Multilayer nanocrystalline composite structure NiCrAlBNb-based bearing retainer material and preparation method thereof
A nanocrystalline composite and base bearing technology, applied in the field of cages and bearings, can solve problems such as fracture, bearing cage burns, etc., achieve high operation accuracy, long service life, and improve the compatibility and combination of each layer.
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Embodiment 1
[0034] Such as figure 1 As shown, a multilayer nanocrystalline structure NiCrAlBNb-based bearing cage self-lubricating composite design and preparation method of the main process has the following steps:
[0035] 1) Weigh ammonium molybdate, silicon powder and cadmium powder at a molar ratio of 3:2:1, grind and mix the ammonium molybdate powder, silicon powder and cadmium powder, etc., to obtain a plate that is evenly mixed and the average particle size of the mixture is 40 μm The original ingredients of crystals; then sintered in a vacuum atmosphere furnace, the sintering temperature is 400°C, the holding time is 5.5h, the protective gas is argon, and the amount of oxygen introduced during the sintering process is 75ml / min, and a multi-layer plate-like crystal is obtained. MoSiCrO. figure 2 It is the electron microscope picture of the multilayer plate crystal MoSiCrO powder prepared by embodiment 1;
[0036] 2) Calculate the ingredients of the multilayer plate-like crystal...
Embodiment 2
[0047] Such as figure 1 As shown, a multilayer nanocrystalline structure NiCrAlBNb-based bearing cage self-lubricating composite design and preparation method of the main process has the following steps:
[0048] 1) Weigh ammonium molybdate, silicon powder and cadmium powder at a molar ratio of 4:3:2, grind and mix the ammonium molybdate powder, silicon powder and cadmium powder, etc., to obtain a plate that is evenly mixed and the average particle size of the mixture is 45 μm The original ingredients of crystals; then sintered in a vacuum atmosphere furnace, the sintering temperature is 470°C, the holding time is 6.5h, the protective gas is argon, and the amount of oxygen introduced during the sintering process is 125ml / min, and a multi-layer plate-shaped crystal is obtained. MoSiCrO;
[0049] 2) Calculate the ingredients of the multilayer plate-like crystal MoSiCrO obtained in step 1) with ceramic fiber, carbon fiber, glass fiber, nano-white corundum, titanium carbide, tant...
Embodiment 3
[0060] Such as figure 1 As shown, a multilayer nanocrystalline structure NiCrAlBNb-based bearing cage self-lubricating composite design and preparation method of the main process has the following steps:
[0061] 1) Weigh ammonium molybdate, silicon powder and cadmium powder at a molar ratio of 4:3:1, and grind and mix the ammonium molybdate powder, silicon powder and cadmium powder to obtain a uniform mixture with an average particle size of 42.5 μm The original ingredients of plate-shaped crystals; then sintered in a vacuum atmosphere furnace, the sintering temperature is 450°C, the holding time is 6.1h, the protective gas is argon, and the amount of oxygen introduced during the sintering process is 100ml / min to obtain a multi-layer plate crystal Crystalline MoSiCrO;
[0062] 2) Calculate the ingredients of the multilayer plate-like crystal MoSiCrO obtained in step 1) with ceramic fiber, carbon fiber, glass fiber, nano-white corundum, titanium carbide, tantalum carbide, ful...
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