on 2020 cho Deoxidation

Deoxidation - an overview ScienceDirect Topics

Deoxidation of the melt plays an important role in the atomization process The oxygen content of water-atomized powder is a function of the free energy of the reaction of the metal with water vapor and also of the reaction kinetics DOSS process of deoxygenating by liquid Ca The DOSS process DeOxidation in Solid State

Surface reaction and deoxidation mechanism of titanium …

Oct · After deoxidation without pickling CaO and Ca(OH) peaks were detected CaO is a deoxidation by-product and Ca(OH) appears to be formed by the reaction of CaO with atmospheric moisture After pickling it was confirmed that the deoxidation by-products were removed as described above

Deoxygenation of Ti metal A review of processes in literature

Sep · Specifically Mg cannot reduce oxygen from Ti O solid solutions to less than wt O at K Ca also has a reduction limit at K of no less than wt ( ppm) Of note the discussions on the thermodynamic limit are based on the assumption that the activities of CaO MgO and condensed Ca Mg are thus the …

Surface reaction and deoxidation mechanism of titanium …

Oct · Deoxidation of beta-titanium was investigated by Ca-CaCl and Ca-CaF fluxes at to degrees C The content of oxygen in Ti was strongly dependent not only on the Ca potential but on the

Publications - Continuous Casting Consortium - U of I

Seong-Mook Cho Mingyi Liang Hamed Olia Lipsa Das and Brian G Thomas "Multiphase Flow-Related Defects in Continuous Casting of Steel Slabs" TMS th Annual Meeting Exhibition Supplemental Proceedings (Materials Processing Fundamentals) San Diego CA Feb - The Minerals Metals Materials Series Warrendale PA

Yongjin CHO Research profile

Yongjin Cho High-quality N-polar GaN p-n diodes are realized on single-crystal N-polar GaN bulk substrate by plasma-assisted molecular beam epitaxy The room-temperature current-voltage

Deoxidation of H tool steel with CaF-MgO-CaO-AlO …

Feb · Laboratory-scale experiments were performed to investigate the deoxidation of H tool steel with CaF-MgO-AlO-CaO-SiO slags at K The calculation of thermodynamics and kinetics was also verified through the experimental results The results show that Si - O reaction is the control reaction and with the increase of basicity of slag …

Preparing low-oxygen titanium powder by calcium

Đồng ở nhiệt độ nóng chảy cao hơn điểm nóng chảy của nó một chút làm cho nó có ánh hồng khi đủ ánh sáng sẽ làm cho nó rạng rỡ hơn với màu cam đỏ tóng) Tiếng Thái xài ทองแดง nghĩa là vàng đỏ vì đồng có nhiều đặc điểm giống vàng như rất dẻo và

Thermodynamic Consideration of Direct Oxygen …

Direct oxygen removal from titanium aluminide scraps by …

Jul · Abstract Titanium aluminum (TiAl) scraps with a high oxygen content were treated with yttrium (Y) in a liquid chemical deoxidization process for recycling The Gibbs free energy and the equilibrium constant of the deoxidization reaction were calculated and the effects of the yttrium content and the system pressure on the oxygen content in the

Simultaneous heteroepitaxial growth of SrO () and …

Aug · The results are showing that the D-structure appearing during silicon surface deoxidation induced by pulsed laser deposited SrO is a consequence of a complex interplay between SrO desorption SrO-induced deoxidation of Si () surface and epitaxial structural ordering of SrO deposited on silicon surface Experimental details

Recent advancement in deoxygenation of fatty acids via …

May · As shown in Fig a three fatty acids and a glycerol molecule can be formed via hydrolysis of ester groups in aqueous media In contrast two variant mechanisms are suggested which may occur in solvent-free conditions or in organic media The first pathway follows a β-elimination mechanism to furnish a fatty acid molecule and an …

Experimental Measurements and Numerical Analysis of …

Sep · The produced titanium hydride powder was classified as to μm size to conduct the experiment The classified powder was introduced to the vacuum heat treatment furnace together with calcium granules (Junsei Chemical Co Ltd purity ) as shown in Fig to carry out the deoxidation process The ratio of titanium and calcium was …

Agglomeration Characteristics of Various Oxide …

Review on desulfurization in electroslag remelting

Jan · Electroslag remelting (ESR) gives a combination of liquid metal refining and solidification structure control One of the typical aspects of liquid metal refining during ESR for the advanced steel and alloy production is desulfurization It involves two patterns i e slag-metal reaction and gas-slag reaction (gasifying desulfurization)

Pre‐Deoxidation of Layered Ni‐Rich Cathodes to Construct a …

Nov · The pre-deoxidation of NCM exhibits capacity retention after cycles at the current density of C between and V which is much larger than that of pristine NCM capacity retention of The strategy of pre-deoxidation of Ni-rich layered structure cathode to regulate the defect chemistry and surface structure

Molecular beam homoepitaxy on bulk AlN enabled by …

Apr · We compare the effectiveness of in situ thermal cleaning with that of Al-assisted cleaning of native surface oxides of bulk AlN for homoepitaxial growth by molecular beam epitaxy Thermal deoxidation performed at ° C in vacuum results in voids in the AlN substrate On the other hand Al-assisted deoxidation at ≈ ° C results in high …

Deoxidation of Titanium Using Cerium Metal and Its …

Chloro-deoxidation Behavior of Titanium Powder with SnCl

Apr · Powder metallurgy (PM) offers cost-effective potential for manufacturing titanium and titanium alloys High oxygen content on titanium powder surface is a key problem affecting the mechanical properties of PM Ti alloys Therefore this study proposes a chloro-deoxidation method to reduce the oxygen content of titanium powder via …

The Effects of Sports Drinks During High-Intensity …

Experimental Measurements and Numerical Analysis of Al Deoxidation …

The Al deoxidation equilibrium in molten Fe Cr Ni alloy was experimentally determined at and K A thermodynamic assessment based on the sub-regular solution model using a Redlich-Kister type polynomial was carried out In the Fe Ni Al O Fe Cr Al O and Fe Cr Ni Al O systems Fe Al Ni Al Cr Al and Fe

Frontiers Liquid Inclusion Collision and Agglomeration in …

Aug · This work addresses conflicting results in the literature regarding liquid inclusion agglomeration To assess whether liquid calcium aluminates do agglomerate in liquid steel laboratory experiments were performed melting electrolytic iron deoxidizing the melt with aluminum and subsequently calcium treating the deoxidation products …

Surface and internal deoxidation behavior of titanium …

Dec · Surface and internal deoxidation behavior of titanium alloy powder deoxidized by Ca vapor Comparison of the deoxidation capability of solid solution and intermetallic titanium alloys Gye-Hoon Cho Investigation Hankwon Chang Methodology Data curation Hee Dong Jang Methodology Resources Article Show …

Chloro-deoxidation Behavior of Titanium Powder …

Surface and internal deoxidation behavior of titanium …

Dec · Fig shows the variation in the O concentration of Ti alloy powders before and after deoxidation according to the particle size of μm As the particle size decreased the O concentration of all Ti alloy powders increased The O concentration of the Ti-Al-V alloy powder before deoxidation was increased from wt to …

Ultimate Deoxidation Method of Titanium Utilizing …

Dec · The calculated deoxidation limit of Ti using available thermodynamic data in the literature at K ( °C) is ppm O in the Y Y O equilibrium and ppm O in the Y YOCl YCl equilibrium (Point A Figure ) when the activities of the stable chemical species are unity Furthermore Figure shows the deoxidation limit in Ti when