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1.发明申请公开(公告)号：US20170183508A1
公开(公告)日：2017-06-29
申请号：US15386479
申请日：2016-12-21
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Shizhong WANG , Martin Matthew MORRA , Lei CAO , Yiteng JIN , Xiao ZHANG , Qunjian HUANG , Minghu GUO , Xiaoyuan LOU , Xiaxi LI , Qijia FU , Qianqian XIN
Abstract: A method for protecting a surface of an article from sulfate corrosion resulting from exposure to a sulfate containing material at an elevated temperature includes coating the surface with a nickel based material to form an anti-corrosion coating. The nickel based material includes NiO, a spinel of formulation AB2O4, or a combination thereof, wherein A includes nickel, and B includes iron or a combination of manganese and a B site dopant.
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公开(公告)号：US20180057920A1
公开(公告)日：2018-03-01
申请号：US15252783
申请日：2016-08-31
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Martin Matthew MORRA , Andrew Joseph DETOR , Etienne MARTIN , Reza SHARGHI-MOSHTAGHIN
CPC classification number: C22F1/10 , C21D2211/004 , C22C19/03 , C22C19/056 , C22C30/00 , F01D5/28 , F05D2240/30 , F05D2300/175 , F05D2300/608
Abstract: Provided is a method of fabricating an article, including deforming an ingot of a nickel-based superalloy to form an intermediate article, forming a substantially homogeneous dispersion of Laves phase precipitates within the intermediate article, wherein the Laves phase precipitates are present at a concentration of at least about 0.05% by volume and the precipitates have a mean diameter of less than one micron. Also provided is a nickel-based superalloy including a substantially homogeneous dispersion of Laves phase precipitates, wherein the intergranular and transgranular Laves phase precipitates are present at a concentration of at least about 0.1% by volume and wherein the precipitates have a mean diameter of less than one micron. Precipitation of Laves phase may control microstructure during Thermo-mechanical processing and produce superalloys with refined grain size.
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