EGG Material Test Lab Service

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18/04/2025

X-Ray Diffraction

18/04/2025

The life of scientist

SMART MATERIAL VANADIUM DIOXIDE (VO2)A prime candidate for this application is the thermochromic compound vanadium dioxi...
02/02/2025

SMART MATERIAL VANADIUM DIOXIDE (VO2)

A prime candidate for this application is the thermochromic compound vanadium dioxide(VO2),asithasthe ability to reversibly change from a semiconductor with a
monoclinic structure(M-phase)to a metal with a tetragonal rutiles tructure(R-phase)at a phase transition temperature (τc) of 68°C. As the material undergoes a phase shift,its
optical properties also change;i.e.,when it is in the VO2(M) phase,it is transparent to IR radiation,whereas when it is in
the VO2 (R)phase, it becomes IR reflective. Meanwhile, the transmission of visible light does not change in both phases. Hence,VO2 has great potential in the fabrication
of smartwindows.
But VO2(M) have 2 differents phase M1 (transition temperature at 68°C) M2 show higher transition temperature around 80-90°C

Vanadium dioxide M2 under SEM analysis
06/09/2024

Vanadium dioxide M2 under SEM analysis

Visual representation of edge dislocation in a cactus 🌵
08/05/2024

Visual representation of edge dislocation in a cactus 🌵

Welcome to our renowned laboratory, where we offer exceptional material analysis services utilizing cutting-edge techniq...
05/05/2024

Welcome to our renowned laboratory, where we offer exceptional material analysis services utilizing cutting-edge techniques such as X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), UV-visible Spectroscopy (UV-vis), and Fourier Transform Infrared Spectroscopy (FT-IR)....
Our state-of-the-art facility houses advanced instruments and is staffed by a team of highly trained scientists and technicians. With XRD, we can determine the crystal structure and phase identification of materials, providing valuable insights into their composition and properties. SEM enables us to examine the microstructure and surface morphology at high resolution, unveiling critical details and aiding in defect analysis. UV-vis spectroscopy allows us to analyze the electronic transitions and optical properties of materials, facilitating the characterization of dyes, pigments, and other compounds. Additionally, FT-IR spectroscopy assists in identifying functional groups and molecular vibrations, enabling us to analyze the chemical composition and bonding within materials. Our laboratory is committed to delivering accurate and reliable results, supporting researchers, industries, and professionals in various fields, including materials science, nanotechnology, pharmaceuticals, and more. Join us in harnessing the power of advanced analytical techniques to unlock the mysteries of materials and drive innovation forward.
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Chào mừng đến với phòng thí nghiệm danh tiếng của chúng tôi, nơi chúng tôi cung cấp các dịch vụ phân tích vật liệu xuất sắc bằng cách sử dụng các kỹ thuật tiên tiến như X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), UV-visible Spectroscopy (UV-vis) và Fourier Transform Infrared Spectroscopy (FT-IR).
Cơ sở nghiên cứu hiện đại của chúng tôi được trang bị các thiết bị tiên tiến và có đội ngũ nhà khoa học và kỹ thuật viên được đào tạo cao. Với XRD, chúng tôi có thể xác định cấu trúc tinh thể và nhận dạng pha của vật liệu, mang lại những thông tin quý giá về thành phần và tính chất của chúng. SEM cho phép chúng tôi quan sát cấu trúc vi mô và hình dạng bề mặt với độ phân giải cao, tiết lộ những chi tiết quan trọng và hỗ trợ phân tích khuyết tật. Quang phổ UV-vis cho phép chúng tôi phân tích các chuyển tiếp điện tử và tính chất quang của vật liệu, hỗ trợ đặc tính hóa của mực, chất nhuộm và các hợp chất khác. Ngoài ra, phổ FT-IR hỗ trợ trong việc xác định các nhóm chức năng và dao động phân tử, cho phép chúng tôi phân tích thành phần hóa học và liên kết trong vật liệu. Phòng thí nghiệm của chúng tôi cam kết cung cấp kết quả chính xác và đáng tin cậy, hỗ trợ các nhà nghiên cứu, ngành công nghiệp và các chuyên gia trong nhiều lĩnh vực, bao gồm khoa học vật liệu, công nghệ nano, dược phẩm và nhiều lĩnh vực khác. Hãy cùng chúng tôi khám phá sức mạnh của các kỹ thuật phân tích tiên tiến để khám phá bí ẩn của vật liệu và thúc đẩy sự đổi mới.

