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lanthanum chromite chromate

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US5169811A - Beneficiated lanthanum chromite for low ...

A lanthanum chromite ceramic powder mixture that consists essentially of 1 mol of LaCr 1-x M x O 3, where M is a divalent metal selected from the group consisting of magnesium, calcium and mixtures thereof and x ranges from 0.03 to 0.3; y mols of B 2 O 3, where y ranges from 0.005 to 0.04; and z mols of La 2 O 3, where the ratio z/y ranges from 1.1 to 3.

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Method of making highly sinterable lanthanum chromite ...

A highly sinterable powder consisting essentially of LaCrO[sub 3], containing from 5 weight % to 20 weight % of a chromite of dopant Ca, Sr, Co, Ba, or Mg and a coating of a chromate of dopant Ca, Sr, Co, Ba, or Mg; is made by (1) forming a solution of La, Cr, and dopant; (2) heating their solutions ...

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Lorad Chemical Corporation

Calcium Lanthanum Sulfide, InfraRed Window Quality Powder Available sintering/Hot-Pressing, CaLa 2 S 4, CALCIUM LANTHANUM SULFIDE POWDER Calcium Lanthanum Chromite Calcium MetaPhosphate, High Purity, Infrared Fiber Optics

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Battle for Incheon: Operation Chromite (2016) - IMDb

Directed by John H. Lee. With Liam Neeson, Jon Gries, Josie Bissett, Justin Rupple. A team of spies is sent into Incheon to gain intelligence on North Korean positions ahead of the invasion by UN forces.

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Korean War: Operation Chromite - historynet

Douglas MacArthur's admirers and detractors alike admitted to his uncanny predilection for victory, never so evident than at his landing at Inchon in the Korean War, code-named 'Operation Chromite. The Inchon landing offered the promise of relieving battered United Nations defenders on the Pusan ...

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Lanthanum chromite-based materials for solid oxide fuel ...

The conductivities of strontium- and calcium-doped lanthanum chromite in air at 1273 K are shown in Fig. 1, Fig. 2, respectively.Although there is some scatter among the reported values, which could be due to variation in factors such as porosity, there is a general increase with increase in strontium content, and this trend is indicated by the solid line.

Chromate and dichromate - WikiVisually

In aqueous solution, chromate and dichromate anions exist in a chemical equilibrium.. 2 CrO 2− 4 + 2 H + ⇌ Cr 2 O 2− 7 + H 2 O. The predominance diagram shows that the position of the equilibrium depends on both pH and the analytical concentration of chromium. The chromate ion is the predominant species in alkaline solutions, but dichromate can become the predominant ion in acidic solutions.

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Preparation of lanthanum chromate and lanthanum chromite ...

May 16, 1989 · The development of lanthanum chromite powders capable of sintering to full density, i.e., 95% of theoretical density, below 1700° C. is critical to reduce Cr volatilization problems and improve fuel cell fabrication. One example of a method of manufacturing lanthanum chromite (LaCrO 3) .

  • Authors: William L Olson · Beili Li · Jean YamanisAffiliation: AlliedsignalGet Price

Development of lanthanum chromites-based materials for ...

1 INTRODUCTION. The perovskite (ABO 3-type) lanthanum chromite (LaCrO 3) and especially doped LaCrO 3-based ceramics have recently received much interest as high-temperature electrode materials and solid oxide fuel cell interconnects, because it is a p-type electronic conductor in oxidizing conditions and is stable to low oxygen partial pressures [1-3].

  • Published in: Materia-rio De Janeiro · 2008Authors: J G M Furtado · R N OliveiraAbout: Solid oxide fuel cellGet Price

Chromium – Lanthanum – Oxygen | SpringerLink

Chromium – Lanthanum – Oxygen. Refractory Metal Systems: Phase Diagrams, Crystallographic and Thermodynamic Data ... "High Temperature Radiocrystallographic Study of Lanthanum Chromite" (in French), Compt. Rend. Acad. Sci., Ser. C, 276, 1167–1169 ... "Heat Capacity and Thermodynamic Properties of Lanthanum(III) Chromate(III) LaCrO 3 ...

