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Related Concept Videos

Washing, Drying, and Ignition of Precipitates00:52

Washing, Drying, and Ignition of Precipitates

After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
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The fineness modulus (FM) of aggregate is a numerical index that measures the coarseness or fineness of the particles. It is calculated by adding the cumulative percentages of aggregate retained on each of a specified series of sieves and dividing the sum by 100.
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Liquid-cell Transmission Electron Microscopy for Tracking Self-assembly of Nanoparticles
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Al48.18Cr22.78Fe4.04Si3.

Xinyu Liang1, Changzeng Fan1,2, Bin Wen1

  • 1State Key Laboratory of Metastable Materials Science and Technology Yanshan University,Qinhuangdao 066004 People's Republic of China.

Iucrdata
|January 19, 2026
PubMed
Summary
This summary is machine-generated.

High-pressure sintering unexpectedly synthesized a novel intermetallic compound, Al48.18Cr22.78Fe4.04Si3. This new material adopts a specific crystal structure, revealing unique atomic arrangements.

Keywords:
crystal structuredeca­gonal quasicrystalhigh-pressure sinter­inginter­metallic

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Area of Science:

  • Materials Science
  • Crystallography
  • Solid-state Chemistry

Background:

  • Intermetallic compounds are crucial in advanced material applications.
  • Understanding synthesis pathways and crystal structures is key to material design.

Purpose of the Study:

  • To investigate the synthesis of intermetallic compounds under high-pressure sintering.
  • To characterize the crystal structure and atomic arrangement of the synthesized compound.

Main Methods:

  • High-pressure sintering of an Al-Cr-Fe-Si mixture.
  • X-ray diffraction and crystallographic analysis for structure determination.

Main Results:

  • Unexpected synthesis of Al48.18Cr22.78Fe4.04Si3, distinct from the initial composition.
  • The compound adopts the Cr0.88Fe0.12Ga structure type in space group R3m.
  • Detailed refinement of atomic site occupancy factors for Al, Cr, and Fe.

Conclusions:

  • High-pressure sintering is a viable route for synthesizing novel intermetallic phases.
  • The determined crystal structure provides insights into atomic bonding and interactions in Al-Cr-Fe-Si systems.
  • This discovery expands the known phase space for complex intermetallic compounds.