Introduction aux matériaux céramiques usinables ( macor )

2026-01-22

Propriétés céramiques du verre usinable (Macor)
Article
Unité
Valeurs typiques
Propriétés physiques
Couleur
Blanc
Composition principale
55 % fluorophlogopite + 45 % verre borosilicaté
Densité
g / cm3
2.60 
Porosité apparente
0.07%
Absorption d'eau
0
Température normale de sortie
ml / S · cm2
8.8*10-9
Taux de transmission de l'hélium
ml / S
1*10-10
Propriétés mécaniques
Dureté Rockwell (45N)
R45N
40
Dureté Vickers (charge 500g)
Gpa (Kg / mm2)
11.5(1175)
Résistance à la flexion ( 20C )
Mpa
>108
Résistance à la compression (20C)
Mpa
488
Module d'élasticité (25C)
Verre
65
Poisson‘s Ratio
0.29
Résistance aux chocs
KJ / m2
>2.56
Propriétés thermiques
Chaleur spécifique (25C)
kJ / kgC
0.79
Conductivité thermique (25C)
W / m.K
1.71
Diffusivité thermique (25C)
x 10-7 m² / s
7.3
Coefficient d'expansion thermique
10-6 / C
7.2
Résistance aux chocs thermiques
△ TC
200
Température de travail maximale
C
800
Propriétés électriques
Résistance diélectrique 
KV / mm
>40
Résistivité volumique (25C )
O.cm
1.08*1016
Résistivité volumique (200C )
O.cm
1.5*1012
Résistivité volumique (500C )
O.cm
1.1*109
Perte diélectrique
1-4*10-3
Constante diélectrique
Est-ce que
6-7

Caractéristiques

La céramique Macor est un matériau très unique et utile avec un certain nombre de propriétés convaincantes.

1. Excellentes propriétés mécaniques et applications

Les céramiques usinables possèdent des propriétés mécaniques exceptionnelles, notamment une dureté élevée, une résistance élevée et une excellente résistance à la compression. Ces 

Les propriétés rendent les céramiques usinables idéales pour de nombreuses applications industrielles, en particulier dans les environnements où les matériaux doivent résister à des forces extrêmes et 

abrasion.

Dureté et résistance élevées :

Dureté Rockwell :
R45N = 40.

Dureté Vickers (charge de 500 g) :
11,5 GPa (1175 Kg / mm2).

Module d'élasticité :
65 GPa à 25 ℃.

Résistance à la flexion :
108 MPa à 20 ℃.

Résistance à la compression :
488 MPa à 20 ℃.

Ces propriétés mécaniques permettent aux céramiques usinables de rester stables sous l'impact et la contrainte, réduisant ainsi le risque de casse. En raison de leur haute 

Résistance et résistance à l'usure, les céramiques usinables sont souvent utilisées pour fabriquer une variété de composants industriels haute performance, tels que des pièces en 

Fraiseuses, pièces coulissantes et inserts d'outils de coupe.

2. Excellentes propriétés thermiques

Les céramiques usinables possèdent également d'excellentes propriétés thermodynamiques, notamment une stabilité à haute température, un faible coefficient de dilatation thermique et une bonne 

résistance aux chocs thermiques.

Température maximale de fonctionnement :
800℃.

Conductivité thermique :
1,71 W / (m · K) à 25 ℃.

Coefficient de dilatation thermique :
7.2 10⁻⁶/℃.

Résistance aux chocs thermiques :
200℃.

Ces propriétés rendent les céramiques usinables extrêmement utiles dans les applications nécessitant une isolation thermique ou une préservation de la chaleur. Par exemple, dans certains 

Équipement de traitement chimique et fours à haute température, les céramiques usinables peuvent être utilisées comme couches isolantes pour aider à contrôler la température et à protéger 

composants mécaniques sensibles des dommages causés par la surchauffe.

3. Excellentes performances électriques

Les céramiques usinables possèdent également d'excellentes propriétés d'isolation électrique, ce qui les rend très précieuses dans les applications électroniques et électriques.

Résistance à la rupture (résistance d'isolation) :
30 kV / mm.

Résistivité volumique à 20 ℃ :
10Ω · cm à 20 ℃.

Ces propriétés électriques rendent les céramiques usinables très efficaces dans les applications haute tension et haute fréquence, offrant une protection isolante fiable.

Ce matériau céramique usinable fonctionne exceptionnellement bien dans une variété d'applications exigeantes, en particulier dans les domaines nécessitant une dureté élevée, une haute 

résistance, et d'excellentes propriétés thermiques et électriques.

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