US 11,685,971 B2
Degradable high-strength zinc compositions and method of manufacture
Andrew Sherman, Mentor, OH (US); Josh Caris, Euclid, OH (US); Nicholas Farkas, Euclid, OH (US); and Gabriel Santillan, Euclid, OH (US)
Assigned to TERVES, LLC, Euclid, OH (US)
Filed by Terves Inc., Euclid, OH (US)
Filed on Apr. 23, 2019, as Appl. No. 16/392,139.
Claims priority of provisional application 62/669,546, filed on May 10, 2018.
Prior Publication US 2019/0345585 A1, Nov. 14, 2019
Int. Cl. C22C 18/04 (2006.01); C22C 1/04 (2023.01); C22F 1/16 (2006.01)
CPC C22C 18/04 (2013.01) [C22C 1/0483 (2013.01); C22F 1/165 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A degradable high-strength zinc alloy which includes a) more than 50 wt. % zinc, 1.5-15 wt. % calcium, and three or more of aluminum, copper, magnesium, lead, tin, gallium, lithium, sodium, and strontium, or b) at least 50 wt. % zinc and 2-45 wt. % magnesium and three or more of aluminum, copper, calcium, lead, tin, and gallium; said degradable high-strength zinc alloy having a degradation rate of one or more of i) about 10-150 mg/cm2/ hr. in a 3 wt. % KCl fluid at a temperature of 90° C., ii) 0.1-75 mm/day at 50-135° C. in fresh water, iii) 0.1-75 mm/day at 50-135° C. in salt water or iv) 0.01-30 mm/day in a 3 wt. % KCl fluid at a temperature of 90° C.