Alumina Ceramic Crucible

An alumina ceramic crucible is a container made primarily from alumina and is widely used in various laboratory and industrial processes. Alumina ceramic crucibles are highly valued for their excellent thermal stability. They can withstand extremely high temperatures without deforming or melting, making them suitable for applications such as melting metals, conducting high-temperature chemical reactions, and performing thermal analyses.

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Products Description

An alumina ceramic crucible is a specialized ceramic container manufactured by molding and high-temperature sintering using high-purity alumina (Al₂O₃) as the primary raw material. Renowned for its exceptional high-temperature resistance, chemical stability, and excellent mechanical strength, it serves as a crucial tool in laboratories, industrial production, and scientific research for handling high-temperature materials, conducting chemical reactions, or melting samples. Depending on the alumina content, common types include standard grades (e.g., 85%, 95% alumina) and high-purity grades (e.g., 99%, 99.7% alumina). Generally, higher purity correlates with superior performance

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Product name	Alumina Ceramic Crucible
Material	Alumina Ceramic
Color	Customized according to the client's requirements
size	Customized according to the client's requirements
Machining accuracy	±0.001mm
Packaging	Carton /Pallet/Wooden case (According to client requirement )
Delivery time	Standard Product-Within 3 days
Items Design	According to the client's drawing or samples
Features	Good quality, low price, Multiple factories, deliver to you based on the one closest to your location
Application	Industrial Ceramics
Certificate	ISO, CE

Ceramics performance parameter

Number	Performance	Unit
			997 Porcelain	999 Porcelain	Aluminum Nitride
			Al2O3	Al2O3	JC-AN-210	JC-AN-170
1	Density	g/cm3	3.92	3.98	3.32~3.34	3.31~3.33
2	Flexural strength	MPa	400	550-600	340~360	400~420
3	Fracture toughness	MPa·m1/2	5.6-6	2.8-4.5	3.35	3.35
4	Dielectric constant	εr(20℃,1MHz)	9.8	9.9	8.8~9.0	8.7~8.9
5	Hardness	GPa	16.3	16.3-18	12-16
	Hardness	HRC	81	81-83	75-80
6	Volume resistivity	Ω·cm(20℃)	10 14	10 14	10 10	10 10
7	Elastic modulus	GPa	380	400	310	320
8	Coefficient of thermal expansion	×10-6/k	5.4-8.4	6.4-8.9	4.8~5.0	4.5~4.7
9	Compressive strength	MPa	2300	2300	2100	2000
10	Abrasions	g/cm2	0.1	0.1	0.01	0.01
11	Thermal conductivity	W/m×k(20℃)	35	38.9	200~220	160~180
12	Poisson's ratio	/	0.22	0.22	0.24	0.24
13	Insulation strength	kv/mm	30	30	26~28	30~32
14	Temperature	℃	1700	1700	2500	2500

Key Properties

Extremely High Temperature Resistance: Capable of stable, long-term operation in high-temperature environments ranging from 1600°C to 1800°C, with even higher short-term tolerance. High-purity alumina crucibles can withstand maximum service temperatures up to 1900°C.
Excellent Chemical Inertia: Exhibits strong resistance to most acids, alkalis, salts, and molten metals. It is particularly resistant to strong alkalis and acidic environments (except hydrofluoric acid), effectively preventing sample contamination.
Good Thermal Stability: Possesses a low coefficient of thermal expansion, enabling it to withstand severe temperature fluctuations (thermal shock). Its thermal shock resistance is superior to many other ceramic materials.
High Mechanical Strength and Hardness: Features a robust and solid structure with good wear resistance. However, it is relatively brittle and requires protection from mechanical impact and localized stress concentration.
Excellent Insulating Properties: Provides good electrical insulation at both room temperature and high temperatures.
Clean and Non-contaminating: The surface is smooth and dense, preventing material adhesion and penetration. It is easy to clean, ensuring purity requirements for experiments or production.

Primary Applications

Laboratory Analysis: Widely used in chemical analysis, spectroscopic analysis (e.g., sample preparation for XRF), ashing determination, high-temperature ignition, and sample pre-treatment.
Material Preparation and Metallurgy: Employed for high-temperature melting, sintering, crystal growth of metals, alloys, glass, ceramic powders, and for refractory material testing.
Semiconductor and Electronics Industry: Used as containers in the pulling or processing of semiconductor materials such as monocrystalline silicon and gallium arsenide.
Chemical and Catalysis Research: Serves as a container for high-temperature chemical reactions, catalyst carrier sintering, or evaluation.
Other Fields: Also used in precious metal melting, high-temperature heat treatment, and teaching experiments in universities and research institutes.