Comparative study of the sintering behaviors between YSZ and LZ/YSZ composite

Sintering behaviors of YSZ and 30LZ were studied in this paper. LZ and YSZ were found to have a good chemical compatibility that no obviously changes in the amount of LZ after sintered at 1473 K for 200 h and La-rich area keeps pyrochlore structure after sintered 1673 K for 24 h. The sintering resistance of YSZ was improved by the addition of LZ that the shrinkage of 30LZ were lower than YSZ at whole sintering temperature. However, TEC of YSZ will decrease if LZ was added into YSZ which is because LZ has lower TEC than YSZ.