Ta-Nb-based pentabasic high-temperature amorphous alloy with high frictional wear performance and preparation method of Ta-Nb-based pentabasic high-temperature amorphous alloy

Abstract

The invention discloses a Ta-Nb-based pentabasic high-temperature amorphous alloy with high frictional wear performance and a preparation method thereof, and belongs to the technical field of amorphous alloys. The Ta-Nb-based five-element high-temperature amorphous alloy is NbyTa < 42-y > Co < 18 > Ni < 40-x > B < x > or TayNb42-y > Co < 18 > Ni < 40-x > B < x >, x is equal to 1 or 2, and y is equal to 5, 10, 15, 20 or 21. The high-temperature amorphous alloy is prepared by adopting a melt-spinning method, the glass transition temperature of the five-element high-temperature amorphous alloy of NbyTa < 4-y > Co < 18 > Ni < 40-x > B < x > is 950-1000K, and the glass transition temperature of the five-element high-temperature amorphous alloy of TayNb4 < 2-y > Co < 18 > Ni < 40-x > B < x > is 900-950K. A copper mold suction casting method is adopted, and the high-temperature amorphous alloy bars with the diameter ranging from 1.5 mm to 1.5 mm of Nb < 15 > Ta < 27 > Co < 18 > Ni < 38 > B < 2 > to 1.5 mm of Nb < 20 > Ta < 22 > Co < 18 > Ni < 38 > B < 2 > to 2 mm of Nb < 21 > Ta < 21 > Co < 18 > Ni < 38 > B < 2 > to 2 mm of The prepared quinary amorphous alloy with high hardness and excellent friction performance is suitable for a high-temperature environment, and the application field of the amorphous alloy is effectively expanded.

Description

Technical Field

[0001] The invention relates to the technical field of amorphous alloys, and in particular to a Ta-Nb-based five-element high-temperature amorphous alloy with high friction and wear performance and a preparation method thereof. Background Art

[0002] Amorphous alloys have high strength, high hardness and high plasticity due to their unique amorphous structure. However, the amorphous structure is a metastable structure. When heated above the glass transition temperature, the amorphous state transforms into a crystalline state, and its excellent mechanical properties no longer exist. Therefore, the service temperature of amorphous alloys must be lower than the glass transition temperature. The glass transition temperature of amorphous alloys reported so far is usually below 873K, which greatly limits the application field of amorphous alloys. The development of high-temperature amorphous systems with higher glass transition temperatures has become a hot spot and difficulty in the current research field of amorphous alloys. Researching and exploring new high-temperature amorphous systems can effectively broaden the application field of high-temperature amorphous alloys. Summary of the invention

[0003] The purpose of the present invention is to provide a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance and a preparation method thereof, so as to solve the problems in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance, wherein the Ta-Nb based five-element high temperature amorphous alloy is Nb y Ta 42-y Co 18 Ni 40-x B x Five element high temperature amorphous alloy or Ta y Nb 42- y Co 18 Ni 40-x B x A quinary high temperature amorphous alloy, wherein x=1 or 2, and y=5, 10, 15, 20 or 21.

[0005] Preferably, the Nb y Ta 42-y Co 18 Ni 40-x B x The glass transition temperature of the five-element high-temperature amorphous alloy is 950-1000K. y Nb 42-y Co 18 Ni 40-x B x The glass transition temperature of the quinary high temperature amorphous alloy is 900-950K.

[0006] Preferably, the Ta—Nb-based quinary high-temperature amorphous alloy has a nanoindentation hardness of 11-13 GPa and a friction coefficient of 0.10-0.70.

