Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Hua Zhang"'
Autor:
Kai-fei Wang, Guo-Hua Zhang
Publikováno v:
Transactions of Nonferrous Metals Society of China. 30:1697-1706
High-purity ultrafine W or WC powder was prepared via a two-step process composed of the carbothermic pre-reduction of WO2.9 and the following deep reduction with H2 or carbonization with CH4+H2 mixed gases. The effects of C/WO2.9 molar ratio and tem
Publikováno v:
Transactions of Nonferrous Metals Society of China. 29:1776-1783
High purity vanadium nitride (VN) powders were prepared via a two-step process using vanadium trioxide (V2O3) as the raw material. The V2O3 was firstly reduced at 873 K in Ar atmosphere via magnesiothermic reduction reaction to get the mixture of V a
Publikováno v:
Transactions of Nonferrous Metals Society of China. 28:2294-2306
In order to describe and predict the kinetic process of discontinuous dynamic recrystallization (DDRX) during hot working for metals with low to medium stacking fault energies quantitatively, a new physically-based model was proposed by considering t
Publikováno v:
Transactions of Nonferrous Metals Society of China. 26:994-1002
Pulsed laser welding was used in joining pure aluminum to stainless steel in a lap joint configuration. It is found that the mechanical properties of the laser joints were closely correlated with the bead geometry, i.e., penetration depth. In order t
Publikováno v:
Transactions of Nonferrous Metals Society of China. 24:1352-1364
The effects of Y on the microstructure and mechanical properties of Mg–6Zn–1Mn alloy were investigated. The results show that the addition of Y has significant effect on the phase composition, microstructure and mechanical properties of Mg–6Zn
Publikováno v:
Transactions of Nonferrous Metals Society of China. 23:916-922
The effects of strain rate on microstructure and formability of AZ31B magnesium alloy sheets were investigated through uniaxial tensile tests and hemispherical punch tests with strain rates of 10−4, 10−3, 10−2, 10−1 s−1 at 200 °C. The resu
Autor:
Yong-tao Yang, Ke Zhang, Qi Song, Cheng-hua Zhang, Ren-hong Yu, Hong-xing Xu, Dong Xu, Xiaonong Cheng
Publikováno v:
Transactions of Nonferrous Metals Society of China. 22:s127-s132
Dielectric properties and varistor performance of sol–gel prepared Ni-doped calcium copper titanate ceramics (CaCu 3 Ni x Ti 4 O 12+ x , x =0, 0.1, 0.2, 0.3) were investigated. SEM and XRD were used in the microstructural studies of the specimens a
Publikováno v:
Transactions of Nonferrous Metals Society of China. 22:2087-2091
The microstructure evolution of Al–Zn–Mg–Cu alloy was studied by differential scanning calorimetry (DSC) and transmission electron microscopy (TEM) during different rate cooling processes. Based on the DSC results, the kinetics analysis was car
Publikováno v:
Transactions of Nonferrous Metals Society of China. 21:2633-2637
YBa 2 Cu 3 O 7- x (YBCO) superconducting film was fabricated on {001} LaAlO 3 (LAO) substrate by pulse laser deposition (PLD), and its microstructure was examined by high resolution X-ray diffraction technology (HRXRD), such as pole figure, rocking c
Publikováno v:
Transactions of Nonferrous Metals Society of China. 21:1061-1067
3Gd 2 O 3 -3Yb 2 O 3 -4Y 2 O 3 (mole fraction, %) co-doped ZrO 2 (GY-YSZ) thermal barrier coatings (TBCs) were produced by electron beam physical vapor deposition (EB-PVD). The oxidation behavior of GY-YSZ at 1 050 °C was investigated using impedanc