High-hardness iron-based high-chromium ceramic composite coating for ship side plate and preparation method for high-hardness iron-based high-chromium ceramic composite coating

A ceramic composite and ship side plate technology, applied in the field of metallurgical coating, can solve the problems of poor wear resistance, easy peeling, poor impact resistance, etc., achieve excellent seawater corrosion resistance, improve bonding, improve hardness and resistance abrasive effect

Inactive Publication Date: 2015-11-11
MAANSHAN XINGLONG FOUNDRY CO LTD
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Problems solved by technology

The article "Seawater Corrosion Resistance of Iron-Based High Chromium Plasma Beam Surface Metallurgical Coatings" uses iron, chromium and other elements to spray plasma beam surface metallurgy technology. The shortcomings of peeling, corrosion resistance, poor wear resistance, poor impact resistance, poor antibacterial and antifouling properties need to be improved

Method used

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Embodiment Construction

[0014] A high-hardness ship side plate iron-based high-chromium ceramic composite coating, made of the following raw materials in parts by weight (kg): graphite powder 1.7, chromium powder 26, nickel powder 4.5, silicon powder 4.2, boron powder 0.3, iron powder 41. TiAl powder 11, B 4 C powder 18, titanium iron powder 2.5, pure zirconium powder 1.5, high carbon ferrochrome powder 3.5, chromium nitride powder 4.5.

[0015] The iron-based high-chromium ceramic composite coating of the high-hardness ship side plate is characterized in that:

[0016] (1) Mix TiAl powder with B 4 C powder and chromium nitride powder are ball milled and mixed, sent into a vacuum furnace, kept at 1580°C and a corresponding pressure of 14 MPa, kept for 40 minutes, taken out, water cooled, crushed, and then ball milled until the particle size is less than 130 μm to obtain a powder;

[0017] (2) Mix other remaining ingredients with the powder obtained in step (1), and perform ball milling to a particl...

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Abstract

The invention discloses a high-hardness iron-based high-chromium ceramic composite coating for a ship side plate. The high-hardness iron-based high-chromium ceramic composite coating is prepared from the following raw materials in parts by weight: 1.6-1.8 part of graphite powder, 25-27 parts of chromium powder, 4.3-4.6 parts of nickel powder, 4.1-4.4 parts of silicon powder, 0.3-0.4 part of boron powder, 40-42 parts of iron powder, 10-12 parts of TiAl powder, 17-19 parts of B4C powder, 2-3 parts of ferrotitanium powder, 1-2 parts of pure zirconium powder, 3-4 parts of high carbon ferro-chrome powder and 4-5 parts of chromium nitride powder. The metallurgical coating uses the iron-based high-chromium material, and has excellent seawater corrosion resistance; TiAl and B4C are subjected to alloying treatment, so that a ceramic phase and a metal phase are tightly bound, thereby improving binding performance, seawater corrosion resistance, impact resistance and wear resistance of the iron-based material; and the ferrotitanium powder, the pure zirconium powder, the high carbon ferro-chrome powder, the chromium nitride powder, hard particles and matrix are matched very well, thereby effectively improving the hardness and the rear resistance of the coating.

Description

technical field [0001] The invention relates to the field of metallurgical coatings, in particular to a high-hardness ship side plate iron-based high-chromium ceramic composite coating and a preparation method thereof. Background technique [0002] There are many ways to solve the seawater corrosion resistance of materials, and surface coating protection is a common method. In this field, in addition to the widely used organic coatings, thermal spraying of zinc-aluminum alloys is also a commonly used long-term anti-corrosion method for marine steel structures. However, thermal spraying requires strict surface pretreatment, and its construction in humid marine atmosphere is limited. In addition, organic coatings and thermal sprayed zinc-aluminum alloy anti-corrosion coatings have poor impact and wear resistance. [0003] The plasma beam surface metallurgy technology uses the plasma arc as the heat source and adopts the method of synchronous powder feeding to clad a layer of...

Claims

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Application Information

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IPC IPC(8): C23C24/02
Inventor 张家俊
Owner MAANSHAN XINGLONG FOUNDRY CO LTD
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