Title:
HEAT-SHIELDING COATING, TURBINE MEMBER, GAS TURBINE, AND MANUFACTURING METHOD FOR HEAT-SHIELDING COATING
Document Type and Number:
WIPO Patent Application WO/2016/129521
Kind Code:
A1
Abstract:
A heat-shielding coating (100) is provided with: a heat-resistant alloy substrate used in a turbine member; and a ceramic layer (300) formed on the heat-resistant alloy substrate, wherein longitudinal cracks (C) extending in the thickness direction are dispersed in the surface direction of the ceramic layer (300), and a plurality of pores (P) are included inside the ceramic layer (300). Thermal spray particles, which comprise YbSZ having a particle-size distribution such that 50% of the particle diameters in the cumulative particle-size distribution are from 40 μm to 100 μm, are thermally sprayed at a thermal spray distance not exceeding 80 mm, and the longitudinal cracks (C) are dispersed in the surface direction with a pitch of 0.5 cracks/mm to 40 cracks/mm, thereby forming the ceramic layer (300) with a porosity, taking into account both the longitudinal cracks (C) and the pores (P), of 4% to 15%.
Inventors:
INOUE YOSHIYUKI (JP)
TORIGOE TAIJI (JP)
KUDO DAISUKE (JP)
KUWABARA MASAMITSU (JP)
OSAWA KEI (JP)
UEMURA YOSHITAKA (JP)
OKAYA NAOTOSHI (JP)
TORIGOE TAIJI (JP)
KUDO DAISUKE (JP)
KUWABARA MASAMITSU (JP)
OSAWA KEI (JP)
UEMURA YOSHITAKA (JP)
OKAYA NAOTOSHI (JP)
Application Number:
PCT/JP2016/053506
Publication Date:
August 18, 2016
Filing Date:
February 05, 2016
Export Citation:
Assignee:
MITSUBISHI HITACHI POWER SYS (JP)
International Classes:
C23C4/10; F01D5/28; F01D25/00; F02C7/00
Foreign References:
| JP2003160852A | 2003-06-06 | |||
| JP2002069607A | 2002-03-08 | |||
| JP2012224893A | 2012-11-15 |
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
Woods Ryuichiro (JP)
Woods Ryuichiro (JP)
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