公开(公告)号：US20160214165A1

公开(公告)日：2016-07-28

申请号：US14605224

申请日：2015-01-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Cathleen Ann HOEL ,  John Thomas LEMAN ,  Thomas Francis MCNULTY ,  Michael Joseph O'BRIEN ,  Ayesha Maria GONSALVES ,  Matthew Thomas JOHNSON ,  Frederic Joseph KLUG

IPC: B22C1/02 ,  B22C9/04 ,  B22C9/10

CPC classification number: B22C1/02 ,  B22C9/04 ,  B22C9/10 ,  C04B35/16 ,  C04B35/632 ,  C04B35/6325 ,  C04B38/0605 ,  C04B2111/00939 ,  C04B2235/3244 ,  C04B2235/3418 ,  C04B2235/483 ,  C04B2235/6022 ,  C04B2235/606 ,  C08G77/12 ,  C08G77/20 ,  C08K3/36 ,  C08K2003/2244 ,  C08L83/00 ,  C08L83/04

Abstract: Methods and compositions for forming porous ceramic articles are provided. The method is forming a composition including liquid siloxanes, ceramic particles, a catalyst, and a pore-former; shaping the composition; curing the composition to form a green body; volatilizing the pore-former before or after curing the composition; and firing the green body. The pore-former is a silicon-bearing agent with an average molecular weight under 1300 grams per mole, or a molecule with a molecular weight under 1,000 grams per mole and a freezing point between −40° C. and 25° C. that is soluble in the liquid. The composition comprises liquid siloxanes, ceramic particles, a catalyst, and a pore-former, which is an agent with an average molecular weight under 1300 grams per mole or a molecule with a molecular mass under 1,000 grams per mole and a freezing point between −40° C. and 25° C. that is soluble in the liquid.

Abstract translation: 提供了形成多孔陶瓷制品的方法和组合物。 该方法是形成包括液体硅氧烷，陶瓷颗粒，催化剂和成孔剂的组合物; 塑造组成; 固化组合物以形成生坯体; 在固化组合物之前或之后挥发成孔剂; 并发射绿色的身体。 成孔剂是平均分子量低于1300克/摩尔的含硅剂，或分子量低于1,000克/摩尔的分子和在-40℃和25℃之间的凝固点，即 溶于液体。 该组合物包含液体硅氧烷，陶瓷颗粒，催化剂和成孔剂，其是平均分子量低于1300克/摩尔的试剂或分子量小于1,000克/摩尔的分子和 - 40℃和25℃，其可溶于液体。

公开(公告)号：US20170144216A1

公开(公告)日：2017-05-25

申请号：US14945602

申请日：2015-11-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Xi YANG ,  John Thomas LEMAN ,  Anthony Yu-Chung KU ,  Tao LI ,  John POLLINGER

IPC: B22C9/10 ,  C04B35/10

CPC classification number: B22C9/10 ,  C04B35/10

Abstract: The present disclosure generally relates to a ceramic core comprising predominantly mullite, which is derived from a precursor comprising alumina particles and siloxane binders. Free silica is present in the ceramic body, but is largely unavailable for reaction with metal alloys used in investment casting. Methods of making cast metal articles are also disclosed.