CN-121985064-A - Metal material, structural member, and electronic device

Abstract

The embodiment of the application provides a metal material, a structural member and electronic equipment. By arranging the texture structure on the surface of the metal material, the contact area between the metal surface and the hands of a consumer is changed on the premise of not negatively affecting the mechanical properties of the metal material, so that the risk that fingerprints or dirt remain on the surface of the metal material is effectively reduced.

Inventors

• LI MING
• XU YANXIANG
• ZHONG MANJIANG
• LI QINGMENG
• WU WEIJIE
• ZHOU QING
• XU FENG
• XU TING

Assignees

• 华为技术有限公司

Dates

Publication Date

20260505

Application Date

20250701

Priority Date

20250610

Claims (17)

1. 1. The metal material is characterized by comprising a metal substrate, wherein at least one side surface of the metal substrate is provided with a metal texture layer, and the metal texture layer comprises a plurality of texture units, wherein each texture unit comprises one or more texture structures, and the texture structures are bulges or grooves; The orthographic projection area of any texture structure on the metal substrate is 0.01 mu m 2 -22500μm 2 , and the dimension of any texture structure in the stacking direction of the metal substrate and the metal texture layer is 2 mu m-20 mu m.
2. 2. The metallic material as recited in claim 1, wherein an orthographic projection area of any one of the texture structures on the metallic substrate is 0.01 μm 2 -3000μm 2 .
3. 3. The metallic material according to claim 1 or 2, wherein a dimension of any one of the texture structures in a lamination direction of the metallic substrate and the metallic texture layer is 7 μm to 12 μm.
4. 4. A metallic material according to any one of claims 1 to 3, wherein the distance between any two adjacent said textures is 3 μm to 150 μm.
5. 5. The metallic material as recited in claim 4, wherein a distance between any adjacent two of the texturing structures is 30 μm to 100 μm.
6. 6. The metallic material as recited in any one of claims 1-5, wherein the plurality of texture units comprises a plurality of first texture units and a plurality of second texture units, the first texture units and the second texture units being alternately arranged in sequence in a first direction and a second direction; The extending direction of the first texture structure is different from that of the second texture structure; the first direction and the second direction are perpendicular to the lamination direction of the metal substrate and the metal texture layer, and the first direction and the second direction are different.
7. 7. The metallic material as recited in claim 6, wherein the first direction is perpendicular to the second direction, and wherein an angle between an extending direction of the first texture and an extending direction of the second texture is 20 ° to 90 °.
8. 8. The metallic material as recited in claim 7, wherein a pitch of any adjacent two of the first texture units in an arrangement direction of the plurality of first texture structures is 30 μm to 800 μm; and/or, in the arrangement direction of the plurality of second texture structures, the interval between any two adjacent second texture units is 30-800 μm.
9. 9. The metallic material of any of claims 1-8, wherein the maximum dimension of the orthographic projection of the texture structure on the metallic substrate is 150 μιη -500 μιη and the minimum dimension is 20 μιη -150 μιη.
10. 10. The metallic material of any of claims 1-9, wherein the texture unit comprises a plurality of textures arranged in parallel, and the texture unit has a size of 60 μιη to 1000 μιη along an arrangement direction of the plurality of textures.
11. 11. The metallic material as recited in any one of claims 1-10, wherein the surface roughness Ra of the texture is less than or equal to 1 μm.
12. 12. The metallic material as recited in any one of claims 1-11, wherein the metallic substrate is integrally formed with the metallic texture layer.
13. 13. The metallic material as recited in any one of claims 1-12, wherein the metallic material has a steel wool abrasion resistance of greater than or equal to 1000.
14. 14. The metal material according to any one of claims 1 to 13, wherein the metal material is an aluminum alloy, and the surface Vickers hardness of the metal material is not less than 130HV, or, The metal material is made of magnesium alloy, the Vickers hardness of the surface of the metal material is more than or equal to 80HV, or, The material of the metal material is titanium alloy, and the surface Vickers hardness of the metal material is more than or equal to 200HV.
15. 15. The metallic material as recited in any one of claims 1-14, wherein the metallic material has a stiffness of ≡110N/mm.
16. 16. A structural member comprising the metallic material of any one of claims 1-15.
17. 17. A terminal device, characterized in that it comprises a structural element according to claim 16.

