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1. 发明申请

WO2010070574A1 ATTACHMENT OF A HIGH-Z FOCAL TRACK LAYER TO A CARBON-CARBON COMPOSITE SUBSTRATE SERVING AS A ROTARY ANODE TARGET 审中-公开
标题翻译：将高Z焦点轨道层连接到作为旋转阳极目标的碳 - 碳复合基材的附着
公开(公告)号：WO2010070574A1
公开(公告)日：2010-06-24
申请号：PCT/IB2009/055740
申请日：2009-12-14
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DRORY, Michael, D.
发明人： DRORY, Michael, D.
IPC分类号： H01J35/10
CPC分类号： H01J35/108 , H01J2235/081 , H01J2235/084 , H01J2235/085 , H01J2235/088
摘要： The present invention refers to hybrid anode disk structures for use in X- ray tubes of the rotary anode type and is concerned more particularly with a novel light weight anode disk structure (RA) which comprises an adhesion promoting protective silicon carbide (SiC) interlayer (SCI) deposited onto a rotary X-ray tube's anode target (AT), wherein the latter may e.g. be made of a carbon-carbon composite substrate (SUB'). Moreover, a manufacturing method for robustly attaching a coating layer (CL) consisting of a high-Z material (e.g. a layer made of a tungsten-rhenium alloy) on the surface of said anode target is provided, whereupon according to said method it may be foreseen to apply a refractory metal overcoating layer (RML), such as given e.g. by a tantalum (Ta), hafnium (Hf), vanadium (V) or rhenium (Re) layer, to the silicon carbide interlayer (SCI) prior to the deposition of the tungsten-rhenium alloy. The invention thus leverages the tendency for cracking of the silicon carbide coated carbon composite substrate (SUB') during thermal cycling and enhances adhesion of the silicon carbide/refractory metal interlayers to the carbon-carbon composite substrate (SUB') and focal track coating layer (CL) by an interlocking mechanism. Key aspects of the proposed invention are: a) controlled formation of coating cracks (SC) in the silicon carbide layer (SCI) and b) conformal filling of SiC crack openings with a refractory metal.
摘要翻译：本发明涉及用于旋转阳极型的X射线管的混合阳极盘结构，更具体地涉及一种新颖的轻质阳极盘结构（RA），其包括粘附促进保护性碳化硅（SiC）中间层（ SCI）沉积到旋转X射线管的阳极靶（AT）上，其中后者可以例如由碳 - 碳复合基板（SUB'）制成。此外，提供了一种用于将由高Z材料（例如由钨 - 铼合金制成的层）组成的涂层（CL）坚固地附着在所述阳极靶的表面上的制造方法，因此根据所述方法，预期应用难熔金属外涂层（RML），例如给出例如通过钽（Ta），铪（Hf），钒（V）或铼（Re）层到沉积钨 - 铼合金之前的碳化硅中间层（SCI）。因此，本发明利用了在热循环期间碳化硅涂覆的碳复合基板（SUB'）的开裂趋势，并且增强了碳化硅/难熔金属夹层对碳 - 碳复合基板（SUB'）和聚焦轨道涂层（CL）通过互锁机构。提出的发明的关键方面是：a）在碳化硅层（SCI）中控制形成涂层裂纹（SC），以及b）使SiC裂纹开口与耐火金属的共形填充。

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