POROUS BULK METALLIC GLASS PRODUCED BY SPARK PLASMA SINTERING OF GAS ATOMIZED Zr_(55)Cu_(30)Al_(10)Ni_5 GLASSY POWDERS

摘要

Porous bulk metallic glasses recently attract increasing scientific and industrial attention due to their unique mechanical, physical, chemical, thermal, electrical and acoustic properties. In the present study, porous Zr_(55)Cu_(30)Al_(10)Ni_5 bulk metallic glass specimens were fabricated by a spark plasma sintering process using the Zr_(55)Cu_(30)Al_(10)Ni_5 glassy alloy powders made by argon gas atomization method. No crystallization was observed in the sintered porous bulk glassy alloy. The thermal stability of the sintered porous glassy alloy specimen was similar to that of the original powder. The sintered porous glassy alloy specimen exhibited larger plastic ductility and lower Young's modulus than those of the as-cast alloy specimen.