SILICON CARBIDE MATERIALS
    12.
    发明专利

    公开(公告)号:DE3365450D1

    公开(公告)日:1986-09-25

    申请号:DE3365450

    申请日:1983-08-17

    Applicant: IBM

    Abstract: Silicon carbide material retains the hardness, wear and resistance properties and can be rendered electrically conductive by the incorporation of germanium in the range 0.01 to 0.03 percent therein. The material is very hard, is electrically conductive in the 2x10 4 Ωcm range and is useful in highly corrosive and abrasive applications. A process for producing said material by pyrolytically dissociating an organic silicon and carbon bearing gas like triethylsilane and tetraethylgermanium over a substrate taken from the group of quartz, sapphire, ceramic alumina, silicon carbide, gallium arsenide and metals melting above 800°C, is also described.

    14.
    发明专利
    未知

    公开(公告)号:DE2325598A1

    公开(公告)日:1974-01-10

    申请号:DE2325598

    申请日:1973-05-19

    Applicant: IBM

    Abstract: A durable "see-through" photoresist mask is obtained by forming a layer of ruby on a sapphire substrate, and forming a layer of Cr2O3 on the ruby. This combination of materials acts to effectively absorb light over the sensitive range of approximately 3,000 to 4,500 A, and yet allows transmission of sufficient light in the visible range to permit visual alignment and positioning of the mask. The mask is fabricated, in one mode, by depositing a layer of Cr2O3 + Cr on a layer of sapphire and heating in an inert atmosphere to diffuse Cr into the sapphire and create a layer of ruby intermediate a layer of sapphire and Cr2O3.

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