PROCESS FOR MAPPING FORMIC ACID DISTRIBUTION
    5.
    发明申请
    PROCESS FOR MAPPING FORMIC ACID DISTRIBUTION 失效
    映射酸性分布的方法

    公开(公告)号:US20120261458A1

    公开(公告)日:2012-10-18

    申请号:US13089074

    申请日:2011-04-18

    IPC分类号: B23K31/12 B23K1/20 B23K31/02

    摘要: A transfer process for bonding a solderable device to a solderable first substrate having a first oxidized surface comprises placing the solderable device proximate to the first substrate in a reducing chamber, where the first surface cannot be visually observed. We place a second substrate having a second oxidized surface in the chamber in a way to visually observe the second surface. Selecting the first substrate and the second substrate so that the reduction of the second surface correlates with the reduction of the first surface provides an indication of the degree of reduction of the first surface. Introducing a reducing agent into the chamber under reducing conditions reduces the surfaces which we track by irradiating and observing the second surface; evaluate any change in the second surface during irradiation and correlate the change with first surface reduction. When sufficiently reduced, we solder the first substrate to the device.

    摘要翻译: 用于将可焊接装置接合到具有第一氧化表面的可焊接的第一基板的转移过程包括将可焊接装置靠近第一基板放置在还原室中,其中第一表面不能被目视观察。 我们以在目视上观察第二表面的方式放置在腔室中具有第二氧化表面的第二衬底。 选择第一基板和第二基板,使得第二表面的减小与第一表面的减小相关,提供第一表面的减小程度的指示。 在还原条件下将还原剂引入到室中通过照射和观察第二表面来减少我们跟踪的表面; 评估照射期间第二表面的任何变化,并将变化与第一表面还原相关联。 当充分减少时,我们将第一个衬底焊接到器件。

    Method and apparatus for fluxless solder bonding
    8.
    发明授权
    Method and apparatus for fluxless solder bonding 失效
    无焊剂焊接方法和装置

    公开(公告)号:US5205461A

    公开(公告)日:1993-04-27

    申请号:US524408

    申请日:1990-05-16

    IPC分类号: B23K1/012 H01L21/00 H05K3/34

    摘要: Method and apparatus for fluxlessly solder bonding a solder mound to a solder wettable surface. A heated gas, preferably a reducing or non-reactive gas, is directed at a solid solder mound. Gas is heated to a temperature sufficient to melt solder mound. The heated gas is directed at the molten solder mound at a momentum sufficient to disperse an oxide layer at the surface of the molten solder mound. Dispersing the oxide layer permits the molten solder to wet the solder wettable surface. The molten solder is cooled to form a solder bond.

    摘要翻译: 将焊锡焊料无焊焊接到焊料可润湿表面的方法和装置。 加热气体,优选还原性或非反应性气体,被引导到固体焊料堆。 将气体加热到足以熔化焊料堆的温度。 加热的气体以足以将氧化物层分散在熔融焊料堆的表面的动量指向熔融焊料堆。 分散氧化物层允许熔融焊料润湿焊料可润湿表面。 将熔融的焊料冷却以形成焊料接合。