Bi Ling Wu

• National Kaohsiung University of Science and Technology (NKUST)

A series of niobates LiBa4Nb3-xTaxO12 (x=0, 1, 2) was synthesized by high temperature solid-state reaction in the L2O-BaO-M2O5 (M=Nb, Ta) system. The phase compositions, microstructure, and photocatalytic properties of the compounds were characterized. The photocatalytic degradation of acid red was carried out under ultraviolet lamp, using the abov...

In present work, undoped and Co2O3-doped Ba4Eu2Fe2Nb8O30 ceramics were fabricated by routine solid state method. Wide temperature range measurement shows two kinds of dielectric peaks. The low-temperature peak attributes to ferroelectric-paraelectric phase transition. The high-temperature peak is affected greatly by Co2O3 additives. With increasing...

A new niobate Ba3Nd2Ti2 Nb2O15 was synthesized by high temperature solid state reaction in the BaO-Nd2O3-TiO2- Nb2O5 system. The chemical compositions, crystal structure, microstructure, and microwave dielectric properties of the new compound were characterized. Ba3Nd2Ti2 Nb2O15 crystallizes in trigonal system with space group P3 ml (164) and latti...

High dielectric constant and low loss ceramics with composition Ba2La3Ti3TaO15 have been prepared by a conventional solid-state ceramic route. This compound adopts A(5)B(4)O(15) cation-deficient hexagonal perovskite structure. The dielectric properties of dense ceramics sintered in air at 1520 degrees C have been characterized at microwave frequenc...

Two new niobates A5LaSn3Nb7O30 were synthesized in the AO-La2O3-SnO2-Nb2 O5(A=Ba,Sr)system by high temperature solid-state reaction. The crystal structure, microstructure and dielectric properties were investigated by X-ray powder diffraction, scanning electron microscope and dielectric measurements. The results showed that A5LaSn3 Nb7O30 belong to...

A new niobate compound Ba4LaTiNb3O15 has been synthesized and characterized. Through Rietveld refinement of X-ray powder diffraction data, Ba4LaTiNb3O15 is identified as the A5B4O15 type cation-deficient perovskites with space group of P3m1(164) and lattice constants a=0.57238(1) nm, c=1.169 48(1) nm, V=0.331 81(1) nm3, and Z=1. The crystal structu...

The influence of SPS sintering temperature on microstructure and magnetic properties of the sintering bulk alloy of melt quenching Fe70Cr8 Mo2Si5B15 powders by ball milling and MA Fe73.5Cu1 Nb3Si13.5B9 and Fe80Co4 Nb7B9 nanocrystalline powders was studied. The results show that (1) under 30MPa/5min conditions, the relative densities of bulk alloys...

The influence of spark plasma sintering and high-pressure sintering technique on microstructure and magnetic properties of bulk alloys of MA Fe73.5Cu1Nb3Si13.5 B9 nanocrystalline powder were investigated. The results show that after milling for 70 h, the single phase α-Fe nanocrystalline supersaturate solid solution powder with average grain size 9...

Microstructures and magnetic properties of Fe84Nb7B9, Fe80Ti8B12 and Fe32Ni36 (Nb/V)7Si8 B7 powders and their bulk alloys prepared by mechanical alloying (MA) method and hot-press sintering were studied. The results show that: 1) After MA for 20 h, nanocrystalline bcc single phase supersaturated solid solution forms in Fe84 Nb7B9 and Fe80Ti8B12 all...

In order to study the dispersion stabilization characteristics and particle indication of nano-composite WC-Co powder, the powder was dispersed by using quantitative dispersing agent and medium, then the BET surface area was determined by liquid nitrogen adsorption. Particle size and distribution values were obtained from photo correlation spectros...

A new series of niobates A6n + [Bxm + Nb12-x] Nb4O42 (A = K, Ba; B = Ni, Cr, Fe, Ti and Zr) has been synthesized by solid state reaction and the flux method. The morphology, optical properties and chemical stability of the new compounds were studied. The composition of the compounds were determined by chemical analyses and electron probe X-ray micr...

A new niobate crystal was synthesized for the first time in BaO-Na2 O-Co2 O-Co2 O3-Nb2 O5 system by solid state reaction and the flux method. The new compound was studied by X-ray diffraction, electron probe, X-ray microanalysis, chemical analysis and SEM. The result of X-ray diffraction shows that Ba5NaCo0.5Nb9.5O30 belongs to tetragonal tungsten...

A new niobate K3Sr3MoNb9O30 was synthesized for the first time by solid state reaction, and was characterized by EPMA, XRD, SEM and DTA. The X-ray powder diffraction data of K3Sr3MoNb9O50 was first reported. The results show that K3Sr3MoNb9O30 belongs to tetragonal tungsten bronze (TTB) structure with unit cell parameters alpha = 12. 4292(5) Angstr...

A niobate was synthesized by doping Bi3+ in the ternary system BaO-Na2O-Nb2O5. The crystal structure was determined by X-ray powder diffraction, and it belongs to tetragonal tungsten bronze structure at room temperature with unit cell parameters a = 1.24777 (2) nm, c = 0.39266(1) nm, α = β = γ = 90°. Measurements of dielectric properties indicate t...

