Substrate having high absorptance and emittance black electroless nickel
coating and a process for producing the same
    1.
    发明授权
    Substrate having high absorptance and emittance black electroless nickel coating and a process for producing the same 失效
    具有高吸收率和发射率黑色无电镀镍涂层的基板及其制造方法

    公开(公告)号:US4511614A

    公开(公告)日:1985-04-16

    申请号:US546780

    申请日:1983-10-31

    CPC classification number: C23C18/36 Y10T428/24355 Y10T428/31 Y10T428/31678

    Abstract: A substrate having high absorptance and emittance is produced by roughening the surface of the substrate, immersing the substrate in a first electroless plating bath having a low phosphorus to nickel concentration, then immersing the substrate in a second electroless plating bath having a phosphorus to nickel concentration higher than that of said first electroless plating bath. Thereafter, the resulting electroless nickel-phosphorus alloy coated substrate is immersed in an aqueous acidic etchant bath containing sulfuric acid, nitric acid and divalent nickel to develop a highly blackened surface on said substrate.

    Abstract translation: 通过使衬底的表面粗糙化,将衬底浸入具有低磷至镍浓度的第一无电镀浴中,然后将衬底浸入具有磷至镍浓度的第二无电镀浴中,从而产生具有高吸收率和发射率的衬底 高于所述第一化学镀浴。 然后,将所得到的无电解镍 - 磷合金涂覆的基材浸入含有硫酸,硝酸和二价镍的酸性腐蚀剂水浴中,以在所述基材上形成高度变黑的表面。

    Tin strip formulation for metal to glass seal diodes
    3.
    发明授权
    Tin strip formulation for metal to glass seal diodes 失效
    金属到玻璃密封二极管的锡带配方

    公开(公告)号:US4009299A

    公开(公告)日:1977-02-22

    申请号:US624681

    申请日:1975-10-22

    CPC classification number: H01L21/02052 C23F1/30

    Abstract: Immersion of semiconductor devices, particularly diodes, having a defective tin plating thereon in a solution of 5 - 20 percent by weight trichloroacetic acid, 0.1 to 5 percent by weight of a compound selected from the group consisting of cationic, anionic, and nonionic surfactants and the balance water effectively removes the tin therefrom. The process is effective at room temperature but preferably is performed at approximately 100.degree. C.

    Abstract translation: 在5-20重量%三氯乙酸,0.1-5重量%的选自阳离子,阴离子和非离子表面活性剂的化合物的溶液中浸渍其上具有不良镀锡的半导体器件,特别是二极管,以及 余量水有效地从其中除去锡。 该方法在室温下有效,但优选在约100℃下进行。

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