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A kind of oxide ceramic reinforced steel matrix composite material and preparation method thereof

A technology of oxide ceramics and composite materials, used in mechanical equipment, heat exchange equipment, rotors, etc., can solve the problems of weak bonding force, unable to fundamentally solve and weaken the mechanical properties of ceramic reinforced metal matrix composite products, etc. Achieve the effect of good performance, easy automation, and suitable for large-scale industrial production

Active Publication Date: 2018-01-12
周玉成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using ceramics as the skeleton, adding metals such as nickel or titanium as a binder, making a prefabricated body, and then compounding, the wettability is improved to a certain extent, and the same as the coating method, it cannot fundamentally solve the problem
[0009] Among the ceramic reinforced metal matrix composites obtained by the above three methods, the combination of ceramics and metals is mechanically combined, and the bonding force is not strong, which weakens the mechanical properties of ceramic reinforced metal matrix composite products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The oxide ceramic reinforced steel matrix composite material of this embodiment is made by the following method:

[0037] 1) Take molybdenum alloy powder, after high-energy ball milling for 30 hours, add water and polyvinyl alcohol to mix to make a slurry; wherein, the molybdenum alloy powder is composed of the following components by mass percentage: Ni 3%, Mo 97%; polyethylene The added quality of alcohol is 3% of molybdenum alloy powder quality;

[0038]2) Coat the slurry obtained in step 1) on the surface of alumina ceramics, dry at 60°C, place in a sintering furnace, and sinter at 1650°C for 3 hours under vacuum conditions to form a molybdenum metal layer with a thickness of 20 μm on the surface of the ceramics. get sintered body;

[0039] 3) Using the sand casting method, placing the sintered body obtained in step 2) in a mold, and after being fixed, pouring high-chromium cast iron molten iron at a temperature of 1500° C., and casting to form the finished product...

Embodiment 2

[0042] The oxide ceramic reinforced steel matrix composite material of this embodiment is made by the following method:

[0043] 1) Take pure molybdenum powder, after high-energy ball milling for 24 hours, add water and polyethylene glycol to mix to make a slurry; wherein, the quality of polyethylene glycol added is 5% of the mass of molybdenum powder;

[0044] 2) Coat the slurry obtained in step 1) on the surface of zirconia ceramics, dry at 70°C, place in a sintering furnace, and sinter at 2000°C for 3 hours under a hydrogen atmosphere to form a molybdenum metal layer with a thickness of 40 μm on the ceramic surface. get sintered body;

[0045] 3) Using the lost foam casting method, the sintered body obtained in step 2) is placed in a mold, and after being fixed, the martensitic low-alloy steel molten steel with a pouring temperature of 1600° C. is cast, and the product is obtained.

[0046] The oxide ceramics reinforced steel matrix composite material obtained in this embo...

Embodiment 3

[0048] The oxide ceramic reinforced steel matrix composite material of this embodiment is made by the following method:

[0049] 1) Take molybdenum alloy powder, add water and methyl cellulose and ball mill for 18 hours to make a slurry; wherein, the molybdenum alloy powder is composed of the following components by mass percentage: Ti 5%, Mo 95%; methyl fiber The added quality of element is 6% of molybdenum alloy powder quality;

[0050] 2) Coat the slurry obtained in step 1) on the surface of ZTA ceramics (zirconia toughened alumina ceramics), dry at 65°C, place in a sintering furnace, and sinter at 1850°C for 1 hour in a hydrogen atmosphere to form on the ceramic surface a molybdenum metal layer with a thickness of 60 μm to obtain a sintered body;

[0051] 3) Using the sand casting method, placing the sintered body obtained in step 2) in a mold, and after fixing it, pouring high manganese steel molten steel with a temperature of 1550° C., and casting it to obtain the finis...

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Abstract

The invention discloses an oxide ceramic reinforced steel / iron-based composite and a preparation method thereof. The composite is prepared by using the method comprising the following steps of (1) mixing molybdenum powder or molybdenum alloy powder, water and a binder to prepare slurry; (2) coating the obtained slurry on the surface of oxide ceramic or a ceramic biscuit, drying, and sintering under the condition of 1650-2000 DEG C to obtain a sintered body; and (3) placing the obtained sintered body into a casting mould, pouring molten steel / iron with the temperature of 1400-1600 DEG C, and casting and molding. The obtained oxide ceramic reinforced steel / iron-based composite forms a three-layer structure including ceramic, a molybdenum metal transition layer and steel / iron, the integrated molybdenum metal transition layer is arranged between ceramic-steel / iron composites, interfaces are metallurgically bonded, the bonding force is strong, and the molybdenum metal transition layer forms a buffering layer between the ceramic and steel / iron, so that the obtained composite has excellent mechanical properties and particularly has relatively high shock resistance.

Description

technical field [0001] The invention belongs to the technical field of ceramic-reinforced metal-based composite materials, and specifically relates to an oxide-ceramic-reinforced iron-based composite material, and also relates to a preparation method of an oxide-ceramic-reinforced iron-based composite material. Background technique [0002] Wear-resistant materials are bulk consumables in metallurgy, mining, thermal power, machinery, cement, coal and other industries. According to incomplete statistics, my country consumes more than 5 million tons of wear-resistant materials every year, resulting in a large amount of energy consumption and waste of resources. With the progress of society and the development of industry, it is difficult for a single wear-resistant material to meet the actual needs; in the past ten years, people have focused on the development of composite materials, which has greatly improved the utilization rate of materials. [0003] Oxide ceramics have the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/00
CPCB22D19/0081
Inventor 周玉成王利敏
Owner 周玉成