1. A bearing comprising:
a bearing assembly having an inner race and an outer race; and a plurality of rolling elements disposed between the inner race and the outer race, wherein at least one of the inner race, the outer race and the plurality of rolling elements is at least partially fabricated from an AlMgBi4 containing ceramic matrix composite.
2. The bearing of claim 1, wherein a ratio of aluminum, magnesium and boron in the AlMgBi4 containing ceramic matrix composite is represented by x:y: 1, wherein x and y is less than about 1.
3. The bearing of claim 1, wherein the AlMgB^ containing ceramic matrix composite comprises a metal containing matrix having a plurality of AlMgBi4 containing particles or fibers dispersed throughout the metal containing matrix.
4. The bearing of claim 3, wherein the metal containing matrix comprises at least one of a group III element, a group IV element, or a group V element.
5. The bearing of claim 3, wherein the AlMgB^ containing ceramic matrix composite comprises the metal containing matrix in an amount of up to about 90% of a total weight of the AlMgBi4 containing ceramic matrix composite.
6. The bearing of claim 3, wherein the metal containing matrix comprises titanium diboride (TiB2).
7. The bearing of claim 6, wherein a ratio of AlMgB^ to TiB2 within the AlMgB 14 containing ceramic matrix composite may be about 1:1.
11

8. The bearing of claim 1, wherein the at least one of the inner race, the outer race or the plurality of rolling elements is a monolithic part fabricated from the AlMgB14 containing ceramic matrix composite.
9. The bearing of claim 8, wherein the monolithic part has a porosity of less than about 5%.
10. The bearing of claim 1, wherein the at least one of the inner race, the outer race or the plurality of rolling elements is fabricated from a metal or ceramic and coated with the AlMgB14 containing ceramic matrix composite.
11. The bearing of claim 10, wherein the ceramic is silicon nitride (Si3N4).
12. The bearing of claim 1, wherein the AlMgB14 containing ceramix matrix composite has a hardness (Hv) of about 1500 to about 4500.
13. The bearing of claim 1, wherein the AlMgB14 containing ceramic matrix composite has coefficient of friction of less than about 0.05.
14. A bearing comprising:
a bearing assembly having an inner race and an outer race; and a plurality of rolling elements disposed between the inner race and the outer race, wherein at least one of the inner race, the outer race and the plurality of rolling elements is a monolithic part fabricated from an AlMgB14 containing ceramic matrix composite, wherein the AlMgB14 containing ceramic matrix composite comprises a plurality of AlMgB14 containing particles or fibers dispersed throughout a TiB2 containing metal matrix.
15. The bearing of claim 14, wherein a ratio of AlMgB14 to TiB2 within the
AlMgB14 containing ceramic matrix composite may be about 1:1.
12

16. The bearing of claim 14, wherein the AlMgB^ containing ceramic matrix
composite comprises the TiB2 containing metal matrix in an amount of up to
about 90% of a total weight of the AlMgBi4 containing ceramic matrix composite.
17. The bearing of claim 14 wherein the monolithic part has a porosity of less than about 5%.
18. The bearing of claim 14, wherein a ratio of aluminum, magnesium and boron in the AlMgBi4 containing ceramic matrix composite is represented by x:y: 1, wherein x and y is less than about 1.
19. The bearing of claim 14, wherein the AlMgB^ containing ceramix matrix composite has a hardness (Hv) of about 1500 to about 4500.
20. The bearing of claim 14, wherein the AlMgB^ containing ceramic matrix composite has coefficient of friction of less than about 0.05.
13