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Corrosion-resistant ceramic matrix composite in TiAlZr/ZrO2 deep sea hydrothermal fluid area and preparation method thereof

A composite material and deep-sea hydrothermal technology, applied in the field of ceramic matrix composite materials, can solve the problems that cannot meet the requirements of comprehensive mechanical properties and corrosion resistance at the same time, and achieve excellent comprehensive mechanical properties and corrosion resistance, good corrosion performance, distribution uniform effect

Inactive Publication Date: 2012-10-03
上海大境海洋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to overcome the deficiency that ordinary materials cannot meet the requirements of comprehensive mechanical properties and corrosion resistance in the extreme environment of deep-sea hydrothermal areas at the same time, and propose a new type of ceramic matrix composite material with excellent performance, advanced and practical, by introducing a certain amount of simple substance Metal zirconium powder is used to stabilize the TiAl intermetallic compound to form a TiAlZr ternary intermetallic compound, which also has excellent corrosion resistance and protects the ZrO 2 Ceramic matrix, so as to achieve a better composite purpose, so that the prepared TiAlZr / ZrO 2 It is expected to be used in deep sea structural or functional materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 1.21g, 2.15g, 4.08g of Al powder, Ti powder, and Zr powder with a purity greater than 99% and a particle size of 100 meshes, and ZrO 2 Powder 66.57g, and add 1.48g stearic acid as process control agent. Put the above-mentioned powder into a high-energy ball mill jar, pass through nitrogen protection, and ball mill at 400 rpm for 6 hours to prepare a mixed powder. Take the powder out of a glove box filled with nitrogen or argon protective atmosphere and put it into a graphite mold, put it in a multi-functional sintering furnace, vacuumize to 0.1Pa, raise the temperature to 600°C at a rate of 20°C / min, and keep it warm After 1 hour, continue to heat up to 1600°C while applying a pressure of 40MPa, and hold the temperature for 1 hour. Preparation of TiAlZr / ZrO with furnace cooling 2 ceramic matrix composites.

[0021] The density of the material obtained in this example is 100%, the flexural strength at room temperature is 921.7 MPa, and the fracture toughness is ...

Embodiment 2

[0023] Weigh 2.4g, 4.27g, 8.09g of Al powder, Ti powder, and Zr powder with a purity greater than 99% and a particle size of 100 meshes, and ZrO 2Powder 60.03g, and add 2.24g stearic acid as process control agent. Put the above-mentioned powder into a high-energy ball mill tank, pass through nitrogen protection, and ball mill at 400 rpm for 8 hours to prepare a mixed powder. Take the powder out of a glove box filled with nitrogen or argon protective atmosphere and put it into a graphite mold, put it in a multi-functional sintering furnace, vacuumize to 0.1Pa, raise the temperature to 600°C at a rate of 20°C / min, and keep it warm After 1 hour, continue to heat up to 1600°C while applying a pressure of 40MPa, and hold the temperature for 1 hour. Preparation of TiAlZr / ZrO with furnace cooling 2 ceramic matrix composites.

[0024] The density of the material obtained in this example is 100%, the flexural strength at room temperature is 893.4 MPa, and the fracture toughness is 6...

Embodiment 3

[0026] Weigh 3.76g, 6.68g, 12.67g of Al powder, Ti powder, and Zr powder with a purity greater than 99% and a particle size of 100 meshes, and ZrO 2 Powder 54.12g, and add 3.09g stearic acid as process control agent. Put the above-mentioned powder into a high-energy ball mill tank, pass through nitrogen protection, and ball mill at 400 rpm for 10 hours to prepare a mixed powder. Take the powder out of a glove box filled with nitrogen or argon protective atmosphere and put it into a graphite mold, put it in a multi-functional sintering furnace, vacuumize to 0.1Pa, raise the temperature to 600°C at a rate of 20°C / min, and keep it warm After 2h, continue heating to 1500°C, apply a pressure of 30MPa at the same time, keep the temperature and hold the pressure for 1h, and prepare TiAlZr / ZrO with furnace cooling 2 ceramic matrix composites.

[0027] The density of the material obtained in this example is 99%, the flexural strength at room temperature is 841.4 MPa, and the fracture...

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Abstract

The invention discloses a corrosion-resistant ceramic matrix composite in a TiAlZr / ZrO2 deep sea hydrothermal fluid area and a preparation method thereof. The composite comprises a ZrO2 matrix phase and a TiAlZr intermetallic compound, wherein the ZrO2 accounts for 50 to 90% of the total weight of the composite; and the TiAlZr intermetallic compound accounts for 10 to 50% of the total weight of the composite. During the preparation process of the composite, Ti powder, Al powder and Zr powder reacts with one another to generate the TiAlZr intermetallic compound with better toughness, and uniformly distributed in the ZrO2 matrix with high strength and hardness; the TiAlZr plays a role in toughening the ZrO2 matrix so as to enable the TiAlZr / ZrO2 ceramic matrix composite prepared through hot pressed sintering to have excellent comprehensive mechanical properties and corrosion resistance, thereby adapting to the extreme environments of the deep sea hydrothermal fluid area.

Description

technical field [0001] The invention relates to a ceramic matrix composite material, in particular to a TiAlZr / ZrO 2 Corrosion-resistant ceramic matrix composites in deep-sea hydrothermal areas and their preparation methods. Background technique [0002] In the depths of the seabed at a depth of 4,000 to 6,000 meters in all oceans of the world, there are widely distributed oceanic polymetallic nodules, cobalt-rich crusts, hydrothermal sulfides, and deep-sea organisms containing more than 70 elements such as manganese, copper, cobalt, nickel, and iron. Rich resources such as genes, and deep-sea oil and natural gas reserves account for 45% of the world's total, which is a valuable asset for the sustainable development of human society. Therefore, since the 1990s, the United States, France, the United Kingdom, Japan, Russia and other scientific and technological powers have established comprehensive marine management agencies, formulated marine development plans, and placed th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/50C04B35/622
Inventor 尹衍升董丽华刘伯洋许黎明范春华范艳华周云王东胜
Owner 上海大境海洋新材料有限公司
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