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1. 发明授权

US5977007A Erbia-bearing core 失效
标题翻译：含Erbia的核心
公开(公告)号：US5977007A
公开(公告)日：1999-11-02
申请号：US960996
申请日：1997-10-30
申请人： Eliot S. Lassow , David L. Squier , Julie A. Faison
发明人： Eliot S. Lassow , David L. Squier , Julie A. Faison
IPC分类号： B22C9/04 , B22C1/00 , B22C9/10 , B22D29/00 , B22C1/02
CPC分类号： B22C9/10 , B22C1/00 , B22D29/001
摘要： A ceramic core that includes, prior to core sintering, erbia filler material alone or admixed with a second ceramic filler material, such as alumina, and a binder to provide a core that is relatively non-reactive with superalloys used in the manufacture of turbine blades, dimensionally stable during directional solidification (DS) for extended times, removable by chemcial leaching techniques, and having enhanced X-ray detectable during post-cast inspection operations. After core sintering, the ceramic core has a microstructure comprising an erbia-alumina garnet phase and an unreacted ceramic filler phase (e.g. alumina).
摘要翻译：一种陶瓷芯，其在核心烧结之前包括单独的或与第二陶瓷填料材料（例如氧化铝）混合的铒填料，以及粘合剂，以提供与用于制造涡轮叶片的超级合金相对不反应的芯在长时间的定向凝固（DS）中尺寸稳定，通过化学浸出技术可去除，并且在后期检查操作中可以检测到增强的X射线。在芯烧结之后，陶瓷芯具有包含铒 - 氧化铝石榴石相和未反应的陶瓷填料相（例如氧化铝）的微结构。

2. 发明授权

US07258158B2 Increasing stability of silica-bearing material 失效
标题翻译：提高含硅材料的稳定性
公开(公告)号：US07258158B2
公开(公告)日：2007-08-21
申请号：US11186420
申请日：2005-07-21
申请人： Bart M. Kilinski , Eliot S. Lassow , William B. Carothers
发明人： Bart M. Kilinski , Eliot S. Lassow , William B. Carothers
IPC分类号： B22C9/00
CPC分类号： B22C1/18 , B22C1/183 , B22C9/04
摘要： Method and apparatus for prolonging the stability (working life) of a ceramic slurry and other aqueous mixture or dispersion containing a liquid silica-bearing or other component as well as the raw liquid silica-bearing component in ambient air over time by providing a gas blanket that reduces exposure to ambient air.
摘要翻译：一种用于延长陶瓷浆料和含有含二氧化硅的液体或其它组分的其它含水混合物或分散体以及环境空气中含有原始液体二氧化硅的组分随时间变化的稳定性（工作寿命）的方法和装置，减少暴露于环境空气。

3. 发明授权

US4966225A Ceramic shell mold for investment casting and method of making the same 失效
标题翻译：陶瓷壳模具用于熔模铸造及其制作方法
公开(公告)号：US4966225A
公开(公告)日：1990-10-30
申请号：US512502
申请日：1990-04-20
申请人： Paul R. Johnson , Eliot S. Lassow
发明人： Paul R. Johnson , Eliot S. Lassow
IPC分类号： B22C9/06
CPC分类号： B22C9/061
摘要： A ceramic shell mold and method of making the same. The ceramic shell mold includes a facecoat layer comprised of a first ceramic material. A plurality of alternating layers are formed overlaying the facecoat layer. The alternating layers are comprised of a second ceramic material and a third ceramic material, the third ceramic material having thermophysical properties different than the second ceramic material. The second ceramic material and the third ceramic material are preferably a zircon-based material and an alumina-based material, respectively. The resultant ceramic shell mold has a greater high temperature creep resistance than a shell mold formed solely from the second ceramic material or solely from the third ceramic material.
摘要翻译：陶瓷壳模具及其制造方法。陶瓷壳模具包括由第一陶瓷材料构成的面涂层。多个交替层形成在覆盖面涂层上。所述交替层由第二陶瓷材料和第三陶瓷材料构成，所述第三陶瓷材料具有与第二陶瓷材料不同的热物理性质。第二陶瓷材料和第三陶瓷材料优选分别是锆石基材料和氧化铝基材料。所得到的陶瓷壳模具比仅由第二陶瓷材料或仅由第三陶瓷材料形成的壳模具具有更高的耐高温蠕变性。

4. 发明授权

US4703806A Ceramic shell mold facecoat and core coating systems for investment casting of reactive metals 失效
标题翻译：陶瓷外壳模具面漆和核心涂层系统用于投资铸造活性金属
公开(公告)号：US4703806A
公开(公告)日：1987-11-03
申请号：US884591
申请日：1986-07-11
申请人： Eliot S. Lassow , Paul R. Johnson , Sidney R. Whitaker , Manuel Guerra, Jr.
发明人： Eliot S. Lassow , Paul R. Johnson , Sidney R. Whitaker , Manuel Guerra, Jr.
IPC分类号： B22C9/02 , B22C3/00 , B22C9/04 , B22C1/06
CPC分类号： B22C3/00
摘要： An yttria-based slurry comprising a dense grain yttria powder and a non-aqueous-based binder is used as a mold facecoat and corecoat for investment casting of reactive metals such as titanium and titanium alloys.

