US 12,139,795 B1
Quenching and coating metals using gold-based effervescent tablets
Naser Alsayegh, Safat (KW); Nawaf F. Aljuwayhel, Safat (KW); and Husain Bahzad, Safat (KW)
Assigned to KUWAIT UNIVERSITY, Safat (KW)
Filed by KUWAIT UNIVERSITY, Safat (KW)
Filed on Oct. 20, 2023, as Appl. No. 18/382,254.
Int. Cl. C23C 24/00 (2006.01); B22F 1/05 (2022.01); B22F 1/054 (2022.01); C21D 1/18 (2006.01); C22F 1/00 (2006.01)
CPC C23C 24/00 (2013.01) [B22F 1/05 (2022.01); B22F 1/054 (2022.01); C21D 1/18 (2013.01); C22F 1/002 (2013.01); B22F 2301/255 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for fabricating an effervescent suspension for metallic quenching and coating purposes, comprising the steps of:
providing a mixture of effervescent agents with solid particles in a container of water, the mixture comprising a solid alkaline, a solid acid and noble and/or platinum-group metal particles as an effervescent bath, to produce a reaction in the water resulting in the release of CO2 gas the mixture having a mass ratio of NaH2PO4 to Na2CO3 to gold (Au) particles with other alloys particles of 20.4:6:1, the CO2 gas dispersing the noble and/or platinum-group metal particles in the water to provide the suspension;
heating an object for coating to a temperature below the object's melting point; and
placing the object in the effervescent bath to provide a quenched metal coated with noble metal particles.