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STABILITY CHROMITE INTERCONNECTIONS IN DUAL .

and electrical stability of the interconnect (typically a doped lanthanum chromite) in the dual (oxidizing and reducing atmosphere) SOFC environment. The reducing or fuel side may experience oxygen partial pressures (P(02)) from to have P(0z) from materials to lanthanum or yttrium chromites. In the past decade, much work has centered on

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Lanthanum chromite | CAS 12017-94-6 | SCBT - Santa Cruz ...

Buy Lanthanum chromite (CAS 12017-94-6), a product for proteomics research, from Santa Cruz. Molecular Formula: LaCrO3, Molecular Weight: 238.90

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Chromate and dichromate - WikiVisually

In aqueous solution, chromate and dichromate anions exist in a chemical equilibrium.. 2 CrO 2− 4 + 2 H + ⇌ Cr 2 O 2− 7 + H 2 O. The predominance diagram shows that the position of the equilibrium depends on both pH and the analytical concentration of chromium. The chromate ion is the predominant species in alkaline solutions, but dichromate can become the predominant ion in acidic solutions.

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Lanthanum Chromite - Rusgems

We have experience of the industrial synthesis of lanthanum chromite, a feedstock for ceramic heater manufacturing.

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Aluminum Chromate Conversion Coating | Advanced Plating ...

Aluminum chromate conversion coatings, often referred to as chemical film or under the trade names Alodine or Irridite, produce a thin coating in the range of 0.00001-0.00004 inches in thickness. Aluminum chromate conversion coatings are amorphous in structure with .

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Sol-gel synthesis of lanthanum chromite powder - ScienceDirect

Sol-gel synthesis of lanthanum chromite powder 1031 14. Brixner, L. H. & Moore, E. P., Single-crystal refine- Hilpert, K., Vaporization studies of LaCrO, Thermo- ment of the structure of LaOCl. Acta Cryst., C39 (1983) dynamic activities and thermodynamic properties for the 1316. formation.

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Chromium: The mineralogy of Chromium - mindat

Most widespread minerals containing Chromium; This list of minerals containing Chromium is built from the mindat locality database. This is based on the number of localities entered for mineral species and is therefore slanted towards minerals interesting to collectors with less coverage of common rock-forming-minerals so it does not give an undistorted distribution of Chromium mineral ...

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(PDF) Tape casting of strontium and cobalt doped lanthanum ...

Tape casting of strontium and cobalt doped lanthanum chromite suspensions. Journal of the European Ceramic Society, 2010. Isabel Santacruz

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US5143751A - Method of making highly sinterable lanthanum ...

A highly sinterable powder consisting essentially of LaCrO 3, containing from 5 weight % to 20 weight % of a chromite of dopant Ca, Sr, Co, Ba, or Mg and a coating of a chromate of dopant Ca, Sr, Co, Ba, or Mg; is made by (1) forming a solution of La, Cr, and dopant; (2) heating their solutions; (3) forming a combined solution having a desired ratio of La, Cr, and dopant and heating to reduce ...

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Advanced Materials for Solid Oxide Fuel Cells

Approximately 0.15 gm of lanthanum chromite was placed into a teflon pressure vessle with a solution composed of equal parts of vanadium sulfate and sulfuric acid (36N). The pressure vessle was placed into a stainless steel containment vessel and heated at 245°C until the chromite sample dissolve (1 to 6 .

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Chromite Mineral Data - webmineral

Visit our Advertisers for Chromite : Dakota Matrix Minerals Google Search for Chromite John Betts Fine Minerals Search for Chromite McDougall Minerals Google Search for Chromite Weinrich Minerals, Inc. Google Search for Chromite. Ask about Chromite here : Ask-A-Mineralogist from the Mineralogical Society of America Mindat's Discussion Groups

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