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%Y2O3 (molar fraction) nanocrystalline powder had good thermal shock performance in vacuum[16]. After water quenching from high temperatures, the APS nanostructured TBC failed mainly between two vertical cracks in the top coat[12]. The thermal shock performance of the nanostructured TBC was enhanced, because it had high porosity and uniform pore distribution without penetrating and parallel cracks......
J. Cent. South Univ. (2012) 19: 887-891 DOI: 10.1007/s11771-012-1088-0 Fabrication and plasma arc thermal shock resistance of HfB2-based ultra high temperature ceramics WENG Ling(翁凌)1, HAN Wen-bo(韩文波... and the thermal shock resistances were evaluated by plasma arc heater. The results indicate that the composite with AlN as sintering additive has a denser and finer microstructure than composite without......
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STUDY ON THE SHOCK WAVE CRYSTALLIZATION OF AMORPHOUS ALLOYS BY DSC H.Wang1,Z.Q.Liu1,Q.J.Liu1,H.Y.Zhao1,J.D.Kan1 (1.Department of Materials Science and Engineering, Yunnan University, Kunming 650091, China) Abstract:Shock wave and annealing crystallization of amorphous alloys FeSiB, FeMoSiB andFeCuNbSiB were studied by isothermal and non-isothermal DSC technique. It wasfound that the shock wave......
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in Fig.7(b). Fig.7 TEM images showing microstructure of bulk nanostructured Al-10.0Zn-3.0Mg-1.8Cu alloy: (a) Fine-grained area; (b) Sub-micron-grained zone Although SPS is a hopeful consolidation...; Abstract: Nanocrystallized Al-10.0%Zn-3.0%Mg-1.8%Cu (mass fraction) alloy powder was prepared by cryomilling, and then the nanostructured powder was consolidated into bulk material by spark plasma......
Article ID: 1003-6326(2005)03-0612-03 Deformation of Zr41Ti14Cu12.5Ni10Be22.5 bulk amorphous alloy under isobaric pressure in super-cooled liquid region ZHANG Ke-qin(张克勤)1, LU Qi... with high cooling rate(106K/s) was first proposed by Duwez et al[1] in 1960. Since then, a considerable number of metallic glass and nanostructured systems have been prepared by this technique[2-4] and some......
been proposed with the purpose of increasing gold and silver dissolution rate[4-9]. Unfortunately, none of these oxidants has been successfully practiced, probably due to their high cost... of ferricyanide-cyanide solution can be maintained at a relatively high level due to its high solubility in cyanide solution. In this work, the dissolution of gold and silver sulfide in ferricyanide-cyanide......
of the material on the surface of the opaque film to vaporize. The rapidly expanding plasma is confined against the surface of the material by the transparent overlay, creating a high surface pressure that propagates into the material. The resulting shock wave plastically deforms the material below the surface to a depth at which the peak stress no longer exceeds the Hugoniot elastic limit of the metal......