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    About 1,090,000 results (0.31s) 
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    An AI Overview is not available for this searchCan't generate an AI overview right now. Try again later.
    AI Overview
    Black Al2O3 (aluminum oxide) ceramic substrates are advanced insulating materials formulated with additives (often chromium, manganese, or carbon) to achieve a black color, providing low light reflectivity, high electrical insulation, and excellent thermal conductivity. They are primarily used in high-power LED packaging, sensor components, and electronic devices requiring strong light-shading properties (low, or near-zero reflection). 
    Key Properties and Benefits 
    • Optically Opaque: Ideal for applications that require blocking light, such as sensors or photo-sensitive packaging, whereas standard Al2O3 is white.
    • Excellent Thermal Management: Maintains high thermal conductivity to dissipate heat in high-power semiconductor, RF, and microwave applications.
    • High Insulation & Hardness: Retains high dielectric strength and electrical insulation properties.
    • Customization: Available for metallization (e.g., thin/thick film circuits) and laser machining (drilling/cutting) for specific circuit layouts. 
    Typical Applications 
    • High-Power LEDs: Packaging materials where light absorption is required.
    • Image Sensors: Substrates for CCD/CMOS sensors in cameras and optoelectronics.
    • Power Modules: High-performance power electronics requiring both insulation and heat dissipation. 
    Common Material Options 
    • 95-96% Al2O3 (Black): Frequently used for electronic packaging.
    • 99.6% Black Alumina: Used for high-end applications requiring higher performance, often with specialized doping to achieve the color. 
    If you can tell me:
    • What is the application (e.g., LED, sensor, power circuitry)?
    • What are your size/thickness requirements?
    • Do you need metallization (like gold/copper plating)?
    I can suggest the most appropriate type of black alumina.
     
    • Fabrication of porous Al2O3 ceramics using carbon black as a ...
      Oct 1, 2022 — In this study, porous alumina ceramics were prepared by addition of 5–30 vol% carbon black (CB) powders with different specific su...
      ScienceDirect.com
    • Alumina AL2O3｜Ceramics materials
      AR (B) / AR (B) -99.6 Black alumina. This black alumina excels in its low light reflectivity while retaining the ...
      asuzac-ceramics.jp
    • Aluminum Oxide (Al2O3) Ceramic Substrates
      Alumina ceramics are stable to aggressive chemicals like acids and have very good electrical insulation properties and thermal con...
      semi-el.com
    • 99.6%, 99.5%, 96% and Black Alumina - Centerline Technologies
      The standard for thin film substrates is 99.6% Alumina which is often used for sputtered, evaporated and chemically vapor deposite...
      Centerline Technologies
    • Black Alumina Ceramic Substrate
      Applications of Black Alumina Ceramic Substrates Black alumina ceramic substrates are primarily used in semiconductor integrated c...
      Great Ceramic
    • Fabrication of porous Al2O3 ceramics using carbon black as a ...
      Oct 1, 2022 — In this study, porous alumina ceramics were prepared by addition of 5–30 vol% carbon black (CB) powders with different specific su...
      ScienceDirect.com
    • Alumina AL2O3｜Ceramics materials
      AR (B) / AR (B) -99.6 Black alumina. This black alumina excels in its low light reflectivity while retaining the ...
      asuzac-ceramics.jp
    • Aluminum Oxide (Al2O3) Ceramic Substrates
      Alumina ceramics are stable to aggressive chemicals like acids and have very good electrical insulation properties and thermal con...
      semi-el.com
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    Web results

    Black Al2O3 Ceramic Substrate


    Fujian Huaqing Electronic Material Technology Co.,Ltd
    https://www.huaqingcn.com › black-al2o3-ceramic-subst...
    Fujian Huaqing Electronic Material Technology Co.,Ltd
    https://www.huaqingcn.com › black-al2o3-ceramic-subst...
    Apr 18, 2023 — Superior Black Al2O3 Ceramic Substrate with factory price, short delivery time and rich experiences exporting more than 19+years, ...

    Alumina (Al2O3) Packages / Substrates


    Kyocera
    https://global.kyocera.com › search_material › detail
    Kyocera
    https://global.kyocera.com › search_material › detail
    Alumina, also known as Aluminum Oxide or simply Al 2 O 3 , is a chemically stable, high-hardness, heat-resistant ceramic.Read more

