Forum pracy nad projektem wskrzeszenia The Forge

[yoylqnqvwb]

The temperature stability of electroless nickel plating


0.10.88I4.92383O. 8085.3111040.83I4.9248.1O. 7585.3121O. O0.8344.9258.4O. 7185 . O13'i0 .20.8954.9267.8 O. 729 Note t1. 1h plating each specimen , according to the results of Jiang set to calculate the consumption of added salt reduction sickle seal consumption by more than the main light Qing LI. 18 supplement. 2h after plating a plating irrigation adjustments, including adjustment of pH value . ■ plating process is not the whole pH. Pll values ​​in the table refer to the entire Mi before plating a good pH value. 2. * re- i / 3 the device increases . 2.6 Analysis and conclusions from the univariate analysis , NaSO. Vote on the solution stability and have significant impact , as well as to accelerate the effect. from the bath } f key factor of instability is NaHPO,. NaHPO, the increase not only the deposition rate slows down , but also accelerate the decomposition of the bath . pH value of plating of the double play . It can be seen from the reaction mechanism , pH, the higher the benefit over reaction ( 1), ( 2), ( 3 ),[link widoczny dla zalogowanych], ( 4 ) to right , on the one hand speed Ni deposition ( benefit ), on the other hand And produce large amounts of H2, and to H. PO generated faster , leading to bath instability. Therefore, a reasonable choice of pH, increase the Jing and the promotion of appropriate complexing agents, either increase the H. PO? of Tolerance , but also to ensure that the plating rate and bath stability, which is why we control the pH value of the experimental section , a starting point. Judging from the comprehensive experiment , through the strict control of pH value of the segment , the bath remains stable , MTO experimental period to eight or more, plated catch range 8 ~ 13 / m * · h ~, fully able to meet the actual production Requirements, and the first factory in Guangdong, 14 dependents of oil and other analysis of the production practice Jianghai good effect . As NaSO. Vote on the solution stability cumulative significant impact . Thus, by sub- control {} jpH value, at the right time to increase network sets the amount of agent and promoter , both to ensure that the deposition rate can significantly extend the life of Tibetan plating , the production and proven to be entirely feasible.