搜索结果: 1-14 共查到“理学 Spinel”相关记录14条 . 查询时间(0.093 秒)
Platinum-Group Elements Geochemistry and Chromian Spinel Composition in Podiform Chromitites and Associated Peridotites from the Cheshmeh-Bid Deposit, Neyriz, Southern Iran: Implications for Geotectonic Setting
Cheshmeh-Bid Chromitite trace elements platinum-group elements boninitic magma supra-subduction zone
2018/4/10
Dunite and serpentinized harzburgite in the Cheshmeh-Bid area, northwest of the Neyriz ophiolite in Iran, host podiform chromitite that occur as schlieren-type, tabular and aligned massive lenses of v...
Carbothermal Reduction Synthesis of Aluminium Oxynitride Spinel Powders at Low Temperatures,
2007/7/28
期刊信息
篇名
Carbothermal Reduction Synthesis of Aluminium Oxynitride Spinel Powders at Low Temperatures,
语种
英文
撰写或编译
作者
Li Yawei Li Nan , Yuan Runzhang
第一作者单位
刊物名称
Journal of the Materials Scie
页面
16(1997...
Effect of cooling rate on the electrochemical properties of solid-state synthesized spinel LiMn2O
2007/7/28
期刊信息
篇名
Effect of cooling rate on the electrochemical properties of solid-state synthesized spinel LiMn2O
语种
英文
撰写或编译
撰写
作者
Tao Li,Weihua Qiu,Hailei Zhao,Jingjing Liu.
第一作者单位
北京科技大学
刊物名称
Materials Let...
ZnVSb基压敏陶瓷中尖晶石相形成机理的研究（Formation Mechanism of Spinel in ZnVSb Based Varistor Ceramic）
ZnVSb 基压敏陶瓷 尖晶石 形成机理
2010/8/24
The formation mechanism of zinc-antimony spinel for V2O5 / Sb2O3 precursor, SbVO4 or Sb2O3 doped ZnVSb based varistor ceramics were studied by means of DSC-TGA and XRD techniques. The results show tha...
Diogenites as asteroidal cumulates: Insights from spinel chemistry
asteroidal cumulates spinel chemistry orthopyroxene
2012/3/31
The chemical composition of spinel was determined for a suite of 19 diogenites (orthopyroxenites)
thought to be from asteroid 4 Vesta. Previous studies (Fowler et al. 1994, 1995) of orthopyroxene
de...
In situ neutron diffraction study of non-convergent cation ordering in the (Fe3O4)1-x(MgAl2O4)x spinel solid solution
non-convergent cation ordering (Fe3O4)1-x(MgAl2O4)x spinel solid solution
2012/3/31
Non-convergent cation ordering in the (Fe O ) (MgAl O ) solid solution was investigated us-
ing in-situ time-of-flight neutron powder diffraction. The approach to equilibrium in a sample with
x = 0...
Thermodynamics and kinetics of cation ordering in MgAl2O4 spinel up to 1600 °C from in situ neutron diffraction
MgAl2O4 temperature to 1600C situ neutron diffraction
2012/3/30
Thetemperaturedependenceofthecationdistributioninsyntheticspinel(MgAl O )was2 4
determinedusingin-situtime-of-?ightneutronpowderdiffraction.Neutrondiffractionpat-
ternsofstoichiometricMgAl
O andsli...
The systematics of Cr3+ and Cr2+ partitioning between olivine and liquid in the presence of spinel
Cr3+ Cr2+ spinel
2012/3/31
The partitioning behavior of Cr into olivine in basaltic systems has been parameterized and can now be modeled over a wide range of redox conditions and liquid compositions.The Cr21/Cr31 in spinel-sat...
Formation of Spinel from a Hydrotalcite-Like Compound at Low Temperature: Reaction between Edges of Crystallites
Double Hydroxide Grinding Hydrotalcite Reconstruction Spinel Thermal Decomposition
2011/12/23
Abstract: The thermal decomposition behavior of hydrotalcite-like compounds (HTlcs) prepared by reconstruction of calcined HTlcs is described. From the results of X-ray diffraction (XRD), it seems tha...
Cation mixing in natural MgAl2O4 spinel: A high-temperature 27Al NMR study
Cation mixing MgAl2O4 spinel high-temperature 27Al NMR study
2012/4/6
ThepositionaldisorderofMg andAl cationsbetweenthetetrahedralandoctahedralsitesinnaturalMgAlO spinelhasbeeninvestigatedby AlMASNMRatroomtem-2 427peratureandin-situhigh-temperatureAlNMRspectroscopyupto1...
Interaction between exsolution microstructures and magnetic properties of the magnetite-spinel solid solution
Interaction exsolution microstructures magnetic properties magnetite-spinel solid solution
2012/4/1
Magnetic properties of exsolved samples of the (Fe304t(MgAlz04),_x solid solution weremeasured over the temperature range 4-923 K and were correlated with microstructuresobserved by transmission elect...
Direct oxygen measurements of Cr-rich spinel: Implications for spinel stoichiometry
Direct oxygen measurements Cr-rich spinel Implications spinel stoichiometry
2012/4/6
Theavailability ofa synthetic multilayercrystal and accurately calibrated oxide and silicate standards makeit possible to usethe electron microprobefor precisea analysis ofspinel. Arequirement ofthe a...
Magnetic properties of the magnetite-spinel solid solution: Curie temperatures, magnetic susceptibilities, and cation ordering
Magnetic properties magnetite-spinel solid solution Curie temperatures magnetic susceptibilities cation ordering
2012/4/5
Curietemperatures (Td ofthe (Fe304)x(MgA1204)1-xsolid solution have been deter-minedfrom measurementsofmagneticsusceptibility (x)vs.temperature. Thetrend in Te
vs.composition extrapolates to 0Katx =0...
Influence of Fe(II) on the Formation of the Spinel Iron Oxide in Alkaline Medium
Dissolution Ferrihydrite Maghemite Magnetite Mossbauer spectroscopy
2011/12/31
Fe(II) and Fe(III) in various proportions were coprecipitated by NH3 at pH ≈ 11. The Fe(II)/Fe(III) ratio (x) was varied from 0.10 to 0.50. After stabilization by aging at pH ≃ 8 in anaerobic co...