Patent ID: 11969783
Assignee: MAGNA INTERNATIONAL INC.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  Y | IPC B

Claim 1:
2. The insert of claim 1, wherein the at least one middle layer includes a first middle layer, a second middle layer, a third middle layer, and a fourth middle layer; the first middle layer is located between the inner layer and the second middle layer; the first middle layer includes the steel and the alloy of chromium, iron, and molybdenum; the second middle layer is located between the first middle layer and the third middle layer; the second middle layer includes the alloy of chromium, iron, and molybdenum in an amount greater than an amount of the alloy in the first layer; the third middle layer is located between the second middle layer and the fourth middle layer; the third middle layer includes the steel, the alloy of chromium, iron, and molybdenum, and the zirconium oxide; the fourth middle layer is located between the third middle layer and the inner layer; the fourth middle layer includes the steel, the alloy of chromium, iron, and molybdenum, and the zirconium oxide in an amount greater than an amount of the zirconium oxide in the third middle layer.