Patent ID: 6344117
Filing Date: 2002-02-05
Classification: B23K,C23C

Abstract:
A backing plate for sputtering, comprising:a metal base portion; and a metal cooling portion having a cooling medium flow path at an inner portion thereof, the cooling portion being attached to the base portion, wherein the cooling portion is constituted by a roll bond panel, wherein said roll bond panel is comprised of two plates compressively bonded except for non-bonded portions, an inside of said non-bonded portion being expanded to form said cooling medium flow path, whereby cooling medium passing through said cooling medium flow path is prevented from coming in contact with said base portion by one of said two plates disposed between said cooling medium flow path and said base portion, wherein the base portion and the cooling portion are attached together by friction agitation bonding, and wherein the friction agitation bonding is conducted by inserting a rotating pin-shaped probe into a portion to be joined and relatively moving the inserted rotating probe along the portion while softening and agitating the portion in contact with the probe by friction heat.