Patent ID: 8545994

Claim:
An article comprising: (i) an electrodeposited metallic material comprising Co in the range of about 75 to 100% by weight, W in the range of 0 to 25% per weight, P in the range of about 0 to 25% per weight and boron in the range of between 0 and 10% per weight, and having a microstructure which is fine-grained with an average grain size between 2 and 5,000 nm and/or an amorphous microstructure; (ii) said metallic material forming at least part of an exposed surface of said article; (iii) said metallic material having an inherent contact angle for water of less than 90 degrees at room temperature when measured on a smooth exposed surface portion of said metallic material which has a maximum surface roughness Ra of 0.25 microns; and (iv) said metallic material having an exposed patterned surface portion having surface structures having a height of between at least 5 microns to 1000 microns incorporated therein to increase the contact angle for water at room temperature of said exposed patterned metallic material surface portion to over 100 degrees.