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公开(公告)号：RU2210478C2
公开(公告)日：2003-08-20
申请号：RU98118462
申请日：1997-03-10
Applicant: UNITED TECHNOLOGIES CORP , INTERNAT CT FOR PATON INST KIE
Inventor： MOVCHAN BORIS B , KORZH ALEXANDER V , TOPAL VALERY
Abstract: FIELD: manufacture of metallic objects with inner complex-shape cavities, possibly in different branches of machine engineering for making turbines, optical systems of lasers and so on. SUBSTANCE: method comprises steps of making base with desired constructional strength having in its surface recesses and(or) grooves corresponding to inner size of ready article; filling recesses and grooves with easy-to-remove material; forming laminate outer coating of predetermined thickness by electron beam sputtering; preliminarily applying on base thin layer of easy-to-melt metal or material suitable for creating low temperature eutectics with sputtered material of outer coating; performing thermal softening for forming envelope with preset stable homogenous structure and with multilayer or gradually changing composition; removing easy-to-remove material by sublimation at heat treatment. EFFECT: possibility for applying coatings with necessary thickness, with desired physical and mechanical properties but with different chemical contents. 3 cl, 3 dwg, 4 ex
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公开(公告)号：DE69901450D1
公开(公告)日：2002-06-13
申请号：DE69901450
申请日：1999-06-04
Applicant: UNITED TECHNOLOGIES CORP , INTERNAT CT FOR ELECTRON BEAM
Inventor： MOVCHAN MARINA B , KORZH ALEXANDER V , RUDOY JURY E
Abstract: The invention relates to the field of electron beam technologies of production on a metal substrate of functionally gradient protective coatings with the outer ceramic layer or metal-ceramic layer by evaporation and subsequent condensation at moderate temperatures of the substrate (300 to 500 DEG C) of mixtures of metals and metal oxides having different melting temperature and vapour pressure at the evaporation temperature. To achieve a high strength of adhesion of the coating to the substrate at moderate temperatures (300 to 500 DEG C) and high hardness the proposed composition contains Sn and Cr as metals, and Al2O3 and Cr2O3 as metal oxides. To improve the adhesion strength and hardness of the coating A1 and MgO can be further added to the composition.
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公开(公告)号：DE69405246T2
公开(公告)日：1998-01-02
申请号：DE69405246
申请日：1994-11-07
Applicant: UNITED TECHNOLOGIES CORP
Inventor： MOVCHAN BORIS B , KORZH ALEXANDER V , LEMKEY FRANKLIN D , SNOW DAVID B
Abstract: Methods are disclosed to render a wide range of titanium alloys superplastic at temperatures so low that oxidation is not a problem. Alpha beta alloys are vapor deposited to a particular microstructure which is superplastic. Alpha alloys and beta alloys are coevaporated with stabilizing particles.
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公开(公告)号：AU3282897A
公开(公告)日：1997-10-17
申请号：AU3282897
申请日：1997-03-10
Applicant: UNITED TECHNOLOGIES CORP , INTERNAT CT FOR PATON INST KIE
Inventor： MOVCHAN BORIS B , KORZH ALEXANDER V , TOPAL VALERY
IPC: B23P15/04 , B22D23/00 , B22D29/00 , B23P15/02 , C23C14/02 , C23C14/06 , C23C14/30 , F01D5/18 , B22D25/02 , C23C4/00 , C23C6/00
Abstract: A method of manufacturing hollow objects of complex shapes with elaborated internal cavities and channels in order to reduce the weight and/or for highly effective cooling systems, for example gas turbine blades, powerful laser optic systems, combustion chambers, etc. In itself the method includes the preparation of the framework to assure the desired constructional strength with grooves and/or pockets on the surface, which correspond to the internal dimensions of the finished metal product; filling the grooves and pockets with easily removed material; forming a multilayered outer coating shell of the necessary thickness by using a cathode-ray method with preliminary spraying of the framework with a thin layer of easily melted metal or material able to develop eutectic low-temperature with the sprayed material of the outer shell; and with a subsequent thermoplastic treatment to obtain a shell with a given stable and homogeneous structure and a multilayered or gradually varying composition; removal of the easily removed filler material by sublimation at the time of the thermal treatment. Chlorides, fluorides and/or their mixtures can be used as the easily removed material, with active and inactive additives to improve the mechanical and thermal properties of the mixtures, and modifying the structures and the properties of the internal surfaces with the spraying process and the thermoplastic treatment. 00000
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