[0007] The present invention also provides a method for preparing the above-mentioned Ta-Nb-based five-element high-temperature amorphous alloy with high friction and wear performance, which specifically comprises the following steps:

[0008] (1) According to Nb y Ta 42-y Co 18 Ni 40-x B x Five-element high temperature amorphous alloy or Ta y Nb 42-y Co 18 Ni 40-x B x The ingredients are prepared according to the proportions in the five-element high-temperature amorphous alloy to obtain a Ta-Nb-Co-Ni-B five-element amorphous alloy raw material;

[0009] (2) In a WK type non-consumable vacuum arc furnace, the Ta-Nb-Co-Ni-B quinary amorphous alloy raw material is repeatedly smelted 4-8 times to obtain a master alloy with uniform composition;

[0010] (3) The master alloy is prepared into Ta-Nb based five-element high temperature amorphous alloy strips or Ta-Nb based five-element high temperature amorphous alloy rods.

[0011] Preferably, in step (1), Nb y Ta 42-y Co 18 Ni 40-x B x The five-element high-temperature amorphous alloy is a ternary high-temperature amorphous alloy Ta 42 Co 18 Ni 40 In the process, 1at.% and 2at.% B are selected to replace Ni, and Nb element is used to replace Ta element;

[0012] The y Nb 42-y Co 18 Ni 40-x B x The five-element high-temperature amorphous alloy is a ternary high-temperature amorphous alloy Nb 42 Co 18 Ni 40 In the embodiment, 1at.% and 2at.% B are selected to replace Ni, and Ta element is used to replace Nb element.

[0013] Preferably, in step (2), before smelting the Ta-Nb-Co-Ni-B quinary amorphous alloy raw material, a WK type non-consumable vacuum arc furnace is evacuated until the vacuum reaches 5×10 -3 -8×10 -3 Pa, high-purity argon is filled until the pressure in the furnace chamber of the WK type non-consumable vacuum arc furnace reaches 0.2×10 5 Pa.

[0014] Preferably, the steps for preparing the Ta-Nb based five-element high temperature amorphous alloy strip are as follows: in a WK-II type vacuum strip spinning machine, when the vacuum degree in the strip spinning machine reaches 5×10 -3 -8×10 -3 When the pressure is 0.04 Pa, the cavity is closed, and high-purity argon gas is filled into the furnace cavity of the vacuum belt spinning machine and the blowing pipe of the vacuum belt spinning machine respectively to establish a pressure difference; the master alloy is heated to a molten state by electromagnetic induction, and the molten master alloy with uniform composition is sprayed onto the surface of a high-speed rotating copper roller for rapid cooling to obtain a Ta-Nb-based five-element high-temperature amorphous alloy strip.

[0015] Preferably, the linear speed of the copper roller surface rotation is 10-50 m / s.

[0016] Preferably, the Nb y Ta 42-y Co 18 Ni 40-x B x During the preparation of the five-element high-temperature amorphous alloy, when y=15, 20 or 21 and x=2, the amorphous forming ability is the best, and the Ta-Nb-based five-element high-temperature amorphous alloy rod is prepared.

[0017] Preferably, the preparation steps of the Ta-Nb-based five-element high-temperature amorphous alloy rod are as follows: in a WK-type non-consumable vacuum arc furnace, the master alloy ingot is placed in a suction casting crucible, heated to a molten state, and then quickly sucked into a copper mold, and quickly cooled to room temperature to obtain a Ta-Nb-based five-element high-temperature amorphous alloy rod, wherein the diameter of the copper mold is Ф1.5mm or Ф2mm.

[0018] Therefore, the present invention adopts the above-mentioned Ta-Nb-based five-element high-temperature amorphous alloy with high friction and wear performance and the preparation method, which has the following beneficial effects:

[0019] 1. According to the ratio of the Ta-Nb-Co-Ni-B five-element amorphous alloy of the present invention, Ta-Nb-based five-element amorphous alloy strips and blocks can be prepared;

[0020] 2. The Ta-Nb-Co-Ni-B quinary amorphous alloy strip of the present invention has a glass transition temperature of 900-1000K, and thus can be used in a higher temperature environment;

[0021] 3. The Ta-Nb-Co-Ni-B quinary amorphous alloy block of the present invention also has relatively high hardness and excellent friction properties, and can effectively expand the application field of high-temperature amorphous alloys.

