Patent ID: 7758699
Filing Date: 2010-07-20
Classification: C23C

Abstract:
1. A process for continuous deposition of a coating of an HTS tape, comprising: loading a substrate into a deposition chamber; translating the substrate through the deposition chamber along a first surface of a substrate block, the substrate block having a gas inlet for feeding gas into a manifold, the manifold distributing gas flow to a plurality of gas channels, including first and second gas channels, extending through the substrate block along a portion thereof and terminating at the first surface as respective openings at positions spaced apart from each other along the first surface, the substrate block further having an internal coolant channel located between the first and second gas channels; injecting an oxygen containing gas from the inlet, through the manifold, and through the plurality of gas channels of the substrate block and onto the substrate; and depositing a coating material from a deposition source on the substrate as the substrate translates along the substrate block to thereby form the coating, the coating being a buffer layer over which an HTS layer is formed, the buffer layer having a biaxial texture; impinging an ion beam from an ion source on the substrate during depositing; monitoring a thickness of the coating, a number of ions from the ion beam impinging on the substrate, and the biaxial texture of the coating during depositing; during deposition adjusting the power level of at least one of the ion source and the deposition source based on the monitoring of biaxial texture, wherein injecting the gas directly through the substrate block improves the biaxial texture of the buffer layer as compared to supplying gas indirectly into the deposition chamber.