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1. (WO2019005989) PROCÉDÉS DE PRÉPARATION PERMETTANT LA LIAISON ADHÉSIVE D'ALLIAGES EN ALUMINIUM 7XXX, ET PRODUITS ASSOCIÉS AUXDITS PROCÉDÉS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

What is claimed is:

1. A method comprising:

(a) receiving a magnesium-containing aluminum alloy product, wherein the magnesium-containing aluminum alloy product comprises a matrix and a surface oxide layer overlying the matrix;

(i) wherein the surface oxide layer comprises an as-received thickness;

(ii) wherein the magnesium-containing aluminum alloy product comprises intermetallic particles at least proximal the surface oxide layer; and

(iii) wherein the intermetallic particles comprise Cu-bearing intermetallic particles; and

(b) ablating at least some of the intermetallic particles and in the absence of melting of the matrix of the magnesium-containing aluminum alloy product.

2. The method of claim 1, wherein the ablating step comprises volatilizing the intermetallic particles.

3. The method of claim 1, wherein, after the ablating step, the magnesium-containing aluminum alloy product comprises an ablated portion having a plurality of ablation voids proximal the surface oxide layer.

4. The method of claim 3, wherein the intermetallic particles define pre-ablation volumes, and wherein, due to the ablating, at least some of the plurality of ablation voids are greater in volume than the pre-ablation volumes.

5. The method of claim 1, wherein the intermetallic particles have a size of from 100 nm to 10 μιη.

6. The method of claim 1, wherein the ablating step comprises maintaining the surface oxide layer at the as-received thickness.

7. The method of claim 1, wherein the surface oxide layer comprises MgO.

8. The method of claim 7, wherein, after the ablating step, the surface oxide layer comprises at least 10 atomic % Mg.

9. The method of claim 1, comprising selectively ablating at least some of the intermetallic particles during the ablating step, thereby creating an ablated portion surrounded by an unablated portion.

10. The method of claim 1, comprising:

(a) determining locations of the intermetallic particles;

(b) selectively ablating at least some of the located intermetallic particles during the ablating step.

11. The method of claim 1, comprising:

determining at least one bonding location associated with the magnesium-containing aluminum alloy product; and

after the determining step, completing the ablating step relative to the at least one bonding location, thereby creating an ablated portion.

12. The method of claim 11, wherein, after the ablating step, the magnesium-containing aluminum alloy product comprises the ablated portion surrounded by an unablated portion.

13. The method of claim 12, comprising, after the ablating step, contacting the magnesium-containing aluminum alloy product with a functionalization solution.

14. The method of 12, comprising selectively contacting the ablated portion with a functionalization solution, thereby creating a pretreated portion of the magnesium-containing aluminum alloy product.

15. The method of claim 14, wherein the selectively contacting step comprises restricting contact between the unablated portion and the functionalization solution.

16. The method of claim 14, comprising selectively applying a bonding agent to the pretreated portion.

17. The method of claim 16, comprising joining the magnesium-containing aluminum alloy product to another material via the bonding agent.

18. The method of claim 1, wherein the intermetallic particles comprise at least one of Fe-bearing, Si-bearing, or Mg-bearing intermetallic particles.

19. The method of claim 1, wherein the ablating step comprises directing an energy source at the surface oxide layer.

20. The method of claim 19, wherein the energy source comprises a laser.

21. A magnesium-containing aluminum alloy product comprising an outer surface;

wherein the outer surface comprises a first zone and a second zone;

wherein the first zone comprises a plurality of ablation pits;

wherein the second zone is absent of ablation pits.

22. The magnesium-containing aluminum alloy product of claim 21, wherein the plurality of ablation pits are absent of copper plating.

23. The magnesium-containing aluminum alloy product of any of claims 21-22, wherein: the first zone is absent of Cu-bearing intermetallic particles; and

the second zone comprises Cu-bearing intermetallic particles.

25. The magnesium-containing aluminum alloy product of any of claims 21-24, wherein the first zone is absent of Fe-bearing intermetallic particles.

26. The magnesium-containing aluminum alloy product of any of claims 21-25, wherein the first zone comprises at least one of Mg2Si precipitates and Mg2Zn precipitates.

27. The magnesium-containing aluminum alloy product of any of claims 21-26, wherein the first zone comprises a functionalization layer;

wherein the functionalization is at least partially disposed on a surface oxide layer; wherein the surface oxide layer comprises one or more of MgO and A1203; wherein the surface oxide layer is disposed on a matrix of the magnesium-containing aluminum alloy product.

28. The magnesium-containing aluminum alloy product of any of claims 21-27, wherein the second zone is absent of a functionalization layer.

29. The magnesium-containing aluminum alloy product of any of claims 21-28, wherein a depth of the first zone is not greater than 10 micrometers, or not greater than 7 micrometers, or not greater than 5 micrometers, or not greater than 4 micrometers.

30. The magnesium-containing aluminum alloy product of claim 29, wherein the plurality of ablation pits realize an average depth that is not greater than the depth of the first zone.

31. The magnesium-containing aluminum alloy product of any of claims 21-30, wherein the first zone comprises an ablation pit density, wherein the ablation pit density is at least 100 ablation pits per square mm of outer surface, or at least 300 ablation pits per square mm of outer surface, or at least 600 ablation pits per square mm of outer surface, or at least 900 ablation pits per square mm of outer surface, or at least 1200 ablation pits per square mm of outer surface, or at least 1500 ablation pits per square mm of outer surface, or at least 1800 ablation pits per square mm of outer surface, or at least 2000 ablation pits per square mm of outer surface.

32. The magnesium-containing aluminum alloy product of any of claims 21-31, wherein the outer surface of the sheet comprises a roll grind line.

33. A magnesium-containing aluminum alloy sheet product comprising an upper surface and a lower surface;

wherein the upper surface of the magnesium-containing aluminum alloy sheet product comprises a surface oxide layer disposed on an aluminum alloy matrix;

wherein the surface oxide layer comprises an MgO portion;

wherein the surface oxide layer comprises A1203 portion;

wherein the MgO portion is at least partially disposed on the A1203 portion;

wherein the surface oxide layer is absent of copper-bearing intermetallic particles;

wherein the magnesium-containing aluminum alloy sheet product comprises a plurality of ablation pits;

wherein the plurality of ablation pits are proximal the surface oxide layer; wherein the plurality of ablation pits are proximal the aluminum alloy matrix; wherein the plurality of ablation pits are absent of copper plating.

34. The magnesium-containing aluminum alloy sheet product of claim 33, wherein the upper surface of the sheet comprises a roll grind line.

35. The magnesium-containing aluminum alloy sheet product of any of claims 33-34, wherein the upper surface comprises a functionalization layer;

wherein the functionalization layer is disposed on the surface oxide layer;

wherein the surface oxide layer is disposed on a matrix of the magnesium-containing aluminum alloy product;

wherein the matrix of the magnesium-containing aluminum alloy product is disposed between the upper surface and lower surface of the magnesium-containing aluminum alloy sheet.

36. The magnesium-containing aluminum alloy sheet product of any of claims 33-35, wherein the lower surface is absent of ablation pits.