B i-Sr-Ca-Cu-O(BSCCO)高温超导材料在电力工程中拥有广阔的应用前景。本文全面概述了国内外研究B i系高温超导材料连接技术的现状和不足,重点介绍了BSCCO带材常规冷压成形后再高温反应退火的扩散焊连接技术,另外,阐述了近几年采用高温...B i-Sr-Ca-Cu-O(BSCCO)高温超导材料在电力工程中拥有广阔的应用前景。本文全面概述了国内外研究B i系高温超导材料连接技术的现状和不足,重点介绍了BSCCO带材常规冷压成形后再高温反应退火的扩散焊连接技术,另外,阐述了近几年采用高温加压直接扩散连接的最新研究成果。展开更多
Although Thackeray in his Vanity Fair has bitterly satirized the follies and cruelties of some Victorians among whom Benthamite Utilitarianism was rampant, there are few studies focusing on his criticism on this ideol...Although Thackeray in his Vanity Fair has bitterly satirized the follies and cruelties of some Victorians among whom Benthamite Utilitarianism was rampant, there are few studies focusing on his criticism on this ideology.This paper, through a study of Utilitarian principles and values, and an investigation into and an interpretation of Thackeray's symbolism through the two household articles—Iphigenia clock and the family Bible, exposes Thackeray's criticism on Benthamite Utilitarianism and offers a clue to its effects on Victorians.展开更多
The cube textured pure Ni and non magnetic Cu Ni tapes were obtained by rolling and recrystallization, and these tapes are suitable as substrates of the second generation high temperature superconducting tape. The t...The cube textured pure Ni and non magnetic Cu Ni tapes were obtained by rolling and recrystallization, and these tapes are suitable as substrates of the second generation high temperature superconducting tape. The texture of tapes was studied using Orientation Distribution Function (ODF) and φ scans. The results indicate that sharp cube texture of Cu 0 70 Ni 0.30 and pure Ni was formed at 1000 ℃ and that of Cu 0 85 Ni 0.15 was formed at 900 ℃. The intensities of cube texture differ from each other. Uniform equiaxial crystallites are formed in all the tapes and the size of Cu 0.85 Ni 0.15 is larger than that of Cu 0.70 Ni 0.30 and pure Ni. Annealing twin is formed in Cu 0.85 Ni 0.15 and Cu 0.70 Ni 0.30 .展开更多
Pure Ni and Ni alloy tapes with sharp cube texture and low-angle grain boundaries prepared by thermomechanical process were extensively used as substrates for coated conductor. The thermomechanical process usually inc...Pure Ni and Ni alloy tapes with sharp cube texture and low-angle grain boundaries prepared by thermomechanical process were extensively used as substrates for coated conductor. The thermomechanical process usually includes hot forging and cold rolling. In this study, a hot-rolling process between hot forging and cold rolling was induced. The influence of hot rolling on the cube texture of pure Ni was discussed. Sharp cube texture on pure Ni was obtained by suitable hot rolling, cold rolling, and recrystallization treatment. This deformation texture of tape was studied using orientation distribution function （ODF）. Orientation mapping, content of the cube texture, and grain boundary distribution were performed using an EBSD system mounted on LEO-1450 SEM. The results show that the substrates that are hot rolled have a sharp cube texture and low-angle grain boundaries.展开更多
文摘Although Thackeray in his Vanity Fair has bitterly satirized the follies and cruelties of some Victorians among whom Benthamite Utilitarianism was rampant, there are few studies focusing on his criticism on this ideology.This paper, through a study of Utilitarian principles and values, and an investigation into and an interpretation of Thackeray's symbolism through the two household articles—Iphigenia clock and the family Bible, exposes Thackeray's criticism on Benthamite Utilitarianism and offers a clue to its effects on Victorians.
文摘The cube textured pure Ni and non magnetic Cu Ni tapes were obtained by rolling and recrystallization, and these tapes are suitable as substrates of the second generation high temperature superconducting tape. The texture of tapes was studied using Orientation Distribution Function (ODF) and φ scans. The results indicate that sharp cube texture of Cu 0 70 Ni 0.30 and pure Ni was formed at 1000 ℃ and that of Cu 0 85 Ni 0.15 was formed at 900 ℃. The intensities of cube texture differ from each other. Uniform equiaxial crystallites are formed in all the tapes and the size of Cu 0.85 Ni 0.15 is larger than that of Cu 0.70 Ni 0.30 and pure Ni. Annealing twin is formed in Cu 0.85 Ni 0.15 and Cu 0.70 Ni 0.30 .
基金Project supported bythe National Basic Research Program China (2006CB601005)
文摘Pure Ni and Ni alloy tapes with sharp cube texture and low-angle grain boundaries prepared by thermomechanical process were extensively used as substrates for coated conductor. The thermomechanical process usually includes hot forging and cold rolling. In this study, a hot-rolling process between hot forging and cold rolling was induced. The influence of hot rolling on the cube texture of pure Ni was discussed. Sharp cube texture on pure Ni was obtained by suitable hot rolling, cold rolling, and recrystallization treatment. This deformation texture of tape was studied using orientation distribution function （ODF）. Orientation mapping, content of the cube texture, and grain boundary distribution were performed using an EBSD system mounted on LEO-1450 SEM. The results show that the substrates that are hot rolled have a sharp cube texture and low-angle grain boundaries.