    Order Reliable Alumina Substrates for Electronics


    Atcera.com
    https://www.atcera.com › alumina-substrates_c108
    Atcera.com
    https://www.atcera.com › alumina-substrates_c108
    Properties of Al2O3 Substrates. 1. Good smoothness, or flatness with less porosity, and excellent in adhesion with thin film and thick film materials.Read more
    Discussions and forums
    How is it possible that a sapphire substrate turned black after annealing?
    ResearchGate · 
    3 answers
     · 7 years ago
    How is it possible that a sapphire substrate turned black after annealing?
    ResearchGate · 
    3 answers
     · 7 years ago
    These are impurities of organic compounds that become carbon during heating in a vacuum. For example, fingerprints on sapphire's surface turn black. Also ...  More
    Top answer · 3 votes · 7 years ago
    Why is my aquarium substrate turning black?.
    Reddit · 
    r/PlantedTank
     · 50+ comments
     · 2 years ago
    Why is my aquarium substrate turning black?.
    Reddit · 
    r/PlantedTank
     · 50+ comments
     · 2 years ago
    Did you use root tabs? Sometimes they’ll “stain” the substrate.  More
    Top answer · 56 votes · 2 years ago
    I could be wrong, but my sand will turn black when it goes anaerobic. Poke it with a sick or ...  More
    50 votes · 2 years ago
    Well it is mostly under biofilm, I removed the biofilm( mucus like growth, think it's biofilm) ...  More
    27 votes · 2 years ago
    See more

    Web results

    High Purity Black Color Aluminum Oxide Ceramic Plate


    Fujian Huaqing Electronic Material Technology Co.,Ltd
    https://www.huaqingcn.com › high-purity-black-color-al...
    Fujian Huaqing Electronic Material Technology Co.,Ltd
    https://www.huaqingcn.com › high-purity-black-color-al...
    Aluminum Oxide(Al2O3) has extremely high hardness, high temperature resistance and insulation, so it is widely used in all kinds of high precision equipment.Read more

    Black Auminum Oxide?


    Eng-Tips
    https://www.eng-tips.com › threads › black-auminum-o...
    Eng-Tips
    https://www.eng-tips.com › threads › black-auminum-o...
    Jan 8, 2010 — Aluminum Oxide, Al2O3 is white. Why then, after handling bare Aluminum alloy with bare hands does ones hands become coated with a black smut?Read more

    Aluminum Oxide PCB (Al2O3) - CERcuits online ceramic PCB ...


    ceramic-pcb.com
    https://ceramic-pcb.com › aluminum-oxide-pcb-al2o3
    ceramic-pcb.com
    https://ceramic-pcb.com › aluminum-oxide-pcb-al2o3
    We supply both Aluminum Oxide PCB (Al2O3 96%) made by thick film process (Silver metalization) as well as Direct Plated Copper Technologies (DPC), with copper ...Read more

    Light-Proof Black Ceramic Sheet Al2O3 Alumina Substrate for ...


    Made-in-China.com
    https://m.made-in-china.com › ... › Ceramic Substrate
    Made-in-China.com
    https://m.made-in-china.com › ... › Ceramic Substrate
    Black alumina substrates have excellent comprehensive properties such as high mechanical strength, good insulation and light-shielding properties, and are ...

    Fabrication of porous Al2O3 ceramics using carbon black ...


    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    by A Çelik · 2022 · Cited by 34 — In this study, porous alumina ceramics were prepared by addition of 5–30 vol% carbon black (CB) powders with different specific surface area ( ...Read more
    People also ask
    Is Al2O3 black in color?
    Pure aluminum oxide powder is white, but black (and brown and pink) powders can be created by fusing calcined alumina with iron, titanium, silicon, calcium, magnesium, chromium, and possibly other oxides.Mar 12, 2015

    In what ways (other than color) does black Aluminum Oxide differ from ...


    Chemistry Stack Exchange
    https://chemistry.stackexchange.com › questions › in-wh...
    Chemistry Stack Exchange
    https://chemistry.stackexchange.com › questions › in-wh...
    What causes aluminum to turn black?
    An error has occurred. Please try again later.
    What is Al2O3 substrate?
    An error has occurred. Please try again later.
    What is black alumina?
    Opaque Alumina is a dark brown color often referred to as Black Alumina. This material is used in specialty applications. 99.6% Alumina standard sizes available: 4.50" x 4.50" square to 1.00" x 1.00" square in thicknesses from .005" thru .050"

    Alumina Oxide: 99.6%, 99.5%, 96% and Black - Centerline Technologies


    Centerline Technologies
    https://www.centerlinetech-usa.com › alumina
    Centerline Technologies
    https://www.centerlinetech-usa.com › alumina

    Web results

    Alumina AL2O3｜Ceramics materials


    asuzac-ceramics.jp
    https://asuzac-ceramics.jp › material › material1
    asuzac-ceramics.jp
    https://asuzac-ceramics.jp › material › material1
    AR (B) / AR (B) -99.6 Black alumina. This black alumina excels in its low light reflectivity while retaining the ...Read more

    Scholarly articles for al2o3 substrate black

    Al2O3 on black phosphorus by atomic layer deposition: … - ‎Zhu - Cited by 112
    Conformal Al2O3 coatings on black silicon by thermal … - ‎Otto - Cited by 13
    … layer deposited Al2O3 field-effect passivation in black … - ‎Von Gastrow - Cited by 89
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    Kyocera Substrate
    Kyocera material properties

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