Multi-layer structure TiNiAlZrNb-based self-lubricating bearing bush material design and preparation method thereof

Abstract

The invention relates to a multi-layer structure TiNiAlZrNb-based self-lubricating bearing bush material design and a preparation method thereof. The main component of the self-lubricating bearing bush is composed of a TiNiAlZrNb substrate, a soft metal SnCuZnAg and a multi-element composite regulating agent, the machining process of a TiNiAlZrNb-based self-lubricating bearing bush is prepared bya multi-element plate-shaped crystal, and each layer of material is subjected to design calculation and vibration mixing and hot press molding and sample machining and is compounded with a multilayerstructure. Compared with uniformly distributed block body bearing bush materials, and the TiNiAlZrNb-based multi-layer structure composite materials greatly save the material usage amount on the premise of meeting the performance requirements of the bearing bush materials; meanwhile, the multi-layer structure composite materials can replace oil and grease under working conditions such as high temperature and high pressure to achieve good lubricating effect, and the multi-layer structure TiNiAlZrNb-based self-lubricating bearing bush materials have the advantages of green environmental protection, high use precision, long service life.

Description

technical field

[0001] The invention relates to the design and preparation method of a multi-layer structure TiNiAlZrNb-based self-lubricating bearing material, which belongs to an innovative research in the technical fields of bearings and bushings, and can replace traditional bearing materials to achieve good lubrication performance in extreme environments such as high temperature and high pressure. .

[0002] technical background

[0003] Currently used as self-lubricating bearing alloy materials have the following seven performance requirements: good fatigue resistance, excellent wear resistance, outstanding seizure resistance, excellent iron pin performance, good compliance, high corrosion resistance and High turn resistance. Babbitt alloys with soft matrix and hard particles and copper-lead alloys with hard matrix and soft particles are usually used as bearing alloy materials [Li Yongwei, Zhang Shaoming, Shi Likai, Application and Research Progress of Al-Pb Bearing All...

Examples

Embodiment 1

[0035] Such as figure 1 As shown, the main process of a multilayer structure TiNiAlZrNb-based self-lubricating bearing material design and its preparation method has the following steps:

[0036] 1) Weigh ammonium molybdate, niobium powder and cadmium powder at a molar ratio of 5:2:1, grind and mix the ammonium molybdate powder, niobium powder and cadmium powder to obtain a mixed powder with an average thickness of 25 μm; then vacuum atmosphere Furnace sintering, the sintering temperature is 650°C, the holding time is 3.5h, the protective gas is argon, and the reaction is enhanced by feeding oxygen during the sintering process. The oxygen feeding rate is 65ml / min, and a multi-layer plate crystal MoNbCrO is obtained. figure 2 It is the electron micrograph of the multilayer plate crystal MoNbCrO powder prepared in embodiment 1.

[0037] 2) Combine step 1) obtained multilayer plate crystal MoNbCrO with nano-alumina, ceramic fiber, graphene, aramid fiber, glass fiber, carbon fib...

Embodiment 2

[0047] Such as figure 1 As shown, a kind of multi-layer structure TiNiAlZrNb base self-lubricating bearing material design and its preparation method in the main process in embodiment 2 have the following several steps:

[0048] 1) Weigh ammonium molybdate, niobium powder and cadmium powder according to a molar ratio of 5:3:2, grind and mix the ammonium molybdate powder, niobium powder and cadmium powder raw material powder, and the average particle size is about 28 μm; then vacuum Sintering in an atmosphere furnace, the sintering temperature is 750°C, the holding time is 4.5h, the protective gas is argon, and the reaction is enhanced by feeding oxygen during the sintering process. The oxygen feeding rate is 175 ml / min, and a multi-layer plate crystal MoNbCrO is obtained.

[0049] 2) Combine step 1) obtained multilayer plate crystal MoNbCrO with nano-alumina, ceramic fiber, graphene, aramid fiber, glass fiber, carbon fiber, nitrile rubber powder, silicone resin, serpentine, no...

Embodiment 3

[0059] Such as figure 1 As shown, a kind of multi-layer structure TiNiAlZrNb base self-lubricating bearing material design and its preparation method in the main process in embodiment 3 have the following several steps:

[0060] 1) Weigh ammonium molybdate, niobium powder and cadmium powder at a molar ratio of 5:3:2, grind and mix the ammonium molybdate powder, niobium powder and cadmium powder powder raw materials to obtain uniformly mixed plate-like crystals with a thickness of 30 μm The original ingredients are then sintered in a vacuum atmosphere furnace, the sintering temperature is 750°C, the holding time is 4.5h, the protective gas is argon, and 175 ml / min oxygen is introduced during the sintering process to obtain a multi-layer plate crystal MoNbCrO.

