Long length textured MgO template on Hastelloy C276™ (HC) has been successfully deposited in a reel-to-reel (R2R) electron beam (e-beam) evaporation system by inclined substrate deposition (ISD). High deposition rate up to 10 nm s −1 with exposure length of 7 cm has been realized. The MgO template showed good in-plane texture of 9.5 • -11.5 • measured from the (002) phi scans. Experimental results reveal that MgO in-plane texture is formed by the preferred growth direction of [11n] substrate normal and one of the MgO {200} planes rotates to the in-flux direction. A new expression, termed the 'two-thirds relationship', between the inclination angle α and the tilted angle of the (00l) plane from the substrate normal, β, has been summarized. YBa 2 Cu 3 O 7−δ (YBCO) film deposited by pulsed laser deposition (PLD) on strontium ruthenate (SRO) buffered ISD MgO showed T c of 91 K with transition width of 1 K. Critical current measurement indicated an I c of 110 A cm −1 at 77 K in self-field for 0.68 µm YBCO film, corresponding to a J c of 1.6 MA cm −2 .

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High-temperature perfl uoropolalkylether lubricants including Fomblin ® are susceptible to degradation and cause corrosion in the presence of ferrous metals such as M50 bearing steel. This paper describes the effect of surface treatment (nitriding), coating chemistry and architecture in preventing corrosion/oxidation of M50 steel and thermo-oxidative degradation of Fomblin ® fl uid. Specifi cally, Cr-CrN multilayered coating architecture was used with and without a nitrided steel surface. The oxidation/corrosion tests were conducted by immersing the nitrided and/or coated M50 coupons in Fomblin ® fl uid in an oxidative environment at 270°C for 24 h and compared with untreated/uncoated coupons. It is shown that a considerable lessening of the corrosion of the steel and degradation of the Fomblin ® fl uid can be achieved by nitriding alone. Nitriding in combination with the multilayered Cr-CrN coating exhibited the best protection. The results are discussed in relation to the literature data.

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