Alumina Ceramic Vertebrae

CeramicsTimes' alumina ceramic (Al2O3) vertebrae are high-hardness, wear-resistant, chemically stable precision ceramic components that are widely used in medical implants ...

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CeramicsTimes' alumina ceramic (Al2O3) vertebrae are high-hardness, wear-resistant, chemically stable precision ceramic components that are widely used in medical implants (e.g., artificial vertebrae), industrial machinery (e.g., bearings, guides), chemical equipment, and other fields.

CeramicsTimes company's alumina ceramic vertebrae are irreplaceable in the medical and industrial fields due to their excellent mechanical properties and biocompatibility. Optimized material formulations, precision machining and surface treatment technologies can further expand their potential for use in extreme environments.

CeramicsTimes company's alumina ceramic vertebra is a biomedical ceramic component made of high-purity a-Al,0: as the main raw material, through precision molding and high-temperature sintering. This product has excellent biocompatibility, mechanical properties and corrosion resistance.

Product name	Alumina ceramic vertebrae
Material	Alumina ceramic
Color And Size	Customize
Packaging	Carton / Pallet (According to client requirement )
Delivery time	7-30 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

Alumina Ceramic Vertebrae

Key Performance Parameters

As surgical implants, their properties are governed by stringent international and domestic standards. Core parameters include:

Composition and Structure: Implant materials must be high-purity alumina ceramics. Medical-grade specifications typically require alumina (Al₂O₃) ceramic purity exceeding 99.7% (i.e., alumina 99.7) with an average grain size below 4 microns-significantly surpassing industrial-grade alumina ceramics like 95% or 96% alumina. This purity foundation, defining what is alumina ceramic in a medical context, ensures high strength and long-term durability. The density of Al₂O₃ in these sintered bodies is a key factor in their performance.

Mechanical Properties:

Flexural Strength: Reaches 500 megapascals (MPa) or higher, a testament to the high strength ceramics category.
High Hardness and Wear Resistance: Exhibits high Mohs hardness, offering exceptional wear resistance.
Elastic Modulus: Its modulus significantly exceeds that of human bone. However, structural design using porous alumina ceramics mitigates stress shielding effects.
Biocompatibility: As a "biologically inert" al2o3 material, it exhibits exceptional stability in the human body.
Surface Properties: Surfaces can be engineered as porous alumina ceramic structures or with bioactive coatings to promote osseointegration.

Ceramics Performance Parameter

Number	Performance	Unit
			95Alumina	97Alumina	99Alumina	995Alumina	997Alumina	998Alumina	Zirconia Toughened Alumina	Alumina Toughened Zirconia
									ZTA	ATZ
1	fineness		95%	97%	99%	995%	997%	998%
2	Density	g/cm3	3.7	3.8-3.85	3.85	3.9	3.92	3.98	4.0-4.3	≧5.25
3	Flexural strength	MPa	304	320	340	370	400	550-600	700	≧650
4	Fracture toughness	MPa·m1/2	4	4.5	5.6-6	5.6-6	5.6-6	5.6-6	7	≧7
5	Dielectric constant	εr(20℃,1MHz)	9.0	9.2	9.5	9.7	9.8	9.9	9.2	9.2
6	Hardness	GPa	12.8-15	15	15-16	15-16	16.3	16.3-18	13	14.5
7	Hardness	HRC	73-79	79	79-80	79-80	81	81-83	76	78
8	Volume resistivity	Ω·cm(20℃)	10 ¹³	10 ¹⁴	10 ¹⁴	10 ¹⁴	10 ¹⁴	10 ¹⁴	10 ¹⁴	10 ¹⁴
9	Elastic modulus	GPa	320	330	380	380	380	400	300	280
10	Coefficient of thermal expansion	×10-6/k	7.6	7.6	7.6	7.6	5.4-8.4	6.4-8.9	8.3	8.5
11	Compressive strength	MPa	1910	2100	2210	2300	2300	2300	2400	2450
12	Abrasions	g/cm2	0.2	0.1	0.1	0.1	0.1	0.1	0.1	0.1
12	Thermal conductivity	W/m×k(20℃)	20	24-27	34	35	35	38.9	27
13	Poisson's ratio	/	0.22	0.22	0.22	0.22	0.22	0.22	0.26	0.2
14	Insulation strength	kv/mm	27	28	28	28	30	30	30	30
15	Temperature	℃	1520-1600	1650	1520	1650	1700	1700	1650	2000