Preparation and thermophysical properties of CeO2 doped La2Zr2O7 ceramic for thermal barrier coatings

Microstructural, mechanical and thermal characteristics of zirconia-based thermal barrier coatings deposited by plasma spraying

“…The CTE value of lanthanum zirconate coating was 86 % of that of YSZ one. It is worth noting that the values herein obtained are higher than those previously reported for similar coatings [24,25]. In particular, the reason for the improvement of CTE value can be found in the microstructure of the LZ coating, herein characterized by more uniform distribution of crack networks as well as by lower stress state in planar direction after the deposition of the melted particles at the substrate surface.…”

Microstructure analyses and thermophysical properties of nanostructured thermal barrier coatings

“…The concentration of oxygen vacancy is basically related to the content of yttria. 31 Since the nanostructured coatings have the same yttria content as the conventional ones, we can deduce that the thermal conductivity difference between the nanostructured zirconia coating and the conventional one is not primarily caused by those point defects.…”

The structure, thermal expansion coefficient and sintering behavior of Nd3+-doped La2Zr2O7 for thermal barrier coatings

“…According to the diagram of La 2 O 3 -ZrO 2 [4], the pyrochlore La 2 Zr 2 O 7 exists in a rather large range and the mol ratio range of La and Zr is 0.87-1.15. Fig.…”

“…As a result, a worldwide effort has been undertaken to identify new candidates for a TBC application [1][2][3]. It is found that, La 2 Zr 2 O 7 has excellent thermal stability, low thermal conductivity, chemical resistance, low sintering rate, and become a very promising candidate for new TBCs [4]. So far, most of the research is aiming at increasing the coefficient of thermal expansion (CTE) of LZ [5,6].…”