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The Nb prepared at different copper roller line speeds in Example 1 of the present invention is y Ta 42-y Co 18 Ni 40-x B x X-ray diffraction patterns of five-element high-temperature amorphous alloy strips, where (a) is the Nb prepared when the copper roller linear speed is 10m / s. y Ta 42- y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0024] (b) is the Nb prepared when the copper roller linear speed is 20m / s y Ta 42-y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0025] (c) is the Nb prepared when the copper roller linear speed is 40m / s y Ta 42-y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0026] (d) is the Nb prepared when the copper roller linear speed is 10m / s y Ta 42-y Co 18 Ni 38 B 2 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0027] (e) is the Nb prepared when the copper roller linear speed is 20m / s. y Ta 42-y Co 18 Ni 38 B2 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0028] (f) is the Nb prepared when the copper roller linear speed is 40m / s. y Ta 42-y Co 18 Ni 38 B 2 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0029] Figure 2 The Nb prepared in Example 1 of the present invention when the copper roller linear speed is 40 m / s y Ta 42-y Co 18 Ni 40-x B x Differential scanning calorimetry analysis curve of five-element high-temperature amorphous alloy strips; where (a) is the prepared Nb y Ta 42-y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) differential scanning calorimetry analysis curves of five-element high temperature amorphous alloy strips; (b) Nb y Ta 42-y Co 18 Ni 38 B 2 (y=5, 10, 15, 20) differential scanning calorimetry analysis curves of five-element high temperature amorphous alloy strips;

[0030] Figure 3 The Ta prepared under different copper roller line speeds in Example 2 of the present invention is y Nb 42-y Co 18 Ni 40-x B x X-ray diffraction patterns of five-element high-temperature amorphous alloy strips; (a) is the Ta prepared when the copper roller linear speed is 10m / s y Nb 42- y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0031] (b) is the Ta prepared when the copper roller linear speed is 20m / s y Nb 42-y Co 18 Ni 39 B1 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0032] (c) is the Ta prepared when the copper roller linear speed is 40m / s y Nb 42-y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0033] (d) is the Ta prepared when the copper roller linear speed is 10m / s y Nb 42-y Co 18 Ni 38 B 2 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0034] (e) is the Ta prepared when the copper roller linear speed is 20m / s y Nb 42-y Co 18 Ni 38 B 2 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0035] (f) is the Ta prepared when the copper roller linear speed is 40m / s y Nb 42-y Co 18 Ni 38 B 2 (y=5, 10, 15, 20) X-ray diffraction patterns of five-element high-temperature amorphous alloy strips;

[0036] Figure 4 The Ta prepared in Example 2 of the present invention when the copper roller linear speed is 40 m / s y Nb 42-y Co 18 Ni 40-x B x Differential scanning calorimetry analysis curve of five-element high-temperature amorphous alloy strip; where (a) is Ta y Nb 42-y Co 18 Ni 39 B 1 (y=5, 10, 15, 20) differential scanning calorimetry analysis curves of five-element high temperature amorphous alloy strips; (b) Ta y Nb 42-y Co 18 Ni 38 B2 (y=5, 10, 15, 20) differential scanning calorimetry analysis curves of five-element high temperature amorphous alloy strips;

[0037] Figure 5 are X-ray diffraction patterns of three quinary bulk amorphous alloy rods prepared in Example 3 of the present invention;

[0038] Figure 6 The friction coefficient curves of three quinary bulk amorphous alloy rods prepared in Example 3 of the present invention, wherein (a) is Nb 15 Ta 27 Co 18 Ni 38 B 2 Friction coefficient curve of five-element bulk amorphous alloy rod; (b) Nb 20 Ta 22 Co 18 Ni 38 B 2 Friction coefficient curve of five-element bulk amorphous alloy rod; (c) Nb 21 Ta 21 Co 18 Ni 38 B 2 Friction coefficient curve of quinary bulk amorphous alloy rod. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0040] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0041] In addition, it should be understood that although this specification is described according to the implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. These other implementation modes are also covered within the protection scope of the present invention.

