초록 ▼

Joined connections between a metallic compact body made by melting metallurgy and a body made by powder metallurgy are prepared by providing a pre-formed, unsintered pressed body having at least one component which forms a liquid phase at the sintering temperature, placing the pre-formed body direct

Joined connections between a metallic compact body made by melting metallurgy and a body made by powder metallurgy are prepared by providing a pre-formed, unsintered pressed body having at least one component which forms a liquid phase at the sintering temperature, placing the pre-formed body directly in contact with a metallic compact body without application of external pressure and subjecting the contacted bodies to a temperature sufficient to sinter the pressed body but below the liquidus temperature of the compact body.

대표청구항 ▼

A method for forming a joined connection between a sintered pressed body made by powder metallurgy and a metallic compact body, said method consisting essentially of: (a) providing an unsintered pre-formed pressed body made from a mixture of powdered metallurgical components, at least one of said co

A method for forming a joined connection between a sintered pressed body made by powder metallurgy and a metallic compact body, said method consisting essentially of: (a) providing an unsintered pre-formed pressed body made from a mixture of powdered metallurgical components, at least one of said components forming a liquid phase at the sintering temperature of the pressed body; (b) placing a surface of said pressed body directly in contact with a surface of a metallic compact body, made by melting metallurgy, without applying external pressure; and (c) subjecting the contacted pressed body and compact body, in a vacuum or a protective gas atmosphere, without application of external pressure, to a temperature below the liquidus temperature of the compact body but sufficient to sinter said pressed body, thereby firmly joining together the compact body and the sintered pressed body.