CORROSION RESISTANT AMORPHOUS METALS AND METHODS OF FORMING CORROSION RESISTANT AMORPHOUS METALS
A system for coating a surface comprises providing a source of amorphous metal, providing ceramic particles, and applying the amorphous metal and the ceramic particles to the surface by a spray. The coating comprises a composite material made of amorphous metal that contains one or more of the following elements in the specified range of composition: yttrium (≧1 atomic %), chromium (14 to 18 atomic %), molybdenum (≧7 atomic %), tungsten (≧1 atomic %), boron (≦5 atomic %), or carbon (≧4 atomic %).
1 . A coating, comprising:
a composite material made of
amorphous metal that contains one or more of the following elements in the specified range of composition yttrium ≧1 atomic %; chromium 14 to 18 atomic %; molybdenum ≧7 atomic %; tungsten ≧1 atomic %; boron ≦5 atomic %; or carbon ≧4 atomic %, and
ceramic particles.
2 . The coating of claim 1 wherein said amorphous metal includes yttrium oxide.
3 . The coating of claim 1 wherein said ceramic particles have diameters in the range of five nanometers to five microns.
4 . The coating of claim 1 wherein said ceramic particles are oxides, carbides, or nitrides.
5 . The coating of claim 1 wherein said amorphous metal includes Fe-based, Ni-based, and Cu-based amorphous metals.
6 . The coating of claim 1 wherein said amorphous metal and ceramic particles form a layered metal-ceramic composite material with alternating layers of amorphous metal and ceramic particles.
7 . The coating of claim 1 wherein said amorphous metal and ceramic particles form a layered metal-ceramic composite material with alternating layers of amorphous metal and ceramic particles and wherein there are interfaces between said layers with sharp changes in composition at said interfaces.
8 . The coating of claim 1 wherein said amorphous metal and ceramic particles form a layered metal-ceramic composite material with alternating layers of amorphous metal and ceramic particles and wherein there are interfaces between said layers with compositional gradients at said interfaces.
9 . The coating of claim 1 wherein said amorphous metal is Fe-based, Ni-based, Cu-based, Al-based, or Zr-Based amorphous metal.
10 . A coating, comprising:
a composite material made of an-iron based amorphous metal that contains one or more of the following elements in any range of composition: yttrium, chromium, molybdenum, tungsten, boron, or carbon and
ceramic particles.
11 . The coating of claim 10 wherein said ceramic particles have diameters in the range of five nanometers to five microns.
12 . The coating of claim 10 wherein said ceramic particles are oxides, carbides, or nitrides.