Office or cosmetics article

Abstract

An office or cosmetics article made of a magnesium material, in particular a sharpener body or a ruler, has an inorganic, chemically bonded protective layer including at least one element selected from the group containing the metals of the main groups III, IV, V and VI and the subgroups Ib, IVb, Vb, VIb, VIIb and VIIIb of the Periodic Table of the Elements, as well as oxides, ceramics, nitrides, carbides, silicides and borides thereof. The office or cosmetics article is lastingly protected against corrosion by virtue of such a protective layer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A is a diagrammatic, perspective view of a sharpener;

FIG. 1B is an enlarged, perspective view of a portion of a body of the sharpener of FIG. 1A made of a magnesium material with a protective layer of chromium;

FIG. 2A is a perspective view of a sharpener similar to FIG. 1; and

FIG. 2A is an enlarged, perspective view of a portion of a body of the sharpener of FIG. 2A with a protective layer made of aluminum and an aluminum oxide.

Claims

1. An office or cosmetics article, comprising: a body formed of a magnesium material; andinorganic protective layer chemically bonded to said body, said protective layer including at least one element selected from the group containing metals of the main groups III, IV, V and VI and the subgroups Ib, IVb, Vb, VIb, VIIb and VIIIb of the Periodic Table of the Elements, and oxides, ceramics, nitrides, carbides, silicides and borides thereof.

2. The office or cosmetics article according to claim 1, wherein said body is a sharpener body, a ruler or a cosmetics container.

3. The office or cosmetics article according to claim 1, wherein said protective layer includes at least one element selected from the group containing Al, Sn, V, Cr, Mo, Zr, Hf, Ti, Fe, W, Pt, Cu, Ag, Au and oxides, ceramics, nitrides, carbides, silicides and borides thereof.

4. The office or cosmetics article according to claim 1, wherein said protective layer includes at least one layer made of a metal.

5. The office or cosmetics article according to claim 1, wherein said protective layer includes at least one layer made of a metal nitride, a metal carbide, a metal silicide or a metal boride.

6. The office or cosmetics article according to claim 5, wherein said metal nitride layer is a nitrided metal layer applied to said body.

7. The office or cosmetics article according to claim 6, wherein said nitrided metal layer is at least one layer selected from the group consisting of a nitrided chromium layer, a nitrided iron layer, a nitrided molybdenum layer and a nitrided tungsten layer.

8. The office or cosmetics article according to claim 5, wherein said metal boride layer is a boron compound deposited on said magnesium material body.

9. The office or cosmetics article according to claim 1, wherein said protective layer includes at least one layer made of a metal oxide.

10. The office or cosmetics article according to claim 9, wherein said metal oxide is a mixed metal oxide.

11. The office or cosmetics article according to claim 9, wherein said metal oxide includes a colored mixed oxide.

12. The office or cosmetics article according to claim 11, wherein said colored mixed oxide is at least one oxide selected from the group consisting of titanium oxide, vanadium oxide, zirconium oxide, niobium oxide and tantalum oxide.

13. The office or cosmetics article according to claim 1, wherein said protective layer contains a combination of layers having differing chemical compositions.

14. The office or cosmetics article according to claim 13, wherein said combination of layers is a metal as a first layer and a metal oxide as a second layer, chemically bonded to said magnesium material body.

15. The office or cosmetics article according to claim 14, wherein said metal is selected from the group consisting of aluminum, titanium and vanadium, and said metal oxide is selected from the group consisting of an aluminum oxide, a titanium oxide and a vanadium oxide.

16. The office or cosmetics article according to claim 15, wherein said metal and said metal oxide are jointly deposited by immersion into a solution of a corresponding metal salt having a suitable pH.

17. The office or cosmetics article according to claim 16, wherein said aluminum and said aluminum oxide have been jointly deposited on said magnesium material body by immersion into an aluminum nitrate solution in acetic acid.