RU2008121855A - Способ нанесения покрытия на лопатку и лопатка газовой турбины - Google Patents

Способ нанесения покрытия на лопатку и лопатка газовой турбины Download PDF

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RU2008121855A
RU2008121855A RU2008121855/02A RU2008121855A RU2008121855A RU 2008121855 A RU2008121855 A RU 2008121855A RU 2008121855/02 A RU2008121855/02 A RU 2008121855/02A RU 2008121855 A RU2008121855 A RU 2008121855A RU 2008121855 A RU2008121855 A RU 2008121855A
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layer
blade
coating
mcraly
diffusion layer
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Шарад ЧАНДРА (DE)
Шарад Чандра
Норберт ЧЕХ (DE)
Норберт ЧЕХ
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Ман Турбо Аг (De)
Ман Турбо Аг
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
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    • F05D2300/20—Oxide or non-oxide ceramics
    • F05D2300/21—Oxide ceramics

Abstract

1. Способ нанесения покрытия на пустотелую, охлаждаемую изнутри лопатку (1) газовой турбины, при котором на основной материал (3) лопатки (1) на наружную сторону лопатки (1) наносят наружное покрытие (5) из связующего слоя (6) на основе MCrAlY и керамического теплоизолирующего слоя (9) из оксида циркония, а на внутреннюю сторону лопатки (1) наносят внутреннее покрытие (4) из содержащего Cr диффузионного слоя (7), отличающийся тем, что ! связующий слой (6) на основе MCrAlY наносят на окончательно обработанную лопатку (1), ! посредством процесса химического осаждения из газовой фазы одновременно с нанесением внутреннего покрытия (4) содержащий Cr диффузионный слой (7) наносят также на связующий слой (6) на основе MCrAlY наружного покрытия (5), ! на покрытый содержащим Cr диффузионным слоем (7) связующий слой (6) посредством процесса химического осаждения из газовой фазы наносят содержащий Al диффузионный слой (8) и наружный хрупкий содержащий Al покрывающий слой, ! наружный хрупкий содержащий Al покрывающий слой удаляют посредством абразивной обработки, и ! после этого на содержащий Al диффузионный слой (8) наносят керамический теплоизолирующий слой (9). ! 2. Способ по п.1, отличающийся тем, что перед абразивной обработкой хрупкого содержащего Al покрывающего слоя лопатку (1) подвергают термообработке посредством диффузионного отжига. ! 3. Способ по п.1 или 2, отличающийся тем, что связующий слой (6) наносят в качестве слоя осаждения посредством плазменного или высокоскоростного напыления. ! 4. Пустотелая охлаждаемая лопатка газовой турбины, в которой на основной материал (3) лопатки (1) на наружной стороне лопатки (1) нанесено наружное покрытие (5) из связующего слоя

Claims (4)

1. Способ нанесения покрытия на пустотелую, охлаждаемую изнутри лопатку (1) газовой турбины, при котором на основной материал (3) лопатки (1) на наружную сторону лопатки (1) наносят наружное покрытие (5) из связующего слоя (6) на основе MCrAlY и керамического теплоизолирующего слоя (9) из оксида циркония, а на внутреннюю сторону лопатки (1) наносят внутреннее покрытие (4) из содержащего Cr диффузионного слоя (7), отличающийся тем, что
связующий слой (6) на основе MCrAlY наносят на окончательно обработанную лопатку (1),
посредством процесса химического осаждения из газовой фазы одновременно с нанесением внутреннего покрытия (4) содержащий Cr диффузионный слой (7) наносят также на связующий слой (6) на основе MCrAlY наружного покрытия (5),
на покрытый содержащим Cr диффузионным слоем (7) связующий слой (6) посредством процесса химического осаждения из газовой фазы наносят содержащий Al диффузионный слой (8) и наружный хрупкий содержащий Al покрывающий слой,
наружный хрупкий содержащий Al покрывающий слой удаляют посредством абразивной обработки, и
после этого на содержащий Al диффузионный слой (8) наносят керамический теплоизолирующий слой (9).
2. Способ по п.1, отличающийся тем, что перед абразивной обработкой хрупкого содержащего Al покрывающего слоя лопатку (1) подвергают термообработке посредством диффузионного отжига.
3. Способ по п.1 или 2, отличающийся тем, что связующий слой (6) наносят в качестве слоя осаждения посредством плазменного или высокоскоростного напыления.
4. Пустотелая охлаждаемая лопатка газовой турбины, в которой на основной материал (3) лопатки (1) на наружной стороне лопатки (1) нанесено наружное покрытие (5) из связующего слоя (6) на основе MCrAlY и керамического теплоизолирующего слоя (9) из оксида циркония, а на внутренней стороне лопатки (1) нанесено внутреннее покрытие (4) из содержащего Cr диффузионного слоя (7), отличающаяся тем, что на связующий слой (6) на основе MCrAlY наружного покрытия (5) нанесен содержащий Cr диффузионный слой (7), а на него нанесены содержащий Al диффузионный слой (8) и керамический теплоизолирующий слой (9).
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