Computer Simulation Principles of Combined-cycle Power Plants Start-ups Assignment Schedules

Radin, Yuri; Конторович, Т. С.

doi:10.2991/csic-15.2015.87

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2C-1) shows a slightly thicker top coat than others. A thick coating thickness may cause the thermal and residual stresses, but the implication was negligible on thermal durability according to previous study [20]. Also, indistinguishable interface without obvious large cracks were observed within top coats, indicating minimal thermal and residual stresses were imposed at the interfaces.…”

Section: Characterization Of As-coated Samplesmentioning

confidence: 52%

Microstructure design for blended feedstock and its thermal durability in lanthanum zirconate based thermal barrier coatings

Song

Paik

Guo

et al. 2016

Surface and Coatings Technology

View full text Add to dashboard Cite

The effects of microstructure design on the lifetime performance of lanthanum zirconate (La2Zr2O7; LZO) based thermal barrier coatings (TBCs) were investigated through various thermal exposure tests, such as furnace cyclic thermal fatigue, thermal shock, and jet engine thermal shock. To improve the thermal durability of LZO-based TBCs, composite top coats using two feedstock powders of LZO and 8 wt.% yttria doped stabilized zirconia (8YSZ) were prepared by mixing at different volume ratios (50:50 and 25:75, respectively). Also, buffer layers were introduced in layered LZO-based TBCs deposited by air plasma spray method. The TBCs with two buffer layers showed the best thermal shock resistance and thermal cyclic performance among all samples in all tests. For applications with mildly slow cooling rates, the thermal durability in single-layer TBCs is more effectively enhanced by controlling composite ratio in the blended powder, better than introducing a single buffer layer. For applications with fast cooling rates, the thermal durability can be effectively improved by introducing buffer layer than composite top coat, since buffer layer provides fast localized stress relief due to its high strain compliance. These research findings allow us to control the TBC structure and the buffer layer is efficient in improving thermal durability in the cyclic thermal exposure and thermal shock environments.

show abstract

Section: Characterization Of As-coated Samplesmentioning

confidence: 52%