US 12,134,132 B2
Method to form metal matrix composite reinforced with eggshell
Mohamed Abdrabou Hussein, Dhahran (SA); Mohammed Abdul Azeem, Dhahran (SA); A. Madhan Kumar, Dhahran (SA); and Noha Mohamed Emara, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Jun. 23, 2022, as Appl. No. 17/847,846.
Prior Publication US 2023/0415230 A1, Dec. 28, 2023
Int. Cl. B22F 7/00 (2006.01); B22F 1/052 (2022.01); B22F 1/142 (2022.01); B22F 3/12 (2006.01); C22C 1/04 (2023.01); C22C 1/05 (2023.01)
CPC B22F 7/008 (2013.01) [B22F 1/052 (2022.01); B22F 1/142 (2022.01); B22F 3/12 (2013.01); C22C 1/0408 (2013.01); C22C 1/05 (2013.01); B22F 2301/058 (2013.01); B22F 2301/205 (2013.01); B22F 2302/45 (2013.01); B22F 2304/10 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method to form a metal matrix composite reinforced with eggshell(ES), comprising:
blending and milling a powder consisting of at least one magnesium (Mg) powder and at least one zirconium (Zr) powder and at least one ES powder to form a powder mixture;
compacting the powder mixture in a press to form a compacted powder mixture; and
sintering the compacted powder mixture to form a composite matrix by making the compacted powder mixture coalesce into a solid or porous mass by heating it without complete liquifaction;
wherein said at least one Mg powder has a particle size in a range of 20 to 70 micrometers (μm);
wherein said at least one Zr powder has a particle size in a range of 20 to 60 μm;
wherein after the sintering, the composite matrix consists of magnesium, zirconium, and ES; and
wherein the amount of magnesium in the composite matrix is from 89.9 to 99.9 wt. %, the amount of zirconium in the composite matrix is from 0.1 to 10 wt. %, and the amount of ES in the composite matrix is from 0.1 to 10 wt. %.