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US 11,441,609 B2Granted
Bearing material, bearing element and method
AssigneesMahle International GmbH, Mahle Engine Systems UK Ltd
InventorsKayleigh McEwan, Jennifer Harvey
Life of this patent
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Abstract
A bearing material may include a polymeric matrix of polyamide-imide (PAI) polymer material and a plurality of melamine cyanurate particles dispersed within the polymeric matrix.
Claims19
A bearing material, comprising:
- a polymeric matrix of polyamide-imide (PAI) polymer material;
- a plurality of metal flakes composed of aluminum;
- and
- a solid lubricant consisting of melamine cyanurate, the melamine cyanurate comprising a plurality of melamine cyanurate particles dispersed within and distributed evenly throughout the polymeric matrix;
- wherein the plurality of melamine cyanurate particles have an average particle size of 0.5 μm to 3 μm;
- and
- wherein about 8 wt % to about 12 wt % of the bearing material is melamine cyanurate.
4 more elements
A bearing element, comprising:
- a bearing material including a polymeric matrix of polyamide-imide (PAI) polymer material;
- a plurality of melamine cyanurate particles dispersed within and distributed evenly throughout the polymeric matrix such that the bearing material has a uniform composition;
- wherein the plurality of melamine cyanurate particles have an average particle size of 0.5 μm to 3 μm;
- wherein the plurality of melamine cyanurate particles have a bulk density of 0.24 g/ml, a D10 of 0.5 μm, a D50 of 1.3 μm, and a D90 of 4.7 μm;
- and
- wherein about 8 wt % to about 12 wt % of the bearing material is melamine cyanurate.
3 more elements
A method of forming a bearing material, comprising mixing a polyamide-imide (PAI) polymer material with a plurality of particles of melamine cyanurate to define a dispersion, wherein:
- mixing the polyamide-imide (PAI) polymer material with the plurality of particles of melamine cyanurate includes evenly distributing the plurality of particles of melamine cyanurate throughout the dispersion;
- and
- the plurality of melamine cyanurate particles have a bulk density of 0.24 g/ml, a D10 of 0.5 μm, a D50 of 1.3 μm, and a D90 of 4.7 μm.
A method of forming a bearing element, comprising:
- depositing onto a bearing element substrate a bearing material including a polymeric matrix of polyamide-imide (PAI) polymer material and a plurality of melamine cyanurate particles dispersed within and distributed evenly throughout the polymeric matrix such that the bearing material has a uniform composition;
- and
- mixing a plurality of aluminum flakes, a leveller, and an adhesion agent with the polyamide-imide (PAI) polymer material and the plurality of particles of melamine cyanurate such that:
- the plurality of particles of melamine cyanurate form about 8 wt % to about 12 wt % of the bearing material;
- the plurality of melamine cyanurate particles have a D10 of 0.5 μm, a D50 of 1.3 μm, and a D90 of 4.7 μm;
- the plurality of aluminum flakes form about 26 wt % of the bearing material;
- and
- the leveller forms less than 0.5 wt % of the bearing material.
5 more elements
Dependencies are inferred from the claim text.