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A metallic carrier for automobile exhaust gas purification made of thin metal foil includes a honeycomb unit composed of 8-25 μm thick corrugated metal foil and flat metal foil joined by solder joints not fewer than 70% of which have a thickness of at least 1.5 times and not greater than 4 times the

A metallic carrier for automobile exhaust gas purification made of thin metal foil includes a honeycomb unit composed of 8-25 μm thick corrugated metal foil and flat metal foil joined by solder joints not fewer than 70% of which have a thickness of at least 1.5 times and not greater than 4 times the foil thickness. A method of producing the metal carrier includes a step of forming a honeycomb unit in which 8-25 μm thick corrugated metal foil and flat metal foil are joined by solder joints using a solder powder, the solder powder having a particle diameter not greater than 4.5 times the thickness of the metal foil constituting the honeycomb unit.

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1. A metallic carrier for automobile exhaust gas purification made of thin metal foil comprising: a honeycomb unit composed of 8-25 μm thick corrugated metal foil and flat metal foil joined by solder joints, wherein solder joints having a thickness of at least 1.5 times and not greater than 4 tim

1. A metallic carrier for automobile exhaust gas purification made of thin metal foil comprising: a honeycomb unit composed of 8-25 μm thick corrugated metal foil and flat metal foil joined by solder joints, wherein solder joints having a thickness of at least 1.5 times and not greater than 4 times the foil thickness account for not fewer than 70% of all solder joints between the two foils. 2. A metallic carrier for automobile exhaust gas purification according to claim 1, wherein the metal foils are stainless steel foils containing, in percentage by weight, greater than 6.5% to 10% of Al. 3. A metallic carrier for automobile exhaust gas purification according to claim 2, wherein the metal foils are produced by enriching in Al by cladding or plating. 4. A metallic carrier for automobile exhaust gas purification according to claim 1 or 2, wherein the solder joints are formed by using a solder powder having a particle diameter of not greater than 4.5 times the thickness of the metal foils. 5. A metallic carrier for automobile exhaust gas purification according to claim 1 or 2, wherein the metal foils are enriched in Al by cementation to have an Al content, in percentage by weight, of greater than 6.5 to 10%. 6. A metallic carrier for automobile exhaust gas purification made of thin foil comprising: a honeycomb unit composed of 8-25 μm thick corrugated metal foil and flat metal foil joined by solder joints, wherein solder joints having a thickness of at least 1.5 times and not greater than 3.5 times the foil thickness account for not fewer than 70% of solder joints between the two foils and the solder joints are formed by using solder powder with a particle diameter of not greater than 4 times of the foil thickness and containing, in terms of wt %, Cr: 15-20%, Si: 9-13%, P: 1-5% and the remainder Ni and unavoidable impurities. 7. A metallic carrier for automobile exhaust gas purification according to claim 1, 2, 3, or 6, wherein the metallic carrier is produced by the steps comprising; coating adhesive or binder in advance to the area to be soldered of a honeycomb body constituted by the corrugated foil and the flat foil, inclining he honeycomb body to a direction of a gas flow, blowing forcefully the solder powder from a nozzle in combination with compressed air to the top portion of the honeycomb body which is rotating, and, heat treating the resultant honeycomb body.