Description

Metal material, structural member, and electronic device Technical Field The embodiment of the application relates to the technical field of metal materials, in particular to a metal material, a structural member and electronic equipment. Background At present, a common mobile phone cover plate in the market is generally made of glass or ceramic, but the cover plate made of the material has relatively high risk of cracking after being impacted violently, and the mobile phone cover plate has certain aesthetic fatigue after being used for a long time. Therefore, when a finger is pressed on the bright metal material, the grease can remain on the metal surface after being contacted with the metal, so that a large amount of fingerprints remain on the surface of the metal shell, the touch feeling of the shell is influenced, and the use feeling of a consumer is seriously influenced. Therefore, an anti-fingerprint coating (ANTI FINGER-coating, AF-coating) is often formed on the outer surface of the metal material to improve the technical problems, but fingerprints, greasy dirt and the like generated on the metal cover plate are only easy to erase on the basis of the existing AF-coating technology, but the phenomenon that fingerprints and dirt are easy to frequently generate when the fingers are contacted with the metal cover plate is not fundamentally improved. Disclosure of Invention In view of this, the embodiment of the application provides a metal material, a structural member and an electronic device. By arranging the texture structure on the surface of the metal material, the contact area between the metal surface and the hands of a consumer is changed on the premise of not negatively affecting the mechanical properties of the metal material, so that the risk that fingerprints or dirt remain on the surface of the metal material is effectively reduced. The first aspect of the embodiment of the application provides a metal material, which comprises a metal substrate, wherein at least one side surface of the metal substrate is provided with a metal texture layer, and the metal texture layer comprises a plurality of texture units, wherein each texture unit comprises one or more texture structures, and the texture structures are bulges or grooves; The orthographic projection area of any texture structure on the metal substrate is 0.01 mu m 2-22500μm2, and the dimension of any texture structure in the stacking direction of the metal substrate and the metal texture layer is 2 mu m-20 mu m. According to the metal material provided by the embodiment of the application, the orthographic projection area of the texture structure on the metal substrate is regulated and controlled to be 0.01 mu m 2-22500μm2, and the size of the texture structure in the lamination direction of the metal substrate and the metal texture layer is 2 mu m-20 mu m, so that the risk of fingerprints and residual greasy dirt generated on the metal surface is reduced, the problem that fingerprints and greasy dirt are easy to generate on the metal surface is solved fundamentally, and meanwhile, the metal material still has higher rigidity, hardness and better wear resistance. In addition, the special parameter design of the texture structure can realize the construction of texture patterns, change the pure specular reflection of metal, enable the metal texture layer to show the visual effect of light shadow follow-up under illumination, highly restore the metal texture of the metal texture layer, realize balance among the metal texture, the light shadow effect and the hand feeling of a user, realize the fingerprint resistance effect and simultaneously realize the advanced light shadow texture effect of the metal. In some embodiments of the present application, the orthographic projection area of any one of the texture structures on the metal substrate is 0.01 μm 2-3000μm2. Therefore, the matching degree with the polycrystalline characteristics of the metal is higher, the water and oil resistance and the fingerprint prevention effect of one side of the metal material with the metal texture layer are more favorably optimized, the surface roughness of the texture structure is also favorably reduced, the glossiness of the texture structure is improved, and the appearance effect of the metal texture layer is optimized. In some embodiments of the application, the dimension of any of the texture structures in the stacking direction of the metal substrate and the metal texture layer is 7 μm to 12 μm. Therefore, the pattern effect presented by the metal texture layer is clearer, the hand feeling of the surface of one side of the metal material with the texture layer is better, the waterproof and oil-proof fingerprint-resistant effect is better, the surface roughness of the texture structure is more favorably reduced, and the mechanical performance of the metal material is not influenced. In some embodiments of the application, the distance between any two adja