A micrograph of a 1.4371. An austenitic chromium nickel steel. The term "austenite" goes back to Sir William Chandler Ro...
05/05/2024

A micrograph of a 1.4371.

An austenitic chromium nickel steel.

The term "austenite" goes back to Sir William Chandler Roberts-Austen, who lived from 1843-1902.

Austenitic steel has a face-centred cubic crystal structure. It has a very good combination of mechanical properties combined with high corrosion resistance.
The material 1.4371 also has high strength and toughness at kyro temperatures. Therefore, it is used for kyrotechnical tanks or for welding constructions at sub-zero temperatures.

Etched with Beraha II
Magnification 200x BF

Metallurgy is the science of materials that studies metals, their elaborations, their properties, their treatments. By e...
05/05/2024

Metallurgy is the science of materials that studies metals, their elaborations, their properties, their treatments. By extension, this refers to the industry of manufacturing metals and alloys, which is based on the master of this science.
There is no simple definition of metal. However, any chemical element with "metallic properties" or "metal-related properties" is classified as metal. The properties of the metal are shine (after polishing), good thermal and electrical conductivity, as well as the ability to be profiled or deformed at room temperature and permanently. Depending on their properties, metals will be suitable for different everyday objects.
Chemical elements lacking the properties of metals are classified as non-metal. Some elements, called metalloids, sometimes behave like metals and other times like nonmetals. Examples of metalloids are carbon, phosphorus, silicon and sulfur.
The properties of different metals can be combined by mixing two or more of them. The substance obtained is an alloy (not to be confused with Composite). Pure elemental metals are often too soft for practical use, which is why metallurgy relies primarily on the search for useful alloys.
A distinction is made between ferrous metals (iron-based: steel, cast iron, etc.) and non-ferrous metals (which do not contain iron, based on aluminum, copper, magnesium, etc.).
Let's take a look at some of the properties of metals and their alloys.
⚜️Ductility is the ability of a material to stretch, lengthen and deform without breaking (breaking, breaking).
⚜️The elasticity of a metal refers to its ability to regain its shape, like a spring that you stretch and release. The yield strength represents the point at which the part is permanently deformed (This is one of the characteristic properties of materials).
⚜️The hardness of a material is defined as the resistance it opposes to the pe*******on of a body harder than it.
⚜️Malleability is the ease with which a material allows itself to be sha

X-Ray Diffraction (XRD)X-ray diffraction (XRD) relies on the dual wave/particle nature of X-rays to obtain information a...
05/05/2024

X-Ray Diffraction (XRD)

X-ray diffraction (XRD) relies on the dual wave/particle nature of X-rays to obtain information about the structure of crystalline materials. A primary use of the technique is the identification and characterization of compounds based on their diffraction pattern.

The dominant effect that occurs when an incident beam of monochromatic X-rays interacts with a target material is scattering of those X-rays from atoms within the target material. In materials with regular structure (i.e. crystalline), the scattered X-rays undergo constructive and destructive interference. This is the process of diffraction. The diffraction of X-rays by crystals is described by Bragg’s Law, n(lambda) = 2d sin(theta). The directions of possible diffractions depend on the size and shape of the unit cell of the material. The intensities of the diffracted waves depend on the kind and arrangement of atoms in the crystal structure. However, most materials are not single crystals, but are composed of many tiny crystallites in all possible orientations called a polycrystalline aggregate or powder. When a powder with randomly oriented crystallites is placed in an X-ray beam, the beam will see all possible interatomic planes. If the experimental angle is systematically changed, all possible diffraction peaks from the powder will be detected.

The parafocusing (or Bragg-Brentano) diffractometer is the most common geometry for diffraction instruments.

This geometry offers the advantages of high resolution and high beam intensity analysis at the cost of very precise alignment requirements and carefully prepared samples. Additionally, this geometry requires that the source-to-sample distance be constant and equal to the sample-to-detector distance. Alignment errors often lead to difficulties in phase identification and improper quantification. A mis-positioned sample can lead to unacceptable specimen displacement errors. Sample flatness, roughness, and positioning constraints

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