Overview of Alumina Crucible

Alumina crucibles, made from aluminum oxide (Al₂O₃), are highly valued in laboratory and industrial settings for their exceptional thermal stability and chemical inertness. They are used in high-temperature applications such as melting and calcining materials, including metals, ceramics, and chemicals. Alumina crucibles come in various purities and shapes to meet specific needs, offering durability and resistance to thermal shock and corrosion.

Features of Alumina Crucible

High Thermal Stability: Can withstand extremely high temperatures without degrading.

Chemical Inertness: Resistant to most chemicals, making it suitable for a wide range of reactions.

Durability: Exceptional resistance to wear and mechanical stress.

Thermal Shock Resistance: Minimal risk of cracking or breaking under rapid temperature changes.

Corrosion Resistance: Withstands corrosive environments, extending its lifespan.

Purity Levels: Available in different purity levels to suit specific application requirements.

Variety of Shapes and Sizes: Customizable to fit various experimental and industrial needs.

(High purity Conical laboratory refractory porcelain alumina ceramic crucible for thermal analysis)

Specifications of High purity Conical laboratory refractory porcelain alumina ceramic crucible for thermal analysis

The High Purity Conical Lab Refractory Porcelain Alumina Porcelain Crucible is engineered for precision thermal evaluation applications, including thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and high-temperature example processing. Made from 99.6% or higher pureness alumina (Al ₂ O ₃), this crucible ensures minimal contamination, outstanding thermal security, and resistance to chemical rust. Its cone-shaped shape advertises efficient warmth distribution and minimizes sample splilling, suitable for regulated experiments. Secret specs consist of an optimum operating temperature level of 1750 ° C( 3182 ° F)in continuous usage, with short-term tolerance as much as 1800 ° C(3272 ° F). The material shows low thermal development (8.6 × 10 ⁻⁶/ ° C )and high thermal shock resistance, efficient in holding up against quick temperature level variations approximately 200 ° C( 392 ° F )differential. The crucible’s dense microstructure (3.9 g/cm ³ evident porosity listed below 0.1%) makes certain minimal gas permeability and long term durability. Offered in common abilities varying from 5 mL to 100 mL, with common sizes including 10 mL (35 mm height, 28 mm top size), 25 mL (45 mm height, 36 mm leading diameter), and 50 mL (55 mm height, 42 mm top diameter). Wall thickness is precision-controlled at 2– 3 mm for uniform heat transfer. The surface area is smooth and non-reactive, with a Mohs solidity of 9, making certain scrape resistance and compatibility with abrasive samples. Chemically inert, it withstands acids (leaving out hydrofluoric and phosphoric), antacid, and molten salts. Weight differs by size, e.g., 10 mL crucible considers about 15 g. Developed for duplicated usage, it keeps architectural honesty after several heating-cooling cycles. Suitable with electric and gas heaters, along with induction heater. Suitable for processing metals, glass, ceramics, and natural substances. Take care of with ceramic tongs to avoid thermal stress cracks. Pre-cleaning with thin down nitric acid or high-temperature calcination is suggested to get rid of residues. Complies with ASTM E1582 and ISO 17205 criteria for laboratory crucibles. Customized sizes and geometries are available upon demand. Shop in a completely dry environment to prevent moisture absorption.

(High purity Conical laboratory refractory porcelain alumina ceramic crucible for thermal analysis)

Applications of High purity Conical laboratory refractory porcelain alumina ceramic crucible for thermal analysis

High-purity conical lab refractory porcelain alumina ceramic crucibles are crucial tools in thermal evaluation applications, using unequaled durability, thermal stability, and chemical inertness. These crucibles are crafted from high-purity alumina (Al ₂ O ₃), commonly going beyond 99% pureness, making certain marginal contamination during high-temperature procedures. Their conelike shape boosts warm circulation and sample control, making them optimal for precise thermal researches.

