Patent · US Expired

Melted-infiltrated fiber-reinforced composite ceramic

US6793873B2 · kind B2 · utility

10Cited by

2References

35Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Rainer Gadow · Aschau am Inn, DE
Tilmann Haug · Weißenhorn, DE
Andreas Kienzle · Thierhaupten, DE

Key dates

Filing date	Aug 23, 2001
Grant date	Sep 21, 2004
Priority date	—
Expiry date	Aug 23, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/249924
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A melt-infiltrated, fiber-reinforced composite ceramic containing high-temperature-resistant fibers, in particular fibers based on Si/C/B/N, which are reaction-bonded to a matrix based on Si and also a process for producing such a composite ceramic are described. The silicon melt which is used for the melt infiltration contains additions of iron, chromium, titanium, molybdenum, nickel or aluminum, with particular preference being given to a silicon melt containing from about 5 to 50% by weight of iron and from about 1 to 10% by weight of chromium. This gives a simplified production process compared with conventional silicon melt infiltration and improved properties of the composite ceramic (FIG. 1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.