Showing papers by "H.F. Zhang published in 2012"
TL;DR: It is demonstrated that a series of superconductors with enhanced Tc = 30∼46 K can be obtained by intercalating metals, Li, Na, Ba, Sr, Ca, Yb, and Eu in between FeSe layers by the ammonothermal method at room temperature, providing a new starting point for studying the properties of thesesuperconductors and an effective synthetic route for the exploration of new superconductor exploration.
Abstract: Observation of superconductivity at 30 ∼ 46K in A x Fe 2 Se 2 (A = Li, Na, Ba, Sr, Ca, Yb, and Eu)
282 citations
TL;DR: In this paper, a β-NiAl coating was fabricated on γ-TiAl through a two-step process: electrophoretic deposition of particles of Ni and Al and then hot pressing (HP).
Abstract: γ-TiAl is attractive for high temperature application, but requires a coating to resist oxidation. In this work, a β-NiAl coating was fabricated on γ-TiAl through a two-step process: electrophoretic deposition (EPD) of particles of Ni and Al and then hot pressing (HP). The β-NiAl coating was insignificantly degraded by interdiffusion with the γ-TiAl substrate and formed an adherent alumina scale by adding a small amount of Y 2 O 3 particles during oxidation at 900 °C.
24 citations
TL;DR: In this paper, the effects of introducing Ce and C atoms on the Curie temperature (TC), the magnetic entropy change (ΔSM), and the hysteresis loss have been investigated in the NaZn13-type LaFe11.5Si1.5 compound.
21 citations
TL;DR: In this article, the Curie temperature T-C can be adjusted to the room temperature by changing the carbon/hydrogen content, which leads to a remarkable reduction of thermal/magnetic hysteresis.
18 citations
TL;DR: In this paper, magnetization and heat capacity measurements of the intermetallic Ho3Al2 compound are investigated by magnetization, heat capacity, and magnetocaloric effects of two successive magnetic transitions, a spin-reorientation (SR) transition at T-SR=31 K followed by a ferromagnetic (FM) to paramagnetic (PM) transition in T-C=40 K.
16 citations
TL;DR: In this article, the influence of structural relaxation on wetting behavior of molten In-Sn alloy on Cu40Zr44Al8Ag8 bulk metallic glass (BMG) was studied using the sessile-drop method at isothermal condition in high vacuum.
12 citations
TL;DR: In this paper, the magnetic properties and magnetocaloric effects of intermetallic Gd 1− x Ho x NiIn (x = 0−1) compounds have been evaluated by magnetization and heat capacity measurements.
6 citations
TL;DR: In this article, the process of amorphisation in the mechanically alloyed Al65Cu20Ti15 powder and the stability of the amorphous phase during ball milling were investigated.
Abstract: Mechanical alloying of Al65Cu20Ti15 powder blend has been carried out by high energy vibrating ball mill. The process of amorphisation in the mechanically alloyed Al65Cu20Ti15 powder and the stability of the amorphous phase during ball milling were investigated. Almost completely amorphous powder was achieved after 25 h ball milling. Examination of the microstructural constituents using X-ray diffraction and transmission electron microscopy shows that the amorphisation process was controlled by the transformation of both Al based solid solution and intermetallic compounds (Al2Cu, Cu9Al4 and AlCu2Ti). However, that prolonging the ball milling time to 30 h led to the appearance of Cu9Al4, the Al65Cu20Ti15 composite comprising nanocrystalline and amorphous phases could be stable after 50 h ball milling.
4 citations