公开(公告)号：WO1994024320A1

公开(公告)日：1994-10-27

申请号：PCT/US1994004150

申请日：1994-04-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  ALLEN, William, P. ,  BORNSTEIN, Norman, S. ,  CHIN, Stephen ,  DECRESCENTE, Michael ,  DUHL, David, N. ,  PARILLE, Donald, R. ,  PIKE, Roscoe, A. ,  SMEGGIL, John, G.

IPC: C22B09/14

CPC classification number: C22F1/10 ,  C21D3/02 ,  C22B9/14 ,  C22F1/02

Abstract: Superalloy articles are made more oxidation resistant by a process which includes heat treating the article in the presence of foreign chemical species, at a temperature at which the foreign chemical species reacts with and modifies any oxide film present on the article surface. The heat treatment is best carried out at a temperature above the gamma prime solvus temperature of the article and below the incipient melting temperature of the article. Alternatively, the heat treatment may be carried out within the range defined by the incipient melting temperature of the article and about 150 DEG C below the incipient melting temperature of the article. At such temperatures the foreign chemical species reacts with and modifies the oxide film on the article surface. Sulfur is then able to diffuse through such modified film, and a more oxidation resistant component is produced.

Abstract translation: 超合金制品通过包括在外来化学物质存在下在外部化学物质与物品表面上存在的任何氧化膜反应的温度下进行热处理的方法制成更耐氧化。 热处理最好在高于制品的γ'溶质温度并低于制品初始熔化温度的温度下进行。 或者，热处理可以在由制品的初始熔融温度限定的范围内进行，并且比制品的初始熔融温度低约150℃。 在这样的温度下，外来化学物质与制品表面上的氧化膜反应并改变。 然后硫能够扩散通过这种改性膜，并且产生更耐氧化的组分。

公开(公告)号：WO1993024683A1

公开(公告)日：1993-12-09

申请号：PCT/US1993003803

申请日：1993-04-22

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  BORNSTEIN, Norman, S. ,  CHIN, Stephen ,  DUHL, David, N. ,  PARILLE, Donald ,  SHAH, Dilip, M.

IPC: C30B29/52

CPC classification number: C22C19/057 ,  C22C19/056 ,  C30B11/00 ,  C30B29/52

Abstract: Single crystal superalloy castings are described which have excellent oxidation resistance. The oxidation resistance is due to the presence of small but effective amounts of magnesium in the casting. Single crystal castings containing magnesium in the range of 5-200 parts per million, by weight, are described. Up to 100 % of the magnesium could be substituted by an equal atomic percent of calcium. The superalloy further consists essentially of, by weight percent, 1-12 chromium, 2-12 cobalt, 0-2.5 molybdenum, 3-10 tungsten, 0-8 rhenium, 2.5-13 tantalum, 0-2 titanium, 4.5-6.5 aluminum, 0-0.5 hafnium, 0-0.1 carbon, 0.0005-0.0200 magnesium, remainder nickel.

Abstract translation: 描述了具有优异抗氧化性的单晶超合金铸件。 抗氧化性是由于在铸件中存在少量但有效量的镁。 描述了含有5-200重量ppm的镁的单晶铸件。 高达100％的镁可被等原子百分比的钙取代。 超合金还基本上由重量百分比为1-12铬，2-12钴，0-2.5钼，3-10钨，0-8铼，2.5-13钽，0-2钛，4.5-6.5铝 ，0-0.5铪，0-0.1碳，0.0005-0.0200镁，余量为镍。

公开(公告)号：EP1047653B1

公开(公告)日：2002-03-13

申请号：EP98965369.6

申请日：1998-11-06

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： McCLUSKEY, Philip, H. ,  EATON, Harry, E., Jr. ,  GODIN, Daniel, R. ,  FOSTER, George, E. ,  HARTER, H., David ,  CHIN, Stephen ,  COTNOIR, Glenn, A. ,  ELLIS, Charles, A.

