公开(公告)号：US20160083833A1

公开(公告)日：2016-03-24

申请号：US14836502

申请日：2015-08-26

Applicant: ROLLS-ROYCE PLC

Inventor： David Stafford RICKERBY ,  Robert Edward JONES ,  Christine CHALK

IPC: C23C14/08 ,  B23K26/00 ,  C22F1/00 ,  C25D7/00 ,  C22F1/10

CPC classification number: C23C14/081 ,  B23K15/00 ,  B23K15/0006 ,  B23K26/0006 ,  B23K26/08 ,  B23K26/354 ,  B23K26/355 ,  B23K2101/001 ,  B23K2101/34 ,  B23K2103/26 ,  C22F1/008 ,  C22F1/10 ,  C23C4/11 ,  C23C14/08 ,  C23C14/083 ,  C23C14/30 ,  C23C28/321 ,  C23C28/3215 ,  C23C28/345 ,  C23C28/3455 ,  C23C28/347 ,  C25D5/50 ,  C25D7/008 ,  F01D5/288 ,  F05D2230/313 ,  F05D2230/40 ,  F05D2230/90 ,  F05D2300/143 ,  F05D2300/175 ,  F05D2300/2118

Abstract: A thermal barrier coated metallic article includes a platinum-group metal enriched outer layer on the article. The surface of the outer layer has a microstructure including a plurality of projections extending away from the metallic article. A thin adherent layer of oxide is formed on the outer layer of the metallic article. A ceramic coating is provided on the oxide layer on the surface on and around the projections. The ceramic coating includes a plurality of columnar ceramic grains which extend through the full thickness of the ceramic coating. The grains are arranged in clusters separated by gaps. The grains deposited around the projections are generally blocked. The projections reduce the stress in the ceramic coating near the interface with the adherent layer of oxide and also reduce the stress in the adherent layer of oxide and hence increase the working life of the thermal barrier coating system.

Abstract translation: 热障涂层的金属制品包括在制品上富含铂族金属的外层。 外层的表面具有包括远离金属制品延伸的多个突起的微结构。 在金属制品的外层上形成薄的氧化物粘附层。 在凸起上和周围的表面上的氧化物层上提供陶瓷涂层。 陶瓷涂层包括延伸穿过陶瓷涂层的全部厚度的多个柱状陶瓷颗粒。 颗粒被排列成由间隙分开的簇。 沉积在突起周围的颗粒通常被阻挡。 这些突起减少了与氧化物粘附层界面附近的陶瓷涂层中的应力，并且还降低了氧化物粘附层中的应力，从而增加了热障涂层系统的使用寿命。