[0061] 2) Combine step 1) obtained multilayer plate crystal MoNbCrO with nano-alumina, ceramic fiber, graphene, aramid fiber, glass fiber, carbon fiber, nitrile rubber powder, silicone resin, serpentine, nodular cast iro...

technical field

[0001] The invention relates to the design and preparation method of a multi-layer structure TiNiAlZrNb-based self-lubricating bearing material, which belongs to an innovative research in the technical fields of bearings and bushings, and can replace traditional bearing materials to achieve good lubrication performance in extreme environments such as high temperature and high pressure. .

[0002] technical background

[0003] Currently used as self-lubricating bearing alloy materials have the following seven performance requirements: good fatigue resistance, excellent wear resistance, outstanding seizure resistance, excellent iron pin performance, good compliance, high corrosion resistance and High turn resistance. Babbitt alloys with soft matrix and hard particles and copper-lead alloys with hard matrix and soft particles are usually used as bearing alloy materials [Li Yongwei, Zhang Shaoming, Shi Likai, Application and Research Progress of Al-Pb Bearing All...

Examples

Embodiment 1

[0035] Such as figure 1 As shown, the main process of a multilayer structure TiNiAlZrNb-based self-lubricating bearing material design and its preparation method has the following steps:

[0036] 1) Weigh ammonium molybdate, niobium powder and cadmium powder at a molar ratio of 5:2:1, grind and mix the ammonium molybdate powder, niobium powder and cadmium powder to obtain a mixed powder with an average thickness of 25 μm; then vacuum atmosphere Furnace sintering, the sintering temperature is 650°C, the holding time is 3.5h, the protective gas is argon, and the reaction is enhanced by feeding oxygen during the sintering process. The oxygen feeding rate is 65ml / min, and a multi-layer plate crystal MoNbCrO is obtained. figure 2 It is the electron micrograph of the multilayer plate crystal MoNbCrO powder prepared in embodiment 1.

[0037] 2) Combine step 1) obtained multilayer plate crystal MoNbCrO with nano-alumina, ceramic fiber, graphene, aramid fiber, glass fiber, carbon fib...

Embodiment 2

[0047] Such as figure 1 As shown, a kind of multi-layer structure TiNiAlZrNb base self-lubricating bearing material design and its preparation method in the main process in embodiment 2 have the following several steps:

[0048] 1) Weigh ammonium molybdate, niobium powder and cadmium powder according to a molar ratio of 5:3:2, grind and mix the ammonium molybdate powder, niobium powder and cadmium powder raw material powder, and the average particle size is about 28 μm; then vacuum Sintering in an atmosphere furnace, the sintering temperature is 750°C, the holding time is 4.5h, the protective gas is argon, and the reaction is enhanced by feeding oxygen during the sintering process. The oxygen feeding rate is 175 ml / min, and a multi-layer plate crystal MoNbCrO is obtained.

[0049] 2) Combine step 1) obtained multilayer plate crystal MoNbCrO with nano-alumina, ceramic fiber, graphene, aramid fiber, glass fiber, carbon fiber, nitrile rubber powder, silicone resin, serpentine, no...

Embodiment 3

[0059] Such as figure 1 As shown, a kind of multi-layer structure TiNiAlZrNb base self-lubricating bearing material design and its preparation method in the main process in embodiment 3 have the following several steps:

[0060] 1) Weigh ammonium molybdate, niobium powder and cadmium powder at a molar ratio of 5:3:2, grind and mix the ammonium molybdate powder, niobium powder and cadmium powder powder raw materials to obtain uniformly mixed plate-like crystals with a thickness of 30 μm The original ingredients are then sintered in a vacuum atmosphere furnace, the sintering temperature is 750°C, the holding time is 4.5h, the protective gas is argon, and 175 ml / min oxygen is introduced during the sintering process to obtain a multi-layer plate crystal MoNbCrO.

[0061] 2) Combine step 1) obtained multilayer plate crystal MoNbCrO with nano-alumina, ceramic fiber, graphene, aramid fiber, glass fiber, carbon fiber, nitrile rubber powder, silicone resin, serpentine, nodular cast iro...

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