Coating for a device for forming glass products
The invention relates to a coating for a device for forming glass products, comprising: a first quasicrystalline or approximant or amorphous metallic phase; and a second phase composed of a eutectic alloy having a melting point between 950 and 1150° C. and having a nominal hardness between 30 and 65 HRc; a mould for manufacturing hollow glass products that is provided with this coating; equipment for forming glass in sheets or plates that is provided with this coating; a material constituting this coating; a premixed or prealloyed powder, or a flexible cord or cored-wire that makes it possible to obtain this coating; a thermal spraying process for obtaining this coating.
1. Coating for a device for forming glass products, wherein the coating comprises:
a first quasicrystalline or approximant or amorphous metallic phase; and
a second phase comprising a eutectic alloy having a melting point between 950 and 1150° C. and having a nominal hardness between 30 and 65 HRc.
2. Coating according to claim 1 , wherein the coating comprises a third solid lubricant phase.
3. Coating according to claim 2 , wherein said first, second and third phases are present in amounts of 30-75 vol %, 70-25 vol % and up to 30 vol %, respectively.
4. Coating according to claim 1 , wherein said first phase is a quasicrystalline and/or approximant phase and comprises an aluminium-based alloy and/or said first phase is an amorphous metallic phase and comprises a zirconium-based alloy and/or a high-entropy alloy.
5. Coating according to claim 1 , wherein said second phase comprises:
a nickel-based alloy comprising the following elements in the following amounts, indicated in % by weight:
Cr:
0-20
C:
0.01-1
W:
0-30
Fe:
0-6
Si:
0.4-6
B:
0.5-5
Co:
0-10
Mn:
0-2
Mo:
0-4
Cu:
0-4
or a cobalt-based alloy comprising the following elements in the following amounts, indicated in % by weight:
Ni:
10-20
Cr:
0-25
C:
0.05-1.5
W:
0-15
Fe:
0-5
Si:
0.4-6
B:
0.5-5
Mn:
0-2
Mo:
0-4
Cu:
0-4
or a mixture of two such alloys.
6. Coating according to claim 2 , wherein said third phase comprises at least one of the following compounds, or of a mixture of two or more of them:
XF 2 where X is at least one selected from the group consisting of Ca, Mg, Sr, and Ba,
XF 3 where X is at least one selected from the group consisting of rare earth elements,
BN with hexagonal structure,
at least one selected from the group consisting of MoS 2 , WS 2 , and CrS,
X 2 MoOS 3 where X is Ni, and
XSiB where X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr.
7. Coating according to claim 1 , wherein its thickness is at least equal to 5 μm.
8. Coating according to claim 1 , wherein its thickness is at most equal to 500 μm.
9. Mould for manufacturing hollow glass products comprising a baffle including a cavity, wherein at least one part of the cavity comprises a coating according to claim 1 .
10. Equipment for forming glass in sheets or plates, of which at least one part of the surface in contact with the glass comprises a coating according to claim 1 .
11. Material constituting a coating according to claim 1 .
12. Coating according to claim 2 , wherein said first, second and third phases are present in amounts of 45-65 vol %, 45-25 vol % and up to 20 vol %, respectively.
13. Coating according to claim 1 , wherein its thickness is at least equal to 20 μm.
14. Coating according to claim 1 , wherein its thickness is at most equal to 200 μm.
15. Coating according to claim 6 , wherein said third phase comprises XF 3 where X is at least one selected from the group consisting of Sc, Y and La.
16. Coating according to claim 6 , wherein said third phase comprises XF 2 where X is at least one selected from the group consisting of Ca, Mg, Sr, and Ba.
17. Coating according to claim 6 , wherein said third phase comprises XF 3 where X is at least one selected from the group consisting of rare earth elements.
18. Coating according to claim 6 , wherein said third phase comprises BN with hexagonal structure.
19. Coating according to claim 6 , wherein said third phase comprises at least one selected from the group consisting of MoS 2 , WS 2 , and CrS.
20. Coating according to claim 6 , wherein said third phase comprises X 2 MoOS 3 where X is Ni.
21. Coating according to claim 2 , wherein said third phase comprises MSi 2 where M=Mo, W, Ni or Cr.
22. Coating according to claim 2 , wherein said third phase comprises a boride compound comprising boron and at least one metal selected from the group consisting of Mo, Cr, Co, Ni, Fe, Mn, V, Ti and Zr.
23. Coating according to claim 2 , wherein said third phase comprises a boride compound comprising boron and at least two metals selected from the group consisting of Mo, Cr, Co, Ni, Fe, Mn, V, Ti and Zr.
24. Coating according to claim 6 , wherein said third phase comprises XSiB where X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr.
25. Coating according to claim 16 , wherein said third phase comprises XF 2 selected from the group consisting of CaF 2 , MgF 2 and BaF 2 .
26. Coating according to claim 21 , wherein said third phase comprises MoSi 2 .
27. Coating according to claim 22 , wherein said third phase comprises TiB 2 and/or ZrB 2 .
28. Coating according to claim 23 , wherein said third phase comprises MoCoB and/or Mo 2 NiB 2 .