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Preparation method of microbiological corrosion resistant A1N/Ti ceramic metal composite coating

A ceramic metal, microorganism-resistant technology, applied in the direction of metal material coating process, coating, non-metallic elements, etc., to achieve strong local corrosion resistance, improve corrosion resistance, and prevent corrosion.

Active Publication Date: 2019-12-27
XIAN SPECIAL EQUIP INSPECTION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The ceramic-metal composite coating prepared by the method has excellent microbial corrosion resistance and is used in the microbial corrosion working environment of long-distance pipeline steel. The coating material shows excellent microbial corrosion resistance and can meet the requirements of long-distance pipeline steel. The requirements of the working environment can effectively solve the problem of microbial corrosion of pipeline steel in long-distance pipelines, and it has a good application prospect in the field of long-distance pipeline protection

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  • Preparation method of microbiological corrosion resistant A1N/Ti ceramic metal composite coating
  • Preparation method of microbiological corrosion resistant A1N/Ti ceramic metal composite coating
  • Preparation method of microbiological corrosion resistant A1N/Ti ceramic metal composite coating

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Embodiment 1

[0029] The preparation method of the anti-microbial corrosion AlN / Ti ceramic-metal composite coating of the present embodiment comprises the following steps:

[0030] Step 1. Prepare AlN particles by carbothermal reduction method. The specific method is: weigh alumina and carbon black according to the mass ratio of 73:27, place the weighed alumina and carbon black in a wet ball mill for wet ball milling, Then dry the material after wet ball milling and place it in an atmosphere furnace, raise the temperature to 1400° C. at a rate of 10° C. / min under a flowing nitrogen atmosphere with a flow rate of 5 L / min, and keep it warm for 4 hours to obtain AlN particles; The mass purity of aluminum is not less than 99%, the average particle size of aluminum oxide is not greater than 30μm; the carbon content of the carbon black is not less than 99%, and the average particle size of carbon black is not greater than 200nm; the mass of AlN in the AlN particles is 100% AlN content is not less...

Embodiment 2

[0036] The preparation method of the anti-microbial corrosion AlN / Ti ceramic-metal composite coating of the present embodiment comprises the following steps:

[0037] Step 1. Prepare AlN particles by carbothermal reduction method. The specific method is: weigh alumina and carbon black according to the mass ratio of 73:27, place the weighed alumina and carbon black in a wet ball mill for wet ball milling, Then dry the material after wet ball milling and place it in an atmosphere furnace, raise the temperature to 1400° C. at a rate of 12° C. / min under a flowing nitrogen atmosphere with a flow rate of 5 L / min, and keep it warm for 4 hours to obtain AlN particles; The mass purity of aluminum is not less than 99%, the average particle size of aluminum oxide is not greater than 30μm; the carbon content of the carbon black is not less than 99%, and the average particle size of carbon black is not greater than 200nm; the mass of AlN in the AlN particles is 100% AlN content is not less...

Embodiment 3

[0042] The preparation method of the anti-microbial corrosion AlN / Ti ceramic-metal composite coating of the present embodiment comprises the following steps:

[0043] Step 1. Prepare AlN particles by carbothermal reduction method. The specific method is: weigh alumina and carbon black according to the mass ratio of 73:27, place the weighed alumina and carbon black in a wet ball mill for wet ball milling, Then dry the material after wet ball milling and place it in an atmosphere furnace, raise the temperature to 1400° C. at a rate of 15° C. / min under a flowing nitrogen atmosphere with a flow rate of 5 L / min, and keep it warm for 4 hours to obtain AlN particles; The mass purity of aluminum is not less than 99%, the average particle size of aluminum oxide is not greater than 30μm; the carbon content of the carbon black is not less than 99%, and the average particle size of carbon black is not greater than 200nm; the mass of AlN in the AlN particles is 100% AlN content is not less...

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Abstract

The invention discloses a preparation method of a microbiological corrosion resistant A1N / Ti ceramic metal composite coating. The preparation method of the microbiological corrosion resistant A1N / Ti ceramic metal composite coating comprises the steps of 1, using a carbon thermal reduction method to prepare A1N particles; 2, uniformly mixing TC4 titanium alloy powder and the A1N particles to obtainspraying powder; and 3, after the spraying powder is dried, spraying the spraying powder to the surface of pipeline steel by using a supersonic flame spraying process so as to obtain the microbiological corrosion resistant A1N / Ti ceramic metal composite coating. According to the preparation method of the microbiological corrosion resistant A1N / Ti ceramic metal composite coating, the prepared ceramic metal composite coating possesses extremely excellent microbiological corrosion resistant performance and is used for a microbiological corrosion working environment of pipeline steel of a long transmission pipeline; the coating material shows excellent microbiological corrosion resistant performance; requirements on the working environment of the pipeline steel of the long transmission pipeline can be met; the problem of the microbiological corrosion of the pipeline steel of the long transmission pipeline can be effectively solved; and the coating material has good application prospect inthe field of long transmission pipeline protection.

Description

technical field [0001] The invention belongs to the technical field of preparation of ceramic-metal composite coatings, and in particular relates to a method for preparing a microbial corrosion-resistant AlN / Ti ceramic-metal composite coating. Background technique [0002] With the rapid development of my country's oil and energy industry in recent years, the mileage of buried pipelines has become longer and longer, reaching 80,000 kilometers, accounting for 2.5% of the world's total. The transportation of 70% of domestic oil and 99% of natural gas depends on pipeline transportation. Since most of the long-distance pipelines are buried under the soil, the corrosion problem caused by contact with the soil accounts for the largest proportion of the total corrosion, which can lead to serious accidents such as pipeline perforation, leakage and cracking. The research on the corrosion of long-distance pipelines is mainly Study its corrosion problems in contact with soil. In recen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06C23C4/137C23C4/02C01B21/068
CPCC01B21/0685C01P2004/03C23C4/02C23C4/067C23C4/129C23C4/137
Inventor 杨旭鲁元孙福洋张真陈梦诗
Owner XIAN SPECIAL EQUIP INSPECTION INST
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