[0042] Embodiment 1:

[0043] In this example, Nb y Ta 42-y Co 18 Ni 40-x B x Five-element high-temperature amorphous alloy strip, wherein x=1, 2, y=5, 10, 15, 20, specifically including

[0044] Nb 5 Ta 37 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Nb 10 Ta 32 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Nb 15 Ta 27 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Nb 20 Ta 22 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Nb 5 Ta 37 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip, Nb 10 Ta 32 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip, Nb 15 Ta 27 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip, Nb 20 Ta 22 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip.

[0045] The following steps are involved:

[0046] (1) Use Ta, Nb, Co, Ni, and B single-element raw materials with a purity of more than 99.95%. y Ta 42-y Co 18 Ni 40-x B x The smelting equipment used is Beijing Wuke Optoelectronics WK type non-consumable vacuum arc furnace. The prepared single raw materials are placed in the smelting crucible. Before smelting the alloy, the equipment is evacuated until the vacuum reaches 6×10 -3 Pa, high-purity argon gas is filled into the arc furnace until the pressure in the furnace chamber reaches 0.2×105 Pa, the raw materials are melted in sequence under argon protection, and each sample is melted 4-8 times to ensure that a master alloy ingot with uniform composition can be obtained.

[0047] (2) The belt-spinning equipment used is the WK-IIB vacuum belt-spinning machine. When the vacuum degree in the belt-spinning machine reaches 6×10 -3 Pa, the cavity is closed. High-purity argon is filled into the furnace cavity and the blowing pipe to establish a pressure difference. The copper roller speed and the power required for melting the alloy are set, the power is turned on, and the copper roller is started. The alloy sample is heated to a molten state by electromagnetic induction, and the pressure difference is used to spray the molten liquid in a thin liquid column onto the surface of the rapidly rotating copper roller to achieve a rapid cooling effect, and Nb y Ta 42-y Co 18 Ni 40- x B x (x=1, 2, y=5, 10, 15, 20) five-element high-temperature amorphous alloy strips, wherein the linear speeds of the copper roller surface rotation are 10m / s, 20m / s and 40m / s respectively.

[0048] The X-ray diffractometer was used to detect the Nb prepared at different line speeds. y Ta 42-y Co 18 Ni 40-x B x The structure of the five-element high-temperature amorphous alloy strip (x=1, 2, y=5, 10, 15, 20) was analyzed using a Japanese Rigaku D / max-2500PC X-ray diffractometer, using a Cu-Kα target, a test range (2θ) of 10° to 90°, a scanning speed of 4° / min, a current of 200mA, and a voltage of 40kV. The test results are shown in Figure 1 As shown in the figure, the XRD patterns of the eight five-element high-temperature amorphous alloy strips do not have sharp diffraction peaks corresponding to crystalline materials, but only show the typical characteristic bun peaks of amorphous materials, indicating that the prepared Nb y Ta 42- y Co 18 Ni 40-x B x (x=1, 2, y=5, 10, 15, 20) The five-element high-temperature amorphous alloy strip samples have a completely amorphous structure.

[0049] The Nb prepared at a copper roller speed of 40 m / s was analyzed using a NETZSCH DSC404F3 differential scanning calorimeter. y Ta 42- y Co 18 Ni 40-x B xGlass transition temperature T of five-element high temperature amorphous alloy strips (x=1, 2, y=5, 10, 15, 20) g , Crystallization start temperature T x The test results are as follows: Figure 2 As shown, the DSC test results show that the Nb y Ta 42-y Co 18 Ni 40-x B x (x=1, 2, y=5, 10, 15, 20) The quinary high temperature amorphous alloy strips have a higher glass transition temperature.

