Patent ID: 8535764
Filing Date: 2013-09-17
Classification: C22C,C23C,E04G

Abstract:
1. A method of coating a concrete delivery component comprising: providing a substrate comprising aluminum, for a concrete delivery component having a surface; providing a multi-component alloy comprising more than 50% by weight Fe plus Cr, Mo, W, Mn, Si, B and C having a critical cooling rate for metallic glass formation of less than 10 thermally depositing said multi-component alloy onto at least a portion of said substrate to form a protective coating, wherein said protective coating includes α- Fe and γ- Fe phases along with combinations of carbides, oxides and borides and is a metallic glass wherein at least a portion of said alloy has a combination of structural association sizes according to the following: (i) 5 to 100 Angstroms, (ii) 10 to 150 nm, and (iii) 150 nm to 1000 nm wherein said size range of 150 nm to 1000 nm is present at a level of at least 50% by volume of said protective coating, said coating has a hardness of 64 to 80 Rockwell C, and the interface between said substrate and said multi-component alloy exhibits a bond strength in the range of 5,000 to 10,000 psi.