title: Development and application of an apparatus for high-temperature measurement of magnetic susceptibility.
abstract: An apparatus for high-temperature measurement of magnetic susceptibility using the modified Gouy method was developed. It can be used at temperatures of up to 1200 °C. The apparatus consists of the heating system, weighing system, and temperature-programming controller. The sample should be placed at a position of relatively constant B(dB/dz) in a gradient magnetic field. Each crucible is used only once for a single measurement to reduce the error. The reliable accuracy and good repeatability of the apparatus are demonstrated by measuring the magnetic susceptibilities of a DD483 superalloy, Ni-based solid solution alloy, and Ni3Al-based solid solution alloy at various temperatures. The results also successfully explain the change in the γ' precipitation in DD483 superalloys. Therefore, the apparatus provides a convenient and powerful tool for investigating high-temperature phase transitions in the presence of a magnetic field.
authors.affiliation: Laboratory of Metallurgy and Materials Processing, College of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China.
authors.forename: Weili
authors.initials: W
authors.lastname: Ren
authors.affiliation: Laboratory of Metallurgy and Materials Processing, College of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China.
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.affiliation: Laboratory of Metallurgy and Materials Processing, College of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China.
authors.forename: Hongyu
authors.initials: H
authors.lastname: Liu
authors.affiliation: Laboratory of Metallurgy and Materials Processing, College of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China.
authors.forename: Yunbo
authors.initials: Y
authors.lastname: Zhong
authors.affiliation: Laboratory of Metallurgy and Materials Processing, College of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China.
authors.forename: Jianbo
authors.initials: J
authors.lastname: Yu
authors.affiliation: Laboratory of Metallurgy and Materials Processing, College of Materials Science and Engineering, Shanghai University, Shanghai 200072, People's Republic of China.
authors.forename: Zhongming
authors.initials: Z
authors.lastname: Ren
authors.affiliation: Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou 510080, People's Republic of China.
authors.forename: Liang
authors.initials: L
authors.lastname: Yongchun
authors.affiliation: Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou 510080, People's Republic of China.
authors.forename: Wanli
authors.initials: W
authors.lastname: Zhong
authors.affiliation: Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996, USA.
authors.forename: Peter K
authors.initials: PK
authors.lastname: Liaw