The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 1989
Filed:
Sep. 23, 1988
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi, JP;
Abstract
A method of forming a surface layer of carbide, nitride, carbonitride, or solid-solution on the surface of a material to be treated, which comprises disposing in a fluidized bed furnace a treating agent comprising a powder of a refractory material, and a powder of a metal for forming a carbide, nitride, carbonitride or solid-solution or a powder of an alloy thereof, introducing a fluidizing gas into the fluidized bed furnace to fluidize the treating agent and form a fluidized layer, disposing the material to be treated in the fluidized layer, and introducing a predetermined amount of halide into the fluidized layer, and an apparatus for forming the surface layer on the material to be treated, comprising a furnace body for forming the surface layer in the fluidized layer of the treating agent, a heating furnace for heating the fluidized layer, a halide supply pipe in communication with the outside of the furnace body, and a halide gas jetting pipe disposed within the furnace body, which is connected to the halide supply pipe and has a plurality of apertures opened into the fluidized layer.