[0050] Example 2

[0051] This embodiment prepares Ta y Nb 42-y Co 18 Ni 40-x B x , where x=1, 2, y=5, 10, 15, 20) five-element high temperature amorphous alloy strip, specifically including Ta 5 Nb 37 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Ta 10 Nb 32 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Ta 15 Nb 27 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Ta 20 Nb 22 Co 18 Ni 39 B 1 Five-element high-temperature amorphous alloy strip, Ta 5 Nb 37 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip, Ta 10 Nb 32 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip, Ta 15 Nb 27 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip, Ta20 Nb 22 Co 18 Ni 38 B 2 Five-element high-temperature amorphous alloy strip. It includes the following steps:

[0052] (1) Use Ta, Nb, Co, Ni, and B single-element raw materials with a purity of more than 99.95%. y Nb 42-y Co 18 Ni 40-x B x The smelting equipment used is Beijing Wuke Optoelectronics WK type non-consumable vacuum arc furnace. The prepared single raw materials are placed in the smelting crucible. Before smelting the alloy, the equipment is evacuated until the vacuum reaches 6×10 -3 Pa, high-purity argon gas is filled into the arc furnace until the pressure in the furnace chamber reaches 0.2×10 5 Pa, the raw materials are melted in sequence under argon protection, and each sample is melted 4-8 times to ensure that a master alloy ingot with uniform composition can be obtained.

[0053] (2) The belt-spinning equipment used is the WK-IIB vacuum belt-spinning machine. When the vacuum degree in the belt-spinning machine reaches 6×10 -3 When the pressure is 0.0457 W / m, the cavity is closed. High-purity argon is filled into the furnace cavity and the blowing pipe to establish a pressure difference. The copper roller speed and the power required for melting the alloy are set, the power is turned on, and the copper roller is started. The alloy sample is heated to a molten state by electromagnetic induction, and the pressure difference is used to spray the molten liquid in a thin liquid column onto the surface of the rapidly rotating copper roller to achieve a rapid cooling effect, and a five-element high-temperature amorphous alloy strip is obtained, where the linear speeds of the copper roller surface rotation are 10 m / s, 20 m / s, and 40 m / s, respectively.

[0054] The Ta prepared at different line speeds was detected by X-ray diffractometer. y Nb 42-y Co 18 Ni 40-x B x The structure of the five-element high-temperature amorphous alloy strip (x=1, 2, y=5, 10, 15, 20) was analyzed using a Japanese Rigaku D / max-2500PC X-ray diffractometer, using a Cu-Kα target, a test range (2θ) of 10° to 90°, a scanning speed of 4° / min, a current of 200mA, and a voltage of 40kV; the test results are shown in Figure 3 As shown in the figure, the XRD patterns of the eight five-element high-temperature amorphous alloy strips show no crystallization peaks, but only the typical characteristic peaks of amorphous state, indicating that the prepared Ta y Nb 42-y Co18 Ni 40-x B x (x=1, 2, y=5, 10, 15, 20) Five-element high-temperature amorphous alloy strip samples are completely amorphous structures;

[0055] The Ta prepared at a copper roller speed of 40 m / s was analyzed using a NETZSCH DSC404F3 differential scanning calorimeter. y Nb 42- y Co 18 Ni 40-x B x Glass transition temperature T of five-element high temperature amorphous alloy strips (x=1, 2, y=5, 10, 15, 20) g , Crystallization start temperature T x The test results are as follows: Figure 4 As shown, the test results show that the Ta y Nb 42-y Co 18 Ni 40-x B x (x=1, 2, y=5, 10, 15, 20) The quinary high temperature amorphous alloy strips have a higher glass transition temperature.

[0056] Example 3

[0057] In this example, Nb 15 Ta 27 Co 18 Ni 38 B 2 , Nb 20 Ta 22 Co 18 Ni 38 B 2 and Nb 21 Ta 21 Co 18 Ni 38 B 2 The five-element high-temperature amorphous alloy rod specifically includes the following steps:

