This valve seat is composed of an oxidation-treated iron-base sintered alloy.

The cutting edge part (32) of the machining head (3A) is formed of a sintered alloy (W).

The cam (18) is made of sintered alloy, and the drive wheel (19) is made of synthetic resin.

Hard particles are incorporated as a starting material in a sintered alloy.

Process for producing a ductile, high strength, oxide dispersion hardened sintered alloy based on a metal having a high melting point.

The invention relates to a burner module having a body that is either sintered or photo-cured, and to methods of making such a burner module.

A sintered gear made of sintered alloy with a metallic matrix and pores.

A valve seat which is made of an Fe-base sintered alloy and is excellent in wear resistance.

This can provide an iron-based sintered alloy where fine M?7#191C?3#191 carbides are dispersed in martensitic texture.

Accordingly, a reduction in the cost of a Cu-free iron-based sintered alloy the various characteristics of which are excellent is achieved.

A cam shaft (10) is composed of components such as a hollow shaft (11) and a cam lobe (12) or other component made of a sintered alloy.

For a valve seat employing an iron-based sintered alloy, an oxidation treatment is used to form an oxide mainly composed of triiron tetraoxide on the surface and inner section of the iron-based sintered alloy.

Specifically disclosed is a valve seat made of the combined iron-based sintered alloy wherein hard particles and a solid lubricant are dispersed.

Disclosed is an iron-based sintered alloy which is obtained by sintering a powder compact formed by pressing a raw material powder mainly containing Fe.

A cam shaft is formed by molding thereonto a green compact which will form an assembly component (20) made of a sintered alloy when subjected to liquid-phase sintering.