Micro-alloying effects of yttrium on the microstructure and strength of silicon carbide joint brazed with chromium-silicon eutectic alloy

Abstract With the purpose of increasing the joint strength by refining the grain size of CrSi2 and increasing the fraction of Si-CrSi2 eutectic, the authors studied the effect of yttrium (Y) on the microstructure and mechanical property of SiC joints brazed with Si-29 wt% Cr eutectic alloy with varying Y contents (0–1.0 wt% Y). It was found that adding of appropriate content of Y (