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low density electrical insulation machinable glass ceramic rod macor bar-0

Machinable Glass Ceramic

Home >  Products >  Industrial Ceramics >  Machinable Glass Ceramic

Low Density Electrical Insulation Machinable Glass Ceramic Rod Macor Bar

Machinable microcrystalline glass ceramics can be processed and have excellent machining performance. Ordinary machine tools and cutting tools can be used for mechanical processing such as turning, milling, grinding, drilling, punching, and tapping.

Introduction

Brief

 

Machinable microcrystalline glass ceramics can be processed and have excellent machining performance. Ordinary machine tools and cutting tools can be used for mechanical processing such as turning, milling, grinding, drilling, punching, and tapping.

   

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Details

 

Machinable microcrystalline glass ceramics are fluorite mica microcrystalline glass with synthetic mica as the main crystal phase, mainly composed of fluorite mica (Mg3K [AlFe2O (SiO3) 3]) and glass with silicon dioxide as the main component. Containing 55% fluorogold mica and 45% borosilicate glass matrix.

  • It has good vacuum resistance, high and low temperature resistance, insulation, and acid and alkali corrosion resistance.
  • Machinable ceramics have excellent thermal shock resistance, with no breakage from 800 ℃ to 0 ℃ and no change in strength from 200 ℃ to 0 ℃.
  • Its excellent performance has enabled it to be widely used in fields such as aviation, aerospace, electronic substrates, high-temperature insulation skeletons, ion coating, vacuum coating, ion microscopes, ion accelerators, lasers, and medical equipment.

 

Parameter

 

Machinable Glass Ceramic
Property Content     Property Index  Instruction
Density  2.6g/cm³
Apparent Porosity  0.069%
Water Absorption  0
Hardness  4~5  Mohs
Color  White 
Coefficient of Thermal Expansion   72×10⁻⁷ /℃   -50 to 200 average
Thermal Conductivity  1.71W/m·k 25℃
Long Working Temperature   800℃
Flexural Strength  >108MPa
Compression Strength  >508MPa
Impact Toughness  >2.56KJ/m²
Modulus of Elasticity  65GPa
Dielectric Loss  1~4×10⁻³  Room Temperature
Dielectric Constant  6~7 "
 Puncture Strength >40KV/mm  Sample Thickness 1mm
Volume Resistance  1.08×10¹⁶Ω·cm 25℃
1.5×10¹²Ω·cm 200℃
1.1×10⁹Ω·cm 500℃
Normal Temperature Gas Efficiency 8.8×10⁻⁹ml/s·cm² Vacuum Burn-in 8 hours 
Helium Through Rate  1×10⁻¹⁰ml/s   500 firing, cooling
5%HC1 0.26mg/cm²  95,24hours
5%HF 83mg/cm² "
50%Na₂CO₃ 0.012mg/cm² "
5%NaOH 0.85mg/cm² "

 

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