IPC: C04B41/87

CPC classification number: C04B41/5037 ,  C04B41/009 ,  C04B41/87 ,  C23C4/11 ,  C23C4/134 ,  F01D5/288 ,  F05D2230/312 ,  F05D2240/55 ,  F05D2300/2261 ,  Y10T428/252 ,  C04B41/0072 ,  C04B41/4527 ,  C04B35/565 ,  C04B35/584 ,  C04B35/806

Abstract: Coatings containing at least 85 % by volume crystalline mullite with less than 15 % by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.

公开(公告)号：EP0694083A1

公开(公告)日：1996-01-31

申请号：EP94915803.0

申请日：1994-04-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： ALLEN, William P. ,  BORNSTEIN, Norman S. ,  CHIN, Stephen ,  DECRESCENTE, Michael ,  DUHL, David N. ,  PARILLE, Donald R. ,  PIKE, Roscoe A. ,  SMEGGIL, John G.

IPC: C21D3 ,  C22B9 ,  C22F1

CPC classification number: C22F1/10 ,  C21D3/02 ,  C22B9/14 ,  C22F1/02

Abstract: Superalloy articles are made more oxidation resistant by a process which includes heat treating the article in the presence of foreign chemical species, at a temperature at which the foreign chemical species reacts with and modifies any oxide film present on the article surface. The heat treatment is best carried out at a temperature above the gamma prime solvus temperature of the article and below the incipient melting temperature of the article. Alternatively, the heat treatment may be carried out within the range defined by the incipient melting temperature of the article and about 150 °C below the incipient melting temperature of the article. At such temperatures the foreign chemical species reacts with and modifies the oxide film on the article surface. Sulfur is then able to diffuse through such modified film, and a more oxidation resistant component is produced.

公开(公告)号：EP1047653A2

公开(公告)日：2000-11-02

申请号：EP98965369.6

申请日：1998-11-06

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： McCLUSKEY, Philip, H. ,  EATON, Harry, E., Jr. ,  GODIN, Daniel, R. ,  FOSTER, George, E. ,  HARTER, H., David ,  CHIN, Stephen ,  COTNOIR, Glenn, A. ,  ELLIS, Charles, A.

IPC: C04B41/87

CPC classification number: C04B41/5037 ,  C04B41/009 ,  C04B41/87 ,  C23C4/11 ,  C23C4/134 ,  F01D5/288 ,  F05D2230/312 ,  F05D2240/55 ,  F05D2300/2261 ,  Y10T428/252 ,  C04B41/0072 ,  C04B41/4527 ,  C04B35/565 ,  C04B35/584 ,  C04B35/806

Abstract: Coatings containing at least 85 % by volume crystalline mullite with less than 15 % by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.

公开(公告)号：EP0694083B1

公开(公告)日：1997-07-23

申请号：EP94915803.4

申请日：1994-04-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： ALLEN, William P. ,  BORNSTEIN, Norman S. ,  CHIN, Stephen ,  DECRESCENTE, Michael ,  DUHL, David N. ,  PARILLE, Donald R. ,  PIKE, Roscoe A. ,  SMEGGIL, John G.

IPC: C22B9/14 ,  C22F1/02 ,  C22F1/10

CPC classification number: C22F1/10 ,  C21D3/02 ,  C22B9/14 ,  C22F1/02

Abstract: Superalloy articles are made more oxidation resistant by a process which includes heat treating the article in the presence of foreign chemical species, at a temperature at which the foreign chemical species reacts with and modifies any oxide film present on the article surface. The heat treatment is best carried out at a temperature above the gamma prime solvus temperature of the article and below the incipient melting temperature of the article. Alternatively, the heat treatment may be carried out within the range defined by the incipient melting temperature of the article and about 150 °C below the incipient melting temperature of the article. At such temperatures the foreign chemical species reacts with and modifies the oxide film on the article surface. Sulfur is then able to diffuse through such modified film, and a more oxidation resistant component is produced.