[0058] (1) Use Ta, Nb, Co, Ni, and B single-element raw materials with a purity of more than 99.95%, respectively according to Nb 15 Ta 27 Co 18 Ni 38 B 2 , Nb 20 Ta 22 Co 18 Ni 38 B 2 and Nb 21 Ta 21 Co18 Ni 38 B 2 The smelting equipment used is Beijing Wuke Optoelectronics WK type non-consumable vacuum arc furnace. The prepared single raw materials are placed in the smelting crucible. Before smelting the alloy, the equipment is evacuated and the vacuum degree reaches 6×10 -3 Pa, high-purity argon gas is filled into the arc furnace until the pressure in the furnace chamber reaches 0.2×10 5 Pa, the raw materials are melted in sequence under argon protection, and each sample is melted 4-8 times to ensure that the Nb with uniform composition can be obtained. 15 Ta 27 Co 18 Ni 38 B 2 , Nb 20 Ta 22 Co 18 Ni 38 B 2 and Nb 21 Ta 21 Co 18 Ni 38 B 2 Master alloy ingot.

[0059] (2) Place the alloy ingot into a suction casting crucible and evacuate the alloy using the same operating conditions and steps as the master alloy ingot. When the alloy liquid is highly fluid, press the suction casting valve to disconnect the arc and suck the alloy melt into the copper mold to obtain Nb 15 Ta 27 Co 18 Ni 38 B 2 -1.5mm, Nb 20 Ta 22 Co 18 Ni 38 B 2 -1.5mm and Nb 21 Ta 21 Co 18 Ni 38 B 2 -2mm high temperature amorphous alloy rod.

[0060] The prepared Nb 15 Ta 27 Co 18 Ni 38 B 2 , Nb 20 Ta 22 Co 18 Ni 38 B 2 and Nb 21 Ta 21 Co18 Ni 38 B 2 The structure of high-temperature amorphous alloy rods. The analysis was performed using a Japanese Rigaku D / max-2500PC X-ray diffractometer, using a Cu-Kα target, a scanning speed of 4° / min, a current of 200mA, a voltage of 40kV, and a test range (2θ) of 10° to 90°; the test results are shown in the figure. Figure 5 As shown in the figure, the XRD patterns of the three five-element high-temperature amorphous alloy rods show no crystallization peaks, but only the typical characteristic peaks of amorphous state, which indicates that the prepared Nb 15 Ta 27 Co 18 Ni 38 B 2 -1.5mm, Nb 20 Ta 22 Co 18 Ni 38 B 2 -1.5mm and Nb 21 Ta 21 Co 18 Ni 38 B 2 -2mm five-element high-temperature amorphous alloy rod samples are all completely amorphous structures;

[0061] The prepared Nb 15 Ta 27 Co 18 Ni 38 B 2 , Nb 20 Ta 22 Co 18 Ni 38 B 2 and Nb 21 Ta 21 Co 18 Ni 38 B 2 The hardness of the five-element high-temperature amorphous alloy rods was tested; the results are shown in Table 1, and the three five-element high-temperature amorphous alloy rod samples all have high hardness;

[0062] Table 1

[0063]

[0064] The prepared Nb 15 Ta 27 Co 18 Ni 38B 2 , Nb 20 Ta 22 Co 18 Ni 38 B 2 and Nb 21 Ta 21 Co 18 Ni 38 B 2 The friction and wear properties of the five-element high-temperature amorphous alloy rods were tested, and the results are as follows Figure 6 The friction coefficient curves of the three amorphous alloy rods show that the prepared Nb 15 Ta 27 Co 18 Ni 38 B 2 -1.5mm, Nb 20 Ta 22 Co 18 Ni 38 B 2 -1.5mm and Nb 21 Ta 21 Co 18 Ni 38 B 2 -2mm five-element high-temperature amorphous alloy rod sample has excellent friction properties.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance, characterized in that: The Ta-Nb based five-element high temperature amorphous alloy is Nb y Ta 42-y Co 18 Ni 40-x B x Five element high temperature amorphous alloy or Ta y Nb 42-y Co 18 Ni 40-x B x A quinary high temperature amorphous alloy, wherein x=1 or 2, and y=5, 10, 15, 20 or 21.

