Preparation and microstructure of in-situ (ZrB2+Al2O3+Al3Zr)p/A356 composite synthesized by melt direct reaction

Novel synthesis of ZrB2 powder by low temperature direct molten salt reaction

“…The phase with the higher contrast is the rod-shaped Al 3 Zr, because of its higher average atomic weight and the one with lower contrast is the hexagonal-shaped ZrB 2 . Similar microstructures of ZrB 2 have been reported in literature with different synthesis methods[18][19][20]. The sample synthesized at 800˚C exhibits a fully developed hexagonal prism-like shape furthermore the 8 similar hexagonal-shaped of ZrB 2 particles and presence of small particles in some areas indicate that the growth can be continued at higher temperatures.…”

“…Furthermore Degang Zhao, et al [19] synthesized Al matrix composites reinforced by TiB 2 particles and sub-micron ZrB 2 with hexagonal morphology using K 2 TiF 6 , K 2 ZrF 6 and KBF 4 salts and Al at 1000˚C. Yang, et al [20] studied the synthesis of ZrB 2 , Al 3 Zr and Al 2 O 3 reinforced composite using K 2 ZrF 6 , …”

Microstructures and properties of in-situ (ZrB2 + Al2O3)np/AA6111 composites synthesized under magnetic and ultrasonic fields

“…The results showed that the reinforcing phases in the system Al-K 2 ZrF 6 -Na 2 B 4 O 7 were Al 2 O 3 and ZrB 2 . The possible reaction occurring in the Al-K 2 ZrF 6 -Na 2 B 4 O 7 system can be illustrated as follows [16][17][18] : ( ) ( )…”

Mechanism and microstructural evolution of combustion synthesis of ZrB2–Al2O3 composite powders

“…The ZrB 2 -Al 2 O 3 composite powders have been successfully fabricated by conventional methods, including pressureless sintering [7], reactive sintering [8,9], direct mixing [10,11], melt direct reaction [12,13], microwave synthesis [6], and mechanochemical synthesis [14]. All these synthetic routes are based on complicated processes and high energy consumption, along with inevitable introducing of impurities.…”