Patent ID: 8029918

Claim:
A brazed structure comprising: a first member; a second member; a braze joint joining the first member and second member to each other, the braze joint being made of a fused brazing material of a Cu—Ni alloy consisting essentially of not less than about 17 mass % and not greater than about 20 mass % of Ni and the balance of Cu; wherein the first member includes a base plate made of a ferrous material and a diffusion suppressing layer laminated on the base plate, and the diffusion suppressing layer being arranged to suppress diffusion of Fe atoms from the base plate into the braze joint disposed on the diffusion suppressing layer during brazing and being made of a Ni—Cr alloy consisting essentially of not less than about 15 mass % and not greater than about 40 mass % of Cr and the balance of Ni; the braze joint is made of a Cu—Ni—Cr alloy being formed by self-solidification, consisting essentially of not less than about 34 mass % of Ni and not less than 10 mass % of Cr and the balance of Cu and being free from segregated solidification.