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公开(公告)号:US06541134B1
公开(公告)日:2003-04-01
申请号:US09599426
申请日:2000-06-22
IPC分类号: B32B900
CPC分类号: F01D11/122 , C04B41/009 , C04B41/52 , C04B41/89 , Y02T50/67 , Y02T50/672 , Y10T428/25 , Y10T428/26 , Y10T428/30 , C04B35/565 , C04B35/806 , C04B35/584 , C04B41/5059 , C04B41/5089 , C04B41/4539 , C04B41/5024 , C04B41/5066 , C04B41/522 , C04B2103/0017 , C04B41/5027 , C04B41/5037 , C04B41/5042
摘要: A bond coating is applied between a ceramic matrix composite and a insulative and abradable top coat layer. The bond coating is a slurry layer of fine particles of silicon nitride and silicon carbide suspended in a colloidal silica or zircon binder. The ratio of these materials in the bond coating should match the ratio of these in the CMC. If the CMC is SiC fibers in a SiC matrix, the slurry should be composed of SiC particles with a colloidal silica binder. High surface roughness is achieved by entrapping coarse ceramic particles into the wet bond coating slurry. Thereafter the product is heat treated to maximize bond strength and verify oxidation resistance.
摘要翻译: 在陶瓷基复合材料和绝缘和耐磨的顶涂层之间施加粘合涂层。 粘合涂层是悬浮在胶体二氧化硅或锆石粘合剂中的氮化硅和碳化硅的细颗粒的浆料层。 这些材料在粘合涂层中的比例应与CMC中的这些比例相匹配。 如果CMC是SiC基体中的SiC纤维,则浆料应由具有胶体二氧化硅粘合剂的SiC颗粒组成。 通过将粗陶瓷颗粒捕获到湿粘合涂层浆料中来实现高表面粗糙度。 此后,对产物进行热处理以使粘合强度最大化并验证耐氧化性。
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公开(公告)号:US06582779B2
公开(公告)日:2003-06-24
申请号:US09371826
申请日:1999-08-11
IPC分类号: C23C1430
CPC分类号: C23C16/405 , C04B35/584 , C04B35/6263 , C04B41/009 , C04B41/52 , C04B41/89 , C04B2235/3213 , C04B2235/3225 , C04B2235/3227 , C04B2235/3826 , C04B2235/483 , C04B2235/616 , C04B2235/656 , C04B2235/77 , C23C26/00 , F01D5/284 , F01D5/288 , C04B41/0072 , C04B41/4517 , C04B41/4539 , C04B41/4578 , C04B41/4582 , C04B41/4596 , C04B41/5066 , C04B41/4515 , C04B41/4535 , C04B41/4554 , C04B41/457 , C04B41/5059 , C04B41/4519 , C04B41/4529 , C04B41/455 , C04B41/5027 , C04B41/4523 , C04B41/522
摘要: A turbomachine component includes a silicon nitride substrate and a multi-layer coating bonded to the substrate. The coating includes an interlayer of porous fibrous silicon nitride having a density of between 85-98%. The coating also includes an outer layer formed of an oxide compound, preferably tantalum oxide, that is applied by Electron Beam-Physical Vapor Deposition. The combination of the silicon nitride interlayer and tantalum oxide outer layer serves to protect the substrate from the adverse affects of oxidation, impact by foreign objects and extreme operating temperatures.
摘要翻译: 涡轮机组件包括氮化硅衬底和结合到衬底的多层涂层。 涂层包括密度在85-98%之间的多孔纤维状氮化硅夹层。 该涂层还包括由氧化物化合物形成的外层,优选氧化钽,其通过电子束物理气相沉积施加。 氮化硅中间层和氧化钽外层的组合用于保护衬底免受氧化的不利影响,异物的冲击和极端的工作温度。
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公开(公告)号:US6159553A
公开(公告)日:2000-12-12
申请号:US208109
申请日:1998-11-27
IPC分类号: C04B41/50 , C04B41/52 , C04B41/87 , C04B41/89 , C23C4/02 , C23C24/08 , C23C28/04 , B05D3/02 , C23C4/10
CPC分类号: C04B41/5066 , C04B41/009 , C04B41/52 , C04B41/87 , C04B41/89 , C23C4/02 , C23C24/085 , C23C28/04 , Y02T50/67 , C04B41/4539 , C04B41/4578 , C04B41/5027 , C04B41/5064 , C04B41/4527 , C04B41/5037 , C04B41/5042 , C04B41/5024 , C04B41/522 , C04B35/584
摘要: A coating of whisker shaped beta silicon nitride grains are formed upon a silicon nitride substrate by sintering over a period of several hours, and the resulting product has a porous reaction bond coating strongly adhered to the silicon nitride substrate.
摘要翻译: 通过在几个小时内烧结,在氮化硅衬底上形成晶须状β氮化硅颗粒的涂层,所得到的产品具有强烈粘附到氮化硅衬底的多孔反应粘合涂层。
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