2. The Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 1, characterized in that: The Nb y Ta 42-y Co 18 Ni 40-x B x The glass transition temperature of the five-element high-temperature amorphous alloy is 950-1000K. y Nb 42-y Co 18 Ni 40-x B x The glass transition temperature of the quinary high temperature amorphous alloy is 900-950K.

3. The Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 1, characterized in that: The Ta-Nb-based quinary high-temperature amorphous alloy has a nanoindentation hardness of 11-13 GPa and a friction coefficient of 0.10-0.

70.

4. A method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance as claimed in any one of claims 1 to 3, characterized in that: The specific steps include: (1) According to Nb y Ta 42-y Co 18 Ni 40-x B x Five element high temperature amorphous alloy or Ta y Nb 42-y Co 18 Ni 40-x B x The ingredients are prepared according to the proportions in the five-element high-temperature amorphous alloy to obtain a Ta-Nb-Co-Ni-B five-element amorphous alloy raw material; (2) In a WK type non-consumable vacuum arc furnace, the Ta-Nb-Co-Ni-B quinary amorphous alloy raw material is repeatedly smelted 4-8 times to obtain a master alloy with uniform composition; (3) The master alloy is prepared into Ta-Nb based five-element high temperature amorphous alloy strips or Ta-Nb based five-element high temperature amorphous alloy rods.

5. The method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 4, characterized in that: In step (1), Nb y Ta 42-y Co 18 Ni 40-x B x The five-element high-temperature amorphous alloy is a ternary high-temperature amorphous alloy Ta 42 Co 18 Ni 40 In the process, 1at.% and 2at.% B are selected to replace Ni, and Nb element is used to replace Ta element; Said y Nb 42-y Co 18 Ni 40-x B x The five-element high-temperature amorphous alloy is a ternary high-temperature amorphous alloy Nb 42 Co 18 Ni 40 In the embodiment, 1at.% and 2at.% B are selected to replace Ni, and Ta element is used to replace Nb element.

6. The method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 4, characterized in that: In step (2), before melting the Ta-Nb-Co-Ni-B quinary amorphous alloy raw materials, the WK type non-consumable vacuum arc furnace equipment is evacuated until the vacuum degree reaches 5×10 -3 -8×10 -3 Pa, high-purity argon is filled until the pressure in the furnace chamber of the WK type non-consumable vacuum arc furnace reaches 0.2×10 5 Pa.

7. The method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 4, characterized in that: The steps for preparing the Ta-Nb based five-element high temperature amorphous alloy strip are as follows: in a WK-II type vacuum strip spinning machine, when the vacuum degree in the strip spinning machine reaches 5×10 -3 -8×10 -3 When the pressure is 0.04 Pa, the cavity is closed, and high-purity argon gas is filled into the furnace cavity of the vacuum belt spinning machine and the blowing pipe of the vacuum belt spinning machine respectively to establish a pressure difference; the master alloy is heated to a molten state by electromagnetic induction, and the molten master alloy with uniform composition is sprayed onto the surface of a high-speed rotating copper roller for rapid cooling to obtain a Ta-Nb-based five-element high-temperature amorphous alloy strip.

8. The method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 7, characterized in that: The linear speed of the copper roller surface rotation is 10-50 m / s.

9. The method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 4, characterized in that: The Nb y Ta 42-y Co 18 Ni 40-x B x During the preparation of the five-element high-temperature amorphous alloy, when y=15, 20 or 21 and x=2, the amorphous forming ability is the best, and the Ta-Nb-based five-element high-temperature amorphous alloy rod is prepared.

10. The method for preparing a Ta-Nb based five-element high temperature amorphous alloy with high friction and wear performance according to claim 9, characterized in that: The preparation steps of Ta-Nb based five-element high-temperature amorphous alloy rod are as follows: in a WK type non-consumable vacuum arc furnace, a mother alloy ingot is placed in a suction casting crucible, heated to a molten state, and then quickly sucked into a copper mold, and quickly cooled to room temperature to obtain a Ta-Nb based five-element high-temperature amorphous alloy rod, wherein the diameter of the copper mold is Ф1.5mm or Ф2mm.

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