Starting powders of silicon-substituted beta-tricalcium phosphate (β-TCP/Si) were prepared by the polymerized complex method. Silicon ions blended up to 3.0 mol% total P content. The raw product powder was calcined at 1000 °C, formed into pellets, and sintered 1120 °C for 24 h. resultant bodies showed that a single phase β-type tricalcium (β-TCP) can be obtained with silicon addition 0-2.0 subs...

This research is dedicated to the role of different amounts hexagonal BN (hBN: 0, 1.5, 3, and 4.5 wt%) on pressureless sinterability ZrB2–25 vol% SiC ceramics. Phenolic resin (5 with a carbon yield ~40 % was incorporated as binder powder mixtures after initial cold pressing, final sintering process performed at 1900 °C for 100 min in vacuum furnace. The as-sintered specimens were characterized ...

Low-melting glass with an optimal composition should be developed for application to Cu electrodes in multilayered ceramic capacitors (MLCCs). This study evaluated the transition temperature, plating solution resistance, and wettability of melts on substrates low-melting a conventional compositions BaO, TiO2, ZnO, V2O5 added 46SiO2/27B2O3/27Na2O (mol%). Moreover, we produced electrode paste MLC...

Abstract Composite thermoelectric materials based on layered calcium cobaltite Ca 3 Co 4 O 9 + δ doped with copper particles were synthesized by two-step sintering, and their microstructure, electrotransport properties studied. It was determined that the introduction of into ceramics improves sinterability at moderate sintering temperatures ( T sint ≤ 1273 K), leading to a decrease in porosity ...

The fabrication of transparent polycrystalline Y₃Al₅O12 (YAG) is still a challenge, requiring the achievement of highly pure and fully dense, homogeneous materials. An important role is played by the powder characteristics: pure, fine and unagglomerated powders are essential for achieving full density and the required microstructural features. Keeping in mind these requirements, the aim of this...

A zeolite (mordenite)-pore-phenol resin composite and a zeolite-pore-shirasu glass composite were fabricated by hot-pressing. Their thermal conductivities were measured by a laser flash method to determine the thermal conductivity of the monolithic zeolite with the proposed mixing rule. The analysis using composites is useful for a zeolite powder with no sinterability to clarify its thermal pro...