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US 10,253,419 B2Granted
Electrodeposited, nanolaminate coatings and claddings for corrosion protection
AssigneeModumetal, Inc.
InventorChristina Lomasney
Life of this patent
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Abstract
Described herein are electrodeposited corrosion-resistant multilayer coating and claddings that comprises multiple nanoscale layers that periodically vary in electrodeposited species or electrodeposited microstructures. The coatings may comprise electrodeposited metals, ceramics, polymers or combinations thereof. Also described herein are methods for preparation of the coatings and claddings.
Claims13
A coating or cladding comprising:
- a series of alternating layers on a substrate or mandrel, each layer of the series of alternating layers having a thickness from about 5 nanometers to about 1,000 nanometers, the series of alternating layers comprising:
- A) a first layer of a first alloy that is less noble than the substrate or the mandrel, the first alloy comprising:
- i) a first metal in a first concentration that is at least about 1 wt. %, the first metal selected from Co, Fe, Ni, and Zn;
- and
- ii) a second metal in a second concentration that is at least about 1 wt. %;
- and
- B) a second layer of a second alloy that is less noble than the first alloy and less noble than the substrate or the mandrel, the second alloy comprising:
- i) the first metal in a third concentration that is at least about 1 wt. %;
- and
- ii) the second metal in a fourth concentration that is at least about 1 wt. %;
- the coating or cladding having a thickness from 5 microns to 50 microns.
8 more elements
A coating or cladding comprising:
- a series of alternating layers on a substrate or mandrel, each layer of the series of alternating layers having a thickness from about 5 nanometers to about 1,000 nanometers, the series of alternating layers having layers comprising:
- A) a barrier layer of a first alloy comprising:
- ii) a first metal in a first concentration that is at least about 1 wt. %, the first metal selected from Co, Fe, Ni, and Zn;
- and
- ii) a second metal in a second concentration that is at least about 1 wt. %;
- and
- B) a sacrificial layer of a second alloy that is more reactive than the first alloy, the second alloy comprising:
- i) the first metal in a third concentration that is at least about 1 wt. %;
- and
- ii) the second metal in a fourth concentration that is at least about 1 wt. %;
- the coating or cladding having a thickness from 5 microns to 50 microns.
8 more elements
Dependencies are inferred from the claim text.