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公开(公告)号:US20100311562A1
公开(公告)日:2010-12-09
申请号:US11520041
申请日:2006-09-13
CPC分类号: C04B35/486 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3246 , C04B2235/72 , C23C4/11 , C23C14/083 , C23C30/00 , F01D5/288 , Y02T50/67 , Y02T50/672 , Y10T428/12611 , Y10T428/12618 , Y10T428/12667 , Y10T428/24 , Y10T428/24471 , Y10T428/24997 , Y10T428/25 , Y10T428/252 , Y10T428/26 , Y10T428/2982
摘要: The invention is directed to a material and method for obtaining a ceramic abradable system for high temperature applications. High purity partially stabilized zirconia and/or hafnia base material has higher sintering resistance compared to conventional 6-9 weight percent yttria stabilized zirconia systems. The benefits of these systems are higher service lifetime and low thermal conductivity to achieve high operating temperatures. System includes a superalloy substrate, oxidation resistant bond coat and a thick ceramic abradable top coat. Total coating thickness is about 0.5-5 mm. In some applications an intermediate layer of high purity partially stabilized zirconia or a partially stabilized YSZ/MCrAlY cermet is applied over the oxidation resistant bond coat. In other applications an abradable system is applied on top of a grid. Additional benefits should be reduced blade wear at high operating conditions.
摘要翻译: 本发明涉及用于获得用于高温应用的陶瓷耐磨系统的材料和方法。 与常规6-9重量%的氧化钇稳定的氧化锆体系相比,高纯度部分稳定的氧化锆和/或铪基材料具有更高的耐烧结性。 这些系统的优点是更高的使用寿命和较低的热导率,以达到高的工作温度。 系统包括超合金基材,抗氧化粘合涂层和厚陶瓷耐磨面漆。 总涂层厚度约为0.5-5毫米。 在一些应用中,将高纯度部分稳定的氧化锆或部分稳定的YSZ / MCrAlY金属陶瓷的中间层涂覆在抗氧化粘合涂层上。 在其他应用中,可磨损系统应用于网格顶部。 额外的好处应该是在高操作条件下减少刀片磨损。
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公开(公告)号:US07723249B2
公开(公告)日:2010-05-25
申请号:US11520043
申请日:2006-09-13
IPC分类号: C04B35/486 , C04B35/488 , B32B18/00
CPC分类号: C04B35/486 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3246 , C04B2235/72 , C23C4/11 , C23C14/083 , C23C30/00 , F01D5/288 , Y02T50/67 , Y02T50/672 , Y10T428/12611 , Y10T428/12618 , Y10T428/12667 , Y10T428/24 , Y10T428/24471 , Y10T428/24997 , Y10T428/25 , Y10T428/252 , Y10T428/26 , Y10T428/2982
摘要: The invention is directed to a ceramic material for use in thermal barriers for high temperature cycling applications and high temperature abradable coatings. The material is an alloy formed predominantly from ultra-pure zirconia (ZrO2) and/or hafnia (HfO2) that has uncharacteristically high sintering resistance to achieve a high service lifetime and low thermal conductivity to achieve high operating temperatures. In the material, oxide impurities such as soda (Na2O), silica (SiO2), alumina (Al2O3), titania (TiO2), hematite (Fe2O3), calcia (CaO), and magnesia (MgO) make up no more than 0.15 weight percent. The invention provides materials to produce a coating structure so that the changes in the coating microstructure over the in-service lifetime are either limited or beneficial.
摘要翻译: 本发明涉及一种用于高温循环应用的热障层和高温耐磨涂层的陶瓷材料。 该材料是主要由超纯氧化锆(ZrO2)和/或铪(HfO2)形成的合金,其具有非常高的耐烧结性,以实现高使用寿命和低热导率以实现高工作温度。 在该材料中,诸如苏打(Na 2 O),二氧化硅(SiO 2),氧化铝(Al 2 O 3),二氧化钛(TiO 2),赤铁矿(Fe 2 O 3),氧化钙(CaO)和氧化镁(MgO)的氧化物杂质构成不超过0.15重量 百分。 本发明提供了用于生产涂层结构的材料,使得在使用寿命内的涂层微结构的变化是有限的或有益的。
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