5. 发明授权

US06237671B1 Method of casting with improved detectability of subsurface inclusions 有权
标题翻译：具有改进的地下夹杂物的可检测性的铸造方法
公开(公告)号：US06237671B1
公开(公告)日：2001-05-29
申请号：US09390173
申请日：1999-09-07
申请人： Eliot S. Lassow , George R. Strabel , Kelly A. Koziol
发明人： Eliot S. Lassow , George R. Strabel , Kelly A. Koziol
IPC分类号： B22D4600
CPC分类号： B22C1/00 , B22C1/165 , B22D21/005 , B22D46/00
摘要： Method of making a casting by investment casting of a metal or alloy, especially titanium and its alloys, in a ceramic investment shell mold in a manner to provide enhanced x-ray detectability of any sub-surface ceramic inclusions that may be present below exterior surfaces of the casting. The method involves forming a ceramic mold facecoat and/or back-up layer including erbia or other x-ray or neutron-ray detectable ceramic component. The facecoat/back-up layer is/are formed using a ceramic slurry comprising erbia and other optional ceramic particulates, an inorganic binder, and an inorganic pH control agent. The slurry is applied to a pattern of component to be cast to form the mold. A metal or alloy is cast in the mold, and the solidified casting is removed from the mold. The casting is subjected to radiography to detect any sub-surface ceramic inclusions below the exterior surface thereof not detectable by visual inspection of the casting.
摘要翻译：通过在陶瓷投资壳模具中熔融铸造金属或合金，特别是钛及其合金来制造铸造的方法，以提供可能存在于外表面下方的任何次表面陶瓷夹杂物的增强的X射线可检测性的铸造。该方法包括形成包括铒或其他x射线或中子线可检测陶瓷组分的陶瓷模具面涂层和/或支撑层。使用包含铒和其它任选的陶瓷颗粒的陶瓷浆料，无机粘合剂和无机pH控制剂来形成表面涂层/后备层。将浆料施加到要铸造的部件的图案上以形成模具。将金属或合金铸造在模具中，并将凝固的铸件从模具中取出。对铸件进行射线照相以检测其外表面下方的任何次表面陶瓷夹杂物通过目视检查铸件不可检测。

6. 发明授权

US5975188A Method of casting with improved detectability of subsurface inclusions 失效
标题翻译：具有改进的地下夹杂物的可检测性的铸造方法
公开(公告)号：US5975188A
公开(公告)日：1999-11-02
申请号：US960995
申请日：1997-10-30
申请人： Eliot S. Lassow , George R. Strabel , Kelly A. Koziol
发明人： Eliot S. Lassow , George R. Strabel , Kelly A. Koziol
IPC分类号： B22C1/00 , B22C1/16 , B22C9/04 , B22D21/00 , B22D29/00 , B22D46/00 , B22C1/02
CPC分类号： B22C1/00 , B22C1/165 , B22D21/005 , B22D46/00
摘要： Method of making a casting by investment casting of a metal or alloy, especially titanium and its alloys, in a ceramic investment shell mold in a manner to provide enhanced x-ray detectability of any sub-surface ceramic inclusions that may be present below exterior surfaces of the casting. The method involves forming a ceramic mold facecoat and/or back-up layer including erbia or other x-ray or neutron-ray detectable ceramic component. The facecoat/back-up layer is/are formed using a ceramic slurry comprising erbia and other optional ceramic particulates, an inorganic binder, and an inorganic pH control agent. The slurry is applied to a pattern of component to be cast to form the mold. A metal or alloy is cast in the mold, and the solidified casting is removed from the mold. The casting is subjected to radiography to detect any sub-surface ceramic inclusions below the exterior surface thereof not detectable by visual inspection of the casting.
摘要翻译：通过在陶瓷投资壳模具中熔融铸造金属或合金，特别是钛及其合金来制造铸造的方法，以提供可能存在于外表面下方的任何次表面陶瓷夹杂物的增强的X射线可检测性的铸造。该方法包括形成包括铒或其他x射线或中子线可检测陶瓷组分的陶瓷模具面涂层和/或支撑层。使用包含铒和其它任选的陶瓷颗粒的陶瓷浆料，无机粘合剂和无机pH控制剂来形成表面涂层/后备层。将浆料施加到要铸造的部件的图案上以形成模具。将金属或合金铸造在模具中，并将凝固的铸件从模具中取出。对铸件进行射线照相以检测其外表面下方的任何次表面陶瓷夹杂物通过目视检查铸件不可检测。

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