Patent · US Expired

Metal powder composition

US4251274A · kind A · utility

1Cited by

6References

8Claims

0Family size

Assignee

Bleistahl G.m.b.H. · DE

Inventors

Michael Koehler · Oberlungwitz, DE
Wolfgang Petry · Bochum, DE

Key dates

Filing date	Jun 18, 1979
Grant date	Feb 17, 1981
Priority date	—
Expiry date	Jun 18, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S75/95
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A composition for compressing and sintering to produce high-wear resistant articles essentially includes between 2% and 10% by weight, preferably 5% by weight, basalt powder and the remainder being metallurgical powder. The metallurgical powder is preferably comprised of austenite steel powder of high commercial quality and the basalt powder is a commercial quality basalt. The article of manufacture is for an internal combustion engine supplied with lead-free fuel wherein the article is comprised of compressed and sintered metal powder having the entire resulting pore space filled with basalt. The article takes the form of a cylinder liner, a valve seat and/or a valve-seat ring.

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