Materials Literature
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Highly uniform bilayered perovskite-spinel hybrid nanostructures were deposited on glass and LaNiO 3 -buffered (100) silicon substrates at almost-ambient temperatures via the liquid-phase deposition (LPD) method. Field-emission scanning electron microscopy (FE-SEM) and atomic force microscopy (AFM) evidenced that the…
We identify putative load-bearing structures (bridges) in experimental colloidal systems studied by confocal microscopy. Bridges are co-operative structures that have been used to explain stability and inhomogeneous force transmission in simulated granular packings with a range of densities. We show that bridges simil…
Abstract New phosphorus‐containing poly(ester‐imide)‐polydimethylsiloxane copolymers were prepared by solution polycondensation of 1,4‐[2‐(6‐oxido‐6H‐dibenz < c,e > < 1, 2 > oxaphosphorin‐6‐yl)]naphthalene‐bis(trimellitate) dianhydride with a mixture of an aromatic diamine (1,3‐bis(4‐aminophenoxy)benzene)…
4,4′-(1 E , 1′ E )-2,2′-(2-aminopyrimidine-4,6-diyl)bis(ethene-2,1-diyl)bis( N , N -dimethylaniline), APBSD, was synthesized by fusing 2-amino-4,6-dimethylpyrimidine with p- N , N -dimethylaminobenzaldehyde. Thin films of APBSD were prepared by the thermal evaporation technique in a vacuum of 10 −5 mbar on quartz subs…
Magnetic susceptibility measurements, magnetization and neutron diffraction results at low temperature for cobalt and manganese oxide spinel ceramics are presented. The Curie temperature varies similarly with the sample composition in ceramics and powders. The experimental molar Curie constant variation is explained b…
Abstract The wet chemical synthesis of organic molecule encapsulated Bi x Sb y Te 100‐ x ‐ y nanoparticles (NPs) has been demonstrated to be shape and composition controllable as a function of the organic capping species used, the particles serve as intriguing materials towards thermoelectric (TE) devices with enhance…
This study was carried out to produce and characterize B4C - TiB2 ceramics by spark plasma sintering. Initial B4C and TiB2 powders were mixed in ethanol solution with YSZ balls for 1 hour. Sintering was performed with 5, 10, 15 and 20 volume % TiB2 containing mixtures respectively in disc-shaped graphite dies. The app…
The ultra high temperature performance of ceramic-based complex structures may require the development of liquid-assisted joining techniques; this in turn requires the definition of the wettability of these materials by various metals over a wide range of compositions and temperatures. After a short description of the…
Epoxy composites filled with negative thermal expansion nanoparticles, Mn 3 (Cu 0.6 Si 0.15 Ge 0.25 )N, modified by a plasma treatment were prepared. Thermal expansion properties and thermal conductivities of the Mn 3 (Cu 0.6 Si 0.15 Ge 0.25 )N/ epoxy composites were investigated within the temperature range of 77—300…
Hot isostatic pressing (HIP) is a technology with wide applicability in consolidating calcined intermediate-level and high-level nuclear waste, especially with wastes that are not able to be readily processed by vitrification at reasonable waste loadings. The essential process steps during the HIP cycle will be outlin…
The projector augmented wave method is used within the Perdew–Burke–Ernzerhof form of generalized gradient approximation to investigate the effect of hydrostatic pressure on the structures of hafnium metal. The obtained phase transformation pressures and the elastic constants at zero pressure are in excellent agreemen…
This investigation deals with the detailed procedure for the extraction of microfibrils from raw bamboo. The microfibrils obtained from raw bamboo were characterized using scanning electron microscope and the average diameter of the fibrils was found to be 10 μm. These microfibrils were then incorporated into polyhydr…
Caudatin-2,6-dideoxy-3-O-methy-β-D-cymaropyranoside (CDMC), the C-21 steroidal glycoside recently extracted from the traditional Chinese medicinal plant, the root of Cynanchum auriculatum Royle ex Wight (Asclepiadaceae), has been shown to possess potent antitumor properties. However, the bioactivities of CDMC are stil…
A microporous silica thin film with low refractive index (low-n) of 1.27 and high Young's modulus of 19.5 GPa was obtained by sol-gel synthesis using hydroxyacetone catalyst with tetramethyl orthosilicate and water in ethanol. Transmission electron microscope images and nitrogen adsorption-desorption measurements show…
In an industrial seawater cooling system, the effects of three different antifouling treatments, viz. sodium hypochlorite (NaClO), aliphatic amines (Mexel®432) and UV radiation, on the characteristics of the fouling formed were evaluated. For this study a portable pilot plant, as a side-stream monitoring system and se…
The denomination ‘flexible’ is chosen in the professional jargon of refractories technology for materials able to bear relatively high strains without or with acceptable loss of strength. In many cases this term is equivalent to relatively low brittleness. Characterisation of brittleness based on fracture mechanical i…
Ballistic penetration of conically cylindrical steel projectile into 3D orthogonal woven composite (3DOWC) was investigated from finite element analyses and ballistic impact tests. Based on the observation of the microstructure of the 3DOWC, a microstructure model was established for finite element calculation. In thi…
Heusler alloys with nominal composition Ni 73− x Fe x Ga 27 ( x = 17, 18, 19, 20, 21, 22) were prepared by arc melting and subsequent homogenization by annealing. The magnetic properties of the alloys were studied to analyse the magnetic entropy change as a function of temperature. The maximum entropy change was obser…
The weathering performance of rice husk-filled high-density polyethylene (RHPE) and natural wood was investigated in this study. The injection molded RHPE, in column end-cap (CECap) shapes, was exposed to both natural and accelerated weathering attacks. The durability of RHPE was compared to Kempas wood (Koompassia ma…
Abstract A posteriori estimates of errors in quantities of interest are developed for the nonlinear system of evolution equations embodied in the Cahn–Hilliard model of binary phase transition. These involve the analysis of wellposedness of dual backward‐in‐time problems and the calculation of residuals. Mixed finite…