The wear performances of fine grain alumina ball adding diopside as fluxing agent are reported for the first time in this paper. The ball (average g grain size 3μm) exhibits excellent toughness and low wear rates. Ploughing grooves and traces of micro-cutting occur at the place with no pore. And the wear process is mainly caused by plastic deformat...

A new niobate Sr6FeNb9O30 was synthesized in the ternary system SrO-Fe2O3-Nb2O5 for the first time. The crystal structure was determined by X-ray diffraction and dielectric measurement, and it belongs to orthorhombic tungsten bronze structure at room temperature with unit cell parameters a=1. 7554(1) nm, b=1. 7534 (1) nm, c=O. 77870(6) nm. Dielectr...

In this paper, the main mechanism and key technology of preparation of α-alumina grinding media were investigated and reported. The natural minerals of disposed, quartz and magnetite were mixed, sintered and ground to 4 μm with other fluxes acting as composite fluxes. The composite fluxes have better invading effect to α-alumina at high temperature...

A new tantalate compound KSr2Ta3O10 was synthesized by solid state reaction for the first time in the ternary system K2O-SrO-Ta2O5, and its single crystals were prepared using flux method. The chemical compositions, crystal structure, optical property, density and melting point of the new compound were characterized by EPMA, XRD, DTA and so on. KSr...

A new niobate Sr6Ti7Nb9O42 was synthesized sized for the first time by solid state reaction in SrO-TiO2-Nb2O5 ternary system. The new compound was characterized by EPMA, XRD, SEM and DTA. The X-ray powder diffraction data of Sr6Ti7Nb9O42 were firstly reported in the paper. Sr6Ti7Nb9O42 crystallizes the hexagonal system with unit cell parameters a =...

A new compound Sr6Sn2Nb8O30 was found in the ternary system of SrO-SnO2-Nb2O5. The transparent colorless crystal with needle-like shape can be grown by flux method, The crystal structure of new compound was determined by X-ray diffraction, and its belongs to tungsten bronze structure. Sr6Sn2Nb8O30 crystallizes in orthorhombic system with unit cell...

A new compound K6Ti0.67Nb15.33O42 was prepared for the first time by solid state reaction in K2ONi2O3-Nb2O5 ternary system. The new compound was characterized by electron prober X-ray powder diffraction and DTA. The result of X-ray powder diffraction shows that K6Ti0.67Nb15.3O42 crystallizes the hexagonal system with unit cell parameters a = 9. 134...

A new niobate compound K6Zr2Nb14O42 was synthesized by solid state reaction for the first time. The chemical compositions, crystal structure, optical property, solubility, density and melting point of the new compound were characterized by EPMA, TEM, XRD, DTA and so on. K6Zr2Nb14O42 crystallizes the hexagonal system with unit cell parameters a = 0....

A new niobate compound KSr2Nb3O10 was synthesized for the first time. The chemical compositions , crystal structure, optical property, density and melting point of the new compound were characterized by EPMA, TEM, XRD, DTA and so on. KSr2Nb3O10 crystallizes the orthorhombic system with unit cell parameters a = 0. 7816 (1) nm, b = 0. 7764 (2) nm, c...

A new compound Ba6Ti7Nb9O42 was prepared for the first time by solid state reaction in BaOTiO2-Nb2O5 ternary system. The X-ray powder diffraction data of the title compound was determined. Ba6Ti7Nb9O42 Crystallizes in the hexagonal system with unit cell parameters a = 9.0527 (4) Angstrom, c=11.790(1) Angstrom, and space group P6(3)/mcm (193), z = 1...

A new compound K 6FeNb 15O 42 was prepared for the first time by solid state reaction in K 2O-Fe 2O 3-Nb 2O 5 ternary system. The X-ray powder diffraction data of the title compound was measured. K 6FeNb 15 O 42 crystallizes in the hexagonal system with unit cell parameters a=9. 1320(4) Å, c=12. 0670(9) Å, and space group P63/mcm (193), z=1. The ca...

We identified a father and son with neurofibromatosis type 1 (NF1) due to a deletion of the entire NF1 gene detected by fluorescence in situ hybridization (FISH). As is the case for others reported to have such large deletions, father and son had severe NF1, including a large number of cutaneous neurofibromas, facial anomalies, large hands, feet, a...

Allele-specific replication differences have been observed in imprinted chromosomal regions. We have exploited this characteristic of an imprinted region by using FISH at D15S9 and SNRPN (small nuclear ribonucleo protein N) on interphase nuclei to distinguish between Angelman and Prader-Willi syndrome patient samples with uniparental disomy of chro...

We describe the clinical manifestations and molecular cytogenetic analysis of three patients with a similar distal deletion: del(8)(p23.1). Case 1: A nine-year-old girl who was the product of a normal pregnancy, with family history of recurrent miscarriages. She has an ASD, development delay and dysmorphic features. Case 2: A three-month-old female...