Advertisement

Topics

High throughput crystal structure and composition mapping of crystalline nanoprecipitates in alloys by transmission Kikuchi diffraction and analytical electron microscopy.

08:00 EDT 28th March 2019 | BioPortfolio

Summary of "High throughput crystal structure and composition mapping of crystalline nanoprecipitates in alloys by transmission Kikuchi diffraction and analytical electron microscopy."

Statistically significant crystal structure and composition identification of nanocrystalline features such as nanoparticles/nanoprecipitates in materials chemistry and alloy designing using electron microscopy remains a grand challenge. In this paper, we reveal that differing crystallographic phases of nanoprecipitates in alloys can be mapped with unprecedented statistics using transmission Kikuchi diffraction (TKD), on typical carbon-based electron-transparent samples. Using a case of multiphase, multicomponent nanoprecipitates extracted from an improved version of 9% chromium Eurofer-97 reduced-activation ferritic-martensitic steel we show that TKD successfully identified more than thousand MC, MX, MC and MX (M=Fe, Cr, W, V, Ta; X = C, N) nanoprecipitates in a single scan, something that is currently unachievable using a transmission electron microscope (TEM) without incorporating a precision electron diffraction (PED) system. Precipitates as small as ∼20-25 nm were successfully phase identified by TKD. We verified the TKD phase identification using high-resolution transmission electron microscopy (HRTEM) and convergent beam electron diffraction (CBED) pattern analysis of a few precipitates that were identified by TKD on same sample. TKD study was combined with state-of-art analytical scanning transmission electron microscopy (STEM)-energy dispersive X-ray (EDX) spectroscopy and multivariate statistical analysis (MVSA) which provided the complete crystal structure and distinct chemistries of the precipitates in the steel in a high throughput automated way. This technique should be applicable to characterizing any multiphase crystalline nanoparticles or nanomaterials. The results highlight that combining phase identification by TKD with analytical STEM and modern data analytics may open new pathways in big data material characterization at nanoscale that may be highly beneficial for characterizing existing materials and in designing new materials.

Affiliation

Journal Details

This article was published in the following journal.

Name: Ultramicroscopy
ISSN: 1879-2723
Pages: 33-43

Links

DeepDyve research library

PubMed Articles [21729 Associated PubMed Articles listed on BioPortfolio]

The Effect of Crystallinity and Crystal Structure on the Immersion Freezing of Alumina.

Determining the factors that constitute an efficient ice nucleus is an ongoing area of research in the atmospheric community. In particular, surface characteristics such as functional groups and surfa...

High-throughput continuous rotation electron diffraction data acquisition software automation.

Single-crystal electron diffraction (SCED) is emerging as an effective technique to determine and refine the structures of unknown nano-sized crystals. In this work, the implementation of the continuo...

Experimental Observation of Crystal-Liquid Coexistence in Slit-Confined Non-Polar Fluids.

Films of carbon tetrachloride (CCl4) confined in slit geometry between two flat diamond substrates down to a few tens of Angstroms are studied by combining X-ray reflectivity with in-plane and out-of-...

Autophagy Pathway Mapping to Elucidate the Function of Novel Autophagy Regulators Identified by High-Throughput Screening.

Autophagy is an evolutionarily conserved degradative pathway, and the core autophagy machinery acts in a highly regulated, hierarchical manner to engulf cytoplasmic material in a double-membrane-bound...

UF4 and the High-Pressure Polymorph HP-UF4.

A laboratory-scale synthesis of UF4 is presented that utilizes the reduction of UF6 with sulfur in anhydrous hydrogen fluoride. An excess of sulfur can be removed by vacuum sublimation, yielding pure ...

Clinical Trials [4713 Associated Clinical Trials listed on BioPortfolio]

High Throughput Drug Sensitivity and Genomics Data in Developing Individualized Treatment in Patients With Relapsed or Refractory Multiple Myeloma or Plasma Cell Leukemia

This pilot clinical trial studies whether using high throughput drug sensitivity and genomics data is feasible in developing individualized treatment in patients with multiple myeloma or p...

High Throughput Drug Sensitivity Assay and Genomics- Guided Treatment of Patients With Relapsed or Refractory Acute Leukemia

This clinical trial studies the feasibility of choosing treatment based on a high throughput ex vivo drug sensitivity assay in combination with mutation analysis for patients with acute le...

Evaluation of the Diagnostic Contribution of High-throughput Exome Sequencing for Patients With Convulsive Encephalopathy of Unknown Etiology: Pilot Study to Improve Genetic Counselling

Congenital epileptic encephalopathies (EE) are predominantly genetic in origin. Their diagnosis is hampered by the large number of genes involved and their low recurrence. Genetic study in...

Bioequivalence Study to Evaluate the Impact of Varying Crystalline Polymorph Forms for the Commercial Oral Capsule Formulation of 10-mg Lenvatinib in Healthy Volunteers

This will be a randomized, single dose, open-label, three-treatment period crossover study in healthy participants to determine whether 2 test lots of 10-mg capsules that vary by the level...

Sentinel Node Mapping in High Risk Endometrial Cancer

This study will evaluate the role of systematic lymphadenectomy after sentinel node (SLN) mapping in high risk endometrial cancer (high grade histologies or deep myometrial invasion). The ...

Medical and Biotech [MESH] Definitions

Nanometer sized fragments (the dots) of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They are brighter and more persistent than organic chemical INDICATORS. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY.

A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA.

The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

A central nervous system stimulant and sympathomimetic with actions and uses similar to DEXTROAMPHETAMINE. The smokable form is a drug of abuse and is referred to as crank, crystal, crystal meth, ice, and speed.

Rapid methods of measuring the effects of an agent in a biological or chemical assay. The assay usually involves some form of automation or a way to conduct multiple assays at the same time using sample arrays.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Antiretroviral therapy
Standard antiretroviral therapy (ART) consists of the combination of at least three antiretroviral (ARV) drugs to maximally suppress the HIV virus and stop the progression of HIV disease. Huge reductions have been seen in rates of death and suffering whe...

Radiology
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...


Searches Linking to this Article