Effect of Sm<sub>2</sub>O<sub>3</sub> Additives on the Rod-Like β-Si<sub>3</sub>N<sub>4</sub> Crystal of Porous Silicon Nitride Fabricated by Reaction-Bonded

Sm2O3 and MgO as a sintering additives to fabricated porous silicon nitride by reaction-bonded. The phase of as-produced silicon nitride characterized by XRD...