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Wear-resistant and corrosion-resistant ternary boride/stainless steel composite material and manufacturing method thereof
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A technology of ternary boride and composite materials, which is applied in the field of wear-resistant and corrosion-resistant ternary boride/stainless steel composite materials and its preparation, to achieve the effects of promotion and innovation, a wide range of options, and high hardness
Active Publication Date: 2021-08-06
WUHAN UNIV OF SCI & TECH
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[0007]
The purpose of the present invention is to: in order to solve the problem of the bonding strength between ternary boride / stainless steel and the difficulty of post-processing, a kind of wear-resistant and corrosion-resistant ternary boride / stainless steel composite material and its preparation method are proposed. The method can It effectively solves the problem of bonding strength between ternary boride / stainless steel and the difficulty of post-processing, and has the characteristics of high precision and high strength, improves product precision, reduces machining procedures and saves costs, and can realize the surface preparation of various stainless steel substrates. Elemental boride / stainless steel composite
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Embodiment 1
[0039] The invention provides a technical solution: a method for preparing a wear-resistant and corrosion-resistant ternary boride / stainless steel composite material, which specifically includes the following steps: A. 1Cr13 martensitic stainless steel alloy powder prepared by gas atomization is selected as the steel substrate Powder, with an average particle size of 14.8 μm, and its main chemical element percentages are: C: 0.12, Cr: 12, Mn: 0.8, Si: 0.6, Ni: 0.5 and Fe: the balance.
[0040]The average particle size of the ternary boride raw material alloy powder is 21.5 μm, and the percentages of its main chemical elements are: 5-15wt% FeB powder, 5-15wt% Cr powder, 10-20wt% Mo powder, 6-8wt% Ni powder, 0.5~2wt% Cu powder, 1~3wt% NbC powder, 0.5~1.2wt% La 2 o 3 powder and Fe powder balance.
[0041] B. Mixing materials: liquid paraffin is selected as the molding agent, the mass ratio of the stainless steel matrix powder and the molding agent is 48:2, and the mixing time i...
Embodiment 2
[0047] The difference from Example 1 is that the present invention provides a technical solution: a method for preparing a wear-resistant and corrosion-resistant ternary boride / stainless steel composite material, which specifically includes the following steps:
[0048] A. The 304 austenitic stainless steel alloy powder prepared by plasma atomization is used as steel substrate powder, with an average particle size of 12.8 μm, and the percentages of its main chemical elements are: C:0.08, Cr:19.5, Mn:1.9, Si:0.8, Ni : 8.5 and Fe: margin.
[0049] The average particle size of the ternary boride raw material alloy powder is 18.7 μm, and its main chemical element percentage is 10-20wt% FeB powder, 10-20wt% Cr powder, 15-30wt% Mo powder, 7-10wt% Ni powder, 1.5-3.0 wt% Cu powder, 2~5wt% VC powder, 1.0~2.0wt% Y 2 o 3 powder and Fe powder balance.
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Abstract
The invention discloses a wear-resistant and corrosion-resistant ternary boride / stainless steel composite material and a manufacturing method, and belongs to the technical field of composite material manufacturing. The wear-resistant and corrosion-resistant ternary boride / stainless steel composite material comprises stainless steel materialpowder, ternary borideraw materialalloypowder and a small amount of forming agent; and the ternary boride raw materialalloypowder is manufactured from, by mass, 5wt%-20wt% of ferroboron alloy powder, 5wt%-20wt% of chromium powder, 10wt%-30wt% of molybdenum powder, 10wt%-15wt% of nickel powder, 1wt%-5wt% of copper powder, 1wt%-5wt% of transition metalcarbide, 0.5wt%-3wt% of rare earthoxide and the balance of iron powder. According to the wear-resistant and corrosion-resistant ternary boride / stainless steel composite material, the thickness of a ternary boride alloy layer and a stainless steel matrix alloy can be flexibly adjusted; the bonding property after sintering is good; the ternary boride alloy layer has corrosion resistance equivalent to that of the stainless steel matrix; the hardness is high and adjustable; the wear resistance is good; the selectable range of the stainless steel matrix is wide; the manufacturing cost is low; and the operation is simple.
Description
technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a wear-resistant and corrosion-resistant ternary boride / stainless steel composite material and a preparation method. Background technique [0002] Stainless steel alloy has a wide range of sources, low price, and good corrosion resistance and oxidation resistance at room temperature. It has been widely used in many industries such as machinery, petrochemical, construction and metallurgy, but it obviously has low hardness and high temperature. It has disadvantages such as poor thermal stability and poor wear resistance. Because stainless steel alloy materials are difficult to meet the service requirements of industrial production on the wear resistance of parts surface, thus limiting its application in many industries. Therefore, under the premise of effectively ensuring the corrosion resistance of stainless steel, it is very innovative and prac...
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