COATED ROTATING TOOL

PROBLEM TO BE SOLVED: To provide a tool for friction stir welding which is capable of promoting temperature rise of material to be welded during welding, performing the friction stir welding in a short time while a coating layer has excellent heat insulation, excellent oxidation resistance, and exce...

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Bibliographische Detailangaben
Hauptverfasser:	UCHIUMI YOSHIHARU, MORIGUCHI HIDEKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a tool for friction stir welding which is capable of promoting temperature rise of material to be welded during welding, performing the friction stir welding in a short time while a coating layer has excellent heat insulation, excellent oxidation resistance, and excellent wear resistance.SOLUTION: A tool for friction stir welding includes base material and a coating layer formed on the base material. The coating layer consists of two or more layers, and the entire coating layer has thermal permeability of 8000 J/smK or less. At least one layer out of the coating layers contains a hexagonal crystal system and/or amorphous. At least one layer out of the coating layers contains a cubic crystal system, and the coating layer has compressive stress.SELECTED DRAWING: Figure 2 【課題】接合時において被接合材の昇温を促進し、短時間で摩擦撹拌接合ができるとともに、被覆層が断熱性に優れ、かつ耐酸化性および耐摩耗性に優れる摩擦攪拌接合用ツールを提供する。【解決手段】本発明の摩擦攪拌接合用ツールは、基材と、該基材上に形成された被覆層とを含むものであって、該被覆層は、２以上の層からなり、かつ被覆層全体として８０００Ｊ／ｓ0.5・ｍ2・Ｋ以下の熱浸透率を有し、被覆層のうちの少なくとも一層は、六方晶型結晶系および／または非晶質を含み、被覆層のうちの少なくとも一層は、立方晶型結晶系を含み、被覆層は、圧縮応力を有することを特徴とする。【選択図】図２