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nb‑ti‑zrb 2 ‑tic composite material and its preparation method

An nb-ti-zrb2-tic, composite material technology, applied in the field of composite material preparation, can solve the problems of restricting the application of niobium and niobium alloy, poor oxidation resistance, strength reduction, etc., to improve high temperature oxidation resistance and increase strength. , the effect of reducing the density

Active Publication Date: 2018-02-06
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the temperature increases, the strength drops sharply, and its oxidation resistance is poor. Pure niobium even occurs "pest" oxidation at 600°C, which seriously restricts the application of niobium and niobium alloys.

Method used

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  • nb‑ti‑zrb <sub>2</sub> ‑tic composite material and its preparation method

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Comparison scheme
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Embodiment 1

[0022] In this embodiment Nb-Ti-ZrB 2 -TiC composite material is composed of the following components by mass percentage: Ti20%, ZrB 2 5%, TiC 10%, the balance is Nb and unavoidable impurities.

[0023] In this embodiment Nb-Ti-ZrB 2 -The preparation method of TiC composite material comprises the following steps:

[0024] Step 1, Ti powder, ZrB 2 TiC powder, TiC powder and Nb powder are placed in a ball mill, mixed uniformly by wet ball milling, then dried under vacuum conditions, and pulverized after drying to obtain a mixed powder; preferably, the mass purity of the Ti powder is not less than 99%, the ZrB 2 The mass purity of the TiC powder is not less than 99%, the mass purity of the TiC powder is not less than 99%, the mass purity of the Nb powder is not less than 99.9%, the particle size of the Ti powder is not greater than 10 μm, and the ZrB powder 2 The particle size of the TiC powder is not greater than 5 μm, the particle size of the TiC powder is not greater than...

Embodiment 2

[0029] In this embodiment Nb-Ti-ZrB 2 -TiC composite material is composed of the following components by mass percentage: Ti10%, ZrB 2 3%, TiC 5%, the balance being Nb and unavoidable impurities.

[0030] In this embodiment Nb-Ti-ZrB 2 -The preparation method of TiC composite material comprises the following steps:

[0031] Step 1, Ti powder, ZrB 2 TiC powder, TiC powder and Nb powder are placed in a ball mill, mixed uniformly by wet ball milling, then dried under vacuum conditions, and pulverized after drying to obtain a mixed powder; preferably, the mass purity of the Ti powder is not less than 99%, the ZrB 2 The mass purity of the TiC powder is not less than 99%, the mass purity of the TiC powder is not less than 99%, the mass purity of the Nb powder is not less than 99.9%, the particle size of the Ti powder is not greater than 10 μm, and the ZrB powder 2 The particle size of the TiC powder is not greater than 5 μm, the particle size of the TiC powder is not greater th...

Embodiment 3

[0035] In this embodiment Nb-Ti-ZrB 2 -TiC composite material is composed of the following components by mass percentage: Ti30%, ZrB 2 7%, TiC 15%, the balance is Nb and unavoidable impurities.

[0036] In this embodiment Nb-Ti-ZrB 2 -The preparation method of TiC composite material comprises the following steps:

[0037] Step 1, Ti powder, ZrB 2 TiC powder, TiC powder and Nb powder are placed in a ball mill, mixed uniformly by wet ball milling, then dried under vacuum conditions, and pulverized after drying to obtain a mixed powder; preferably, the mass purity of the Ti powder is not less than 99%, the ZrB 2 The mass purity of the TiC powder is not less than 99%, the mass purity of the TiC powder is not less than 99%, the mass purity of the Nb powder is not less than 99.9%, the particle size of the Ti powder is not greater than 10 μm, and the ZrB powder 2 The particle size of the TiC powder is not greater than 5 μm, the particle size of the TiC powder is not greater than...

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Abstract

The invention discloses a Nb-Ti-ZrB2-TiC composite material. The Nb-Ti-ZrB2-TiC composite material is composed of, in mass percentage, 10-30% of Ti, 3-7% of ZrB2, 5-15% of TiC and the balance Nb and inevitable impurities. The invention further discloses a preparation method of the Nb-Ti-ZrB2-TiC composite material. The preparation method includes the steps of 1, placing Ti powder, ZrB2 powder, TiC powder and Nb powder into a ball mill, mixing the Ti powder, the ZrB2 powder, the TiC powder and the Nb powder uniformly and smashing the Ti powder, the ZrB2 powder, the TiC powder and the Nb powder for obtaining mixed powder after the Ti powder, the ZrB2 powder, the TiC powder and the Nb powder are dried; and 2, placing the mixed powder into a hot-pressing sintering furnace, carrying out hot-pressing sintering and obtaining the Nb-Ti-ZrB2-TiC composite material. The Nb-Ti-ZrB2-TiC composite material is excellent in strength and good in indoor-temperature plasticity and high temperature oxidation resistance and can be applied to the air environment with the temperature reaching 1300 DEG C.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, in particular to a kind of Nb-Ti-ZrB 2 -TiC composite material and preparation method thereof. Background technique [0002] Modern aerospace engines not only have high thrust, but also continuously improve the thrust-to-weight ratio. With the improvement of the thrust and efficiency of aerospace engines, the service temperature of the key parts at the hot end of the engine continues to increase. The nickel-based and cobalt-based superalloy materials currently used in gas turbine engines have reached their maximum service temperature limit, that is, the working temperature has reached or exceeded 80% of their melting point. Future aero-engines require the hot-end key components to be used for a long time under high temperature and complex load conditions above 1200°C. Therefore, traditional nickel-based and cobalt-based superalloys can no longer meet the needs of the next...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C22C30/00C22C32/00C22C1/05C22C1/10
CPCC22C1/05C22C27/02C22C30/00C22C32/0047
Inventor 喻吉良王峰夏明星郑欣刘辉
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH