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Ternary boride Mo2NiB2 alloy powder for 3D printing and production process of ternary boride Mo2NiB2 alloy powder for 3D printing
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A ternary boride, 3D printing technology, applied in the field of 3D printing materials, can solve the problems of clogging, powder particle size distribution, powder shape that cannot reach 3D printing powder, and low powder yield.
Active Publication Date: 2020-12-22
广东博杰特新材料科技有限公司
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Publication number "CN106868377A", the invention patent titled "High-strength molybdenum-nickel-boron ternary boride material and its preparation method" discloses a ternary boride Mo 2 NiB 2 The preparation of vacuum melting gas atomized powder, but its powder particle size distribution, powder shape and other properties can not meet the relevant technical requirements of 3D printing powder, especially because the ternary boride Mo 2 NiB 2 The smelting temperature is 150-300°C higher than that of nickel-based and cobalt-based alloys. Dry pots such as alumina and magnesia are very likely to cause alloy pollution. Due to the ternary boride Mo 2 NiB 2 The proportion of hard phase is relatively high, and the smelting liquid is relatively viscous, resulting in frequent plugging of nozzles during atomization, resulting in very low powder output rate, and it is difficult to form low-cost large-scale production
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Embodiment 1
[0032] Example 1: A 3D printing ternary boride Mo provided in this example 2 NiB 2 Alloy powder and its production process, see figure 1 , the process steps are as follows:
[0033] (1) Ingredients: wet ball milling has more obvious advantages in terms of particle size distribution, anti-oxidation of powder, segregation and agglomeration of powder for preparing powder, so wet ball milling process is preferably used in this embodiment. Prepare the materials and their mass percentages as follows: B 3.3%, Mo 50%, Cr 10%, C 2%, V 0.5%, Nb 2%, W 0.5%, Ce 2%, Mn 4%, Ta0.3%, Ti 0.6%, binder 3%, Ni23%;
[0034] (2) Rod making: mix raw materials B, Mo, Cr, C, V, Nb, W, Ce, Mn, Ta, Ti, Ni and binder according to the formula. The binder is preferably paraffin. In other embodiments, the binder can be selected from PEG, rubber or resin, etc.; mixed with any one or more solvents such as absolute ethanol or methanol, acetone, n-heptane, n-hexane, etc. The azeotropic solvent is used as t...
Embodiment 2
[0041] Embodiment 2: A kind of 3D printing ternary boride Mo provided by this embodiment 2 NiB 2 Alloy powder and its production process are basically the same as in Example 1, except that the elements and their mass percentages are as follows: B 7%, Mo 25%, Cr 15%, C 1%, V 5%, Nb 3%, W 4%, Ce 0.5%, Mn 1%, Ta 1%, Ti 2%, binder 6%, Ni 29.5%.
Embodiment 3
[0042] Embodiment 3: A kind of 3D printing ternary boride Mo provided by this embodiment 2 NiB 2 Alloy powder and its production process are basically the same as in Example 1, except that the elements and their mass percentages are as follows: B 5%, Mo 30%, Cr 4%, C 0.5%, V 3%, Nb 1.5% , W 6%, Ce 0.6%, Mn 3%, Ta 0.7%, Ti 0.7%, binder 4%, Ni41%.
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Abstract
The invention discloses ternary boride Mo2NiB2 alloypowder for 3D printing and a production process of the ternary boride Mo2NiB2 alloypowder for the 3D printing. The ternary boride Mo2NiB2 alloypowder comprises the following elements of, in percentage by weight, 3.3%-7% of B, 25%-70% of Mo, 3%-15% of Cr, 0.2%-2% of C, 0.5%-5% of V, 1%-3% of Nb, 0.5%-8% of W, 0.1%-0.8% of Ce, 1%-5% of Mn, 0.1%-1% of Ta, 0.1%-1% of Ti, and the balance Ni. Ternary boride Mo2NiB2 alloy coating products and 3D printing parts with complex structures prepared from the 3D printing ternary boride alloy powder provided by the invention has the advantages of high melting point, high hardness, high wear resistance and high corrosion resistance, self-lubricating substances such as molybdenum dioxide can be generated during friction, the friction coefficient is small, the wear resistance of a material can be greatly improved, the service life is long, the application prospect is wide, and the alloy powder and the process can be applied to various wear-resistant and corrosion-resistant professional fields.
Description
technical field [0001] The invention belongs to the technical field of 3D printing materials, in particular to a 3D printing ternary boride Mo 2 NiB 2 Alloy powder and its production process. Background technique [0002] 3D printing technology is an advanced additive manufacturing method, which has been widely used in aerospace, biomedical, automotive, military and other fields. Metal powder is the key raw material of metal 3D printing technology, and the quality of alloy metal powder largely determines the final molding effect of the product. The ternary boride alloy material Mo 2 NiB 2 As a 3D printing material, it is still a blank in the field of 3D printing. Ternary boride alloy material Mo 2 NiB 2 It is a cemented carbide material with high melting point, high hardness, high wear resistance and high corrosion resistance. Its density is 3 / 5 of that of traditional cemented carbide, and its thermal expansion coefficient is similar to that of steel. It is very suita...
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