Alumina Ceramic

Key Advantages

Exhibits extremely high hardness and wear resistance.
Offers excellent electrical insulation properties.
Maintains high strength and stability at elevated temperatures.
Resistant to corrosion from various chemicals (acids, alkalis).
Features high compressive strength.
Possesses good thermal conductivity.
Available in various purity grades (e.g., 95% to 99.9%).
Can be precisely machined into complex shapes.

Alumina Ceramic

In a multitude of industrial sectors, from electronics and aerospace to chemical processing and heavy machinery, materials are constantly pushed to their limits. Traditional metals and plastics often fail to meet the stringent demands of applications involving extreme temperatures, aggressive chemical environments, high electrical loads, or severe abrasive wear. Engineers and designers continually seek materials that can offer superior durability, efficiency, and reliability under such challenging conditions.

The answer frequently lies in advanced technical ceramics. Among these, Alumina Ceramic, or aluminum oxide ( $A l_{2} O_{3}$ ), stands out as a foundational material. Renowned for its exceptional blend of mechanical, thermal, electrical, and chemical properties, it provides an indispensable solution for components that must perform reliably where other materials simply cannot.

DECENT’s Alumina Ceramic products are meticulously engineered to harness the inherent strengths of this remarkable material. Characterized by its outstanding hardness—second only to diamond—and superior wear resistance, alumina ceramic significantly extends the lifespan of components exposed to constant friction or abrasion. It also boasts remarkable high-temperature stability, maintaining its structural integrity and mechanical strength even when operating continuously at temperatures up to 1600°C.

Furthermore, its excellent electrical insulating properties, coupled with high dielectric strength, make it critical for sensitive electronic and high-voltage applications. With a high melting point and exceptional chemical inertness, DECENT’s Alumina Ceramic also resists corrosion from most acids and alkalis, ensuring long-term performance in corrosive atmospheres. Available in various purities and customizable shapes, our alumina ceramic components are the ultimate choice for industries demanding robust, precise, and highly reliable material solutions for their most challenging applications.

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Equipment Construction

Composition: Primarily aluminum oxide ( $A l_{2} O_{3}$ ).
Purity Levels: Ranges from standard (e.g., 95% $A l_{2} O_{3}$ ) to high purity (e.g., 99.5%, 99.7%, 99.9% $A l_{2} O_{3}$ ).
Hardness: Mohs hardness typically 9, Rockwell hardness HRA80-90.
Density: High density, typically 3.6 to 3.9 g/cm³.
Melting Point: Exceptionally high, around 2050°C.
Max Operating Temp: Continuous use up to 1500-1600°C.
Electrical Resistivity: High volume resistivity (e.g., > $1 0^{14}$ Ω·cm at 25°C).
Dielectric Strength: Excellent electrical breakdown strength (e.g., 15-20 kV/mm).
Thermal Expansion: Low coefficient of thermal expansion, enhancing thermal shock resistance.
Chemical Stability: Highly inert to most chemical reagents.

Technical Parameters

Alumina Ceramic Crucibles

Volume(ml)	Height(mm)	TopDiameter (mm)	BottomDiameter (mm)
5	25	27	15
8	30	27	15
10	27	28	18
15	30	33	20
20	35	38	20
25	40	40	22
30	42	47	25
50	47	50	30
100	60	65	35
150	65	75	40
200	70	80	40
300	85	90	40
500	122	90	45
950	160	100	60
1000	145	125	70

Corundum Dish

Diameter (mm)	High (mm)	Volume (ml)
75	28	60
80	35	75
100	40	125
110	40	150
127	46	250
143	50	400
160	60	500
190	65	1000

Corundum Ark

Ark No.	Length mm	Width mm	High mm
72-77	73	12	9
88	85	13	10
92	90	14	10
97	93	16	11

Ark Semicircle

Semicircle No.	Length (mm)	Width (mm)	High (mm)
1	240	40	20
2	150	40	20
3	290	40	22
4	50	40	17

Ash Dish

No.	Top Length (mm)	Bottom Length (mm)	Top Width (mm)	Bottom Width (mm)	High (mm)
D-211	45	37	22	13	15
D-212	50	41	27	20	15
D-213	60	53	30	22	15
D-214	80	72	40	32	17
D-215	90	82	60	52	18
D-217	120	108	60	50	18

Cobustion Boat

No.	Length (mm)	High (mm)	Top Length (mm)	Bottom Length (mm)
D-95	72	9	11	6
D-96	77	9	12	7
D-97	88	10	13	8
D-98	95	10	15	9
D-99	97	11	17	10

Evaporating Dish With Handle

No.	Volume (ml)	Top Diameter (mm)	Bottom Diameter (mm)	High (mm)
D-78	30	50	30	30
D-79	40	56	34	32
D-79-1	50	60	36	34
D-80	70	66	40	39
D-81	100	80	52	45
D-82	125	86	53	46
D-83	150	90	54	48
D-84	200	96	56	52
D-85	250	108	65	60
D-85-1	300	110	66	62
D-87	500	132	80	70
D-88	700	140	82	75
D-89	1000	164	100	90

Volatile Determination Crucible

No.	Volume (ml)	Top Diameter (mm)	Bottom Diameter (mm)	High (mm)
D-75	20	32	20	43
D-76	25	37	22	46
D-77	30	40	24	50

Unglazed Crucible

Volume (ml)	Top Diameter (mm)	Bottom Diameter (mm)	High (mm)
5000	165	100	265
1300	140	85	160
1000	135	80	150
750	115	65	150
500	105	65	170

Crucible Shelf

No.	Length (mm)	Width (mm)	High (mm)	Holes
D-900	160	100	40	6
D-901	160	150	40	9

Besides the above products, we also provide low wall crucibles, high wall crucibles, pores of crucibles, tight crucibles, double crucibles, roga crucibles, far infrared carbon crucibles, combustion tube, tapered tube, protection tube, threaded pipes, funnel, mortars, color plate, medicine shovel, clay triangle, acid resistant cylinder, staining VAT, experimental tank, corundum ball mill liner, alumina ceramic balls, corundum mortar, corundum tube, ect.