Disposable Component Sensor for Alloy Bath

本研究的目的是研制一种商品化的合金镀液一次性元件传感器。用几种锌传感器测量了后续锌浓差电池的电动势。锌(S或1.)/锌^和锌；++和/锌-锡或锌-铅合金(1.)以锌铜(S)/锌++/锌锡或锌铅合金(1)为参比电极，以镀锌钢丝或胶囊中的液态锌为参比电极，以熔盐(ZnCl2+KCl2+LiCl2)和固体KCl粉共存的复合电解液作为传感器的参比电极。测得的电动势与前文可靠的数据相吻合。在目前的小型合金镀液中，传感器的响应时间为30~60 S。实验结果表明，该响应时间与温度响应时间相对应。因此，在大型合金熔池的情况下，响应时间有望缩短到2~3秒。固体参比电极传感器类型简单，组装容易，优于液体参比电极。传感器与复合电解液的组装被发现是最理想的方法如下。复合电解液可以在单一的液体中熔化，传感器盖浸入液体中，并在瞬间从液体中吸收。

The purpose of the present study is the development of commercial disposable component sensor for alloy bath. The EMF of the following zinc concentration cell has been measured by using several kinds of zinc sensors. Zn (s. or 1.) /Zn^<++>/Zn-Sn or Zn-Pb alloys (1.) Zn-Cu (s.) /Zn++/Zn-Sn or Zn-Pb alloys (1.)The reference electrode in sensor is the galvanized steel wire or liquid zinc in a capsule and the composite electrolyte consist of the molten salt (ZnCl_2+KCl+LiCl) coexisted with solid KCl powder in sensor.The following experimental results has been shown.1. The measured EMF values are in agreement with the reliable data in previous paper.2. The response time of sensor found to be 30〜60 s in the present small alloy bath. And this response time has been confirmed to be correspond to that of temperature based on this experiment. So in the case of large scale alloy bath the response time could be expected to be shorten to 2〜3 s.3. Solid reference electrode is better than liquid because sensor type can be simple and the assembling can be easy.4. The assemble of the sensor with the composite electrolyte found to be the most desirable method as follows. The composite electrolyte could be molten in a single liquid phase and sensor capsele dipped in the liquid and take up from the liquid in a moment.