| 摘要 |
<p>The invention relates to a process for coating a substrate, in which: a substrate (100) is provided having at least one free surface (110); a first layer (101) of a first material is deposited on the free surface (110) of the substrate (100); a second layer (102) of a second material, different from the first material, is deposited on the first layer (101); a third layer (103) of a third material, different from the first and second materials, is deposited on the second layer (102). The process is characterised in that it comprises in addition the deposition of a protective layer (104) of a fourth material, different from the first, second and third materials, on the third layer (103); and the reflow of at least the second (102) and third (103) layers from the first (101), second (102) and third (103) layers, by transfer of heat by thermal contact on the protective layer (104), the protective layer (104) avoiding oxidation at least of the third layer (103). The invention also relates to a coating preventing the formation of whiskers, particularly on the terminals of press-fit contacts, as well as to press-fit contacts using such a coating and to printed circuits provided with such contacts.</p> |
