Patent ID: 7785671

Claim:
A method of manufacturing a thermal barrier coating product comprising a metal substrate, a metal bonding layer, and a ceramic thermal barrier layer formed integrally on the surface of the metal substrate via the metal bonding layer, the method comprising: forming the metal bonding layer on the surface of the metal substrate; melting a composite oxide deposition material by an electron beam physical vapor deposition method to yield a resulting raw material vapor, wherein the composite oxide deposition material comprises 2 to 10 mol % of lanthanum oxide and is obtained by adding La 2 O 3 to a ZrO 2 —HfO 2 containing a stabilizer; and depositing the resulting raw material vapor on the surface of the metal bonding layer to form the ceramic thermal barrier layer having a columnar structure of a zirconia-hafnia solid solution containing the stabilizer, wherein the ZrO 2 —HfO 2 containing the stabilizer is represented by the general formula: (Zr α Hf 1-α )O 2 -β mol %(M 2 O 3 ), and the ceramic thermal barrier layer is represented by the general formula: (Zr α Hf 1-α )O 2 -β mol %(M 2 O 3 )-γ mol %(La 2 O 3 ), where M 2 O 3 represents the stabilizer, and M is at least one element selected from a group consisting of Y, Er, Gd, Yb, Ce, Nd, Pr and Sc, and α, β and γ are coefficients such that: 0.05<α<1,4 ≦β≦15, and 2≦γ≦10.