Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Dong Young Oh"'
Publikováno v:
Metals and Materials International. 12:307-315
A method to synthesize the dense silicide WSi2 and WSi2-xvol.%SiC composites within two minutes in one step from W, Si and C elemental powders was investigated. Simultaneous combustion synthesis and densification were carried out under the combined e
Publikováno v:
Journal of Alloys and Compounds. 395:174-180
Dense MoSi 2 –SiC composite was synthesized by high-frequency induction heated combustion synthesis method within 2 min in one step from elemental powders of Mo, Si and C. Simultaneous combustion synthesis and densification were carried out under t
Publikováno v:
Journal of Korean Powder Metallurgy Institute. 12:17-23
Dense -20vol.%SiC composite was synthesized by high-frequency induction-heated combustion synthesis(HFIHCS) method within 2 minutes in one step from elemental powder mixture of W, Si and C. Simultaneous combustion synthesis and densification were acc
Publikováno v:
Journal of Alloys and Compounds. 386:270-275
Dense WSi 2 –SiC composite was synthesized by high-frequency induction heated combustion synthesis (HFIHCS) method within 2 min in one step from powders of WC and Si. Simultaneous combustion synthesis and densification were accomplished under the c
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 22:197-203
A sintering method for the rapid sintering of a nanostructured hard metals in short time is introduced with a focus on the manufacturing potential of this novel high-frequency induction heated sintering (HFIHS) process. The advantage of this process
Publikováno v:
Materials Science and Engineering: A. 368:10-17
Tungsten carbide (WC) and dense WC–5 vol.% Co materials, with grain size of ∼1 μm, were synthesized by high-frequency induction heated combustion synthesis (HFIHCS) method in one step from elemental powders of W, C, and cobalt (Co) within severa
Publikováno v:
International Journal of Refractory Metals and Hard Materials. 22:41-49
WC and dense WC– x vol.%Co materials, with grain size of x vol.%Co composites were investigated. Also, the effect of the carbon ratio to the tungsten on the mechanical properties was researched. The hardness of the WC–Co composites decreased with
Publikováno v:
Sensors and Actuators A: Physical. 93:157-161
We present an oblique microstructure, a tetrahedral three-facet micro mirror, and its fabrication process with the inclined deep X-ray lithography (DXRL). The mirror has an equilateral triangular base of 100 μm length and mirror-like three side-face
Publikováno v:
Synthetic Communications. 31:2613-2617
2-Alkyl-3-phosphoryl chromanones and its thio-derivatives were synthesized by a tandem allyl-vinyl migration and cyclization of α-(o-hydroxybenzoyl)-allylic phosphonates which were readily produced from lithiated allylic phosphonates and salicylate.
Publikováno v:
Synthetic Communications. 30:2897-2902
Vinyl sulfones are synthesized in good yields by dehydration of β-hydroxy sulfones derived from β-bromo alcohols.