** Key Applications: **.
1. ** Thermogravimetric Evaluation (TGA): ** These crucibles are extensively used in TGA to determine changes in a sample’s mass as a function of temperature level. Their high thermal shock resistance enables quick home heating and cooling cycles without splitting, while their inert nature protects against unwanted responses with samples.
2. ** Differential Scanning Calorimetry (DSC): ** The crucibles work as example holders in DSC to examine heat flow during phase transitions or chemical reactions. Their reduced thermal mass ensures accurate temperature level dimensions and consistent standard stability.
3. ** Ash Content Decision: ** In material screening, they endure long term direct exposure to severe temperatures (as much as 1700 ° C) for ashing organic or not natural examples, guaranteeing total combustion without degrading.
4. ** High-Temperature Synthesis: ** They are made use of in sintering, melting, or calcining materials like ceramics, metals, or catalysts, where pureness and thermal resistance are critical.
5. ** Corrosive Atmospheres: ** Alumina’s resistance to acids, alkalis, and molten salts makes these crucibles appropriate for dealing with responsive or destructive materials throughout thermal decomposition researches.

** Advantages: **.
– ** Thermal Stability: ** Hold up against temperature levels up to 1800 ° C, maintaining structural honesty under duplicated thermal cycles.
– ** Chemical Inertness: ** Resist communication with a lot of chemicals, making sure example honesty and accurate outcomes.
– ** Reusability: ** Dense, non-porous surface areas permit very easy cleaning and reuse, minimizing long-lasting costs contrasted to disposable options.
– ** Precision Design: ** Cone-shaped geometry facilitates efficient heat transfer and decreases example spillage.

These crucibles are indispensable in research laboratories, quality control labs, and industrial settings for applications in pharmaceuticals, products science, metallurgy, and environmental evaluation. Their dependability in supplying exact, reproducible information makes them a keystone of thermal evaluation operations. By integrating high-purity materials with durable design, alumina ceramic crucibles guarantee optimal efficiency in one of the most demanding high-temperature settings.

Company Introduction

Welcome to Teen-Hot,a leading global supplier of high-quality crucibles designed for various industrial applications. We offer an extensive range of crucibles, including graphite, ceramic, and metal varieties, tailored to meet the needs of foundries, laboratories, and manufacturers. Our products are renowned for their durability, thermal resistance, and precision engineering, ensuring optimal performance in melting and heat treatment processes. With advanced manufacturing facilities and a commitment to excellence, we provide reliable, cost-effective solutions worldwide. Partner with us for your crucible needs and experience superior quality, expert support, and timely delivery.

If you have any questions, please feel free to contact us(nanotrun@yahoo.com).

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of High purity Conical laboratory refractory porcelain alumina ceramic crucible for thermal analysis

What is the maximum temperature the high-purity alumina ceramic crucible can withstand? The high-purity conical alumina ceramic crucible is designed to endure extreme temperatures up to 1700°C (3092°F) in continuous use and can tolerate short-term spikes up to 1800°C (3272°F). Its refractory properties ensure minimal thermal expansion, reducing the risk of cracking under rapid temperature changes, making it ideal for high-heat applications like thermal gravimetric analysis (TGA) or ash determination.

Why is high-purity alumina crucial for thermal analysis? With an Al₂O₃ content exceeding 99%, these crucibles minimize contamination risks caused by impurities. In sensitive thermal analyses, trace elements in lower-purity materials could react with samples, alter decomposition curves, or produce inconsistent results. The inert nature of high-purity alumina ensures chemical stability, preventing unwanted interactions and preserving sample integrity.

How does the conical shape enhance thermal analysis performance? The conical design improves heat distribution uniformity, reduces sample spillage, and ensures compatibility with standard instrument holders. Its geometry promotes efficient gas flow during experiments, critical for processes like oxidation or reduction studies. The tapered shape also simplifies sample insertion and retrieval in furnaces or analyzers.

What cleaning methods are recommended for these crucibles? After use, rinse the crucible with diluted hydrochloric acid (HCl) or nitric acid (HNO₃) to dissolve residues, followed by distilled water. Avoid abrasive scrubbing to prevent surface damage. For organic residues, heat the crucible to 600°C (1112°F) to burn off contaminants. Store in a dry environment to prevent moisture absorption, which could affect weight-sensitive analyses.

Are these crucibles compatible with all thermal analysis techniques? Yes, they are widely used in TGA, differential scanning calorimetry (DSC), and differential thermal analysis (DTA) due to their thermal stability and inertness. They resist corrosion from acids, bases, and molten salts, making them suitable for diverse sample types. However, avoid hydrofluoric acid (HF) or strong alkalis at high temperatures, as these can degrade alumina. Always pre-heat crucibles to eliminate moisture before precise weight-based tests.

(High purity Conical laboratory refractory porcelain alumina ceramic crucible for thermal analysis)