Attach a wire to each electrode of the battery. The wire on the positive terminal will be the anode and the wire on the negative terminal will be the cathode. The potassium metal will collect on the anode. Place the wood ash into a metal dish and heat the ash with the Bunsen burner, ...
Before dyeing, wool yarn needs to besoaked in an acid bath. This sounds scary but white vinegar which you may already have in your cupboard will do just fine. Some acid dyes contain the acid in them so you don't need to do the acid bath – however, we are using everyday materials ...
分解的碳酸盐怎样除去? 掌握好氰化物的用量是镀铜槽正常工作的重要因素。在日常生产中,为了使氰化亚铜和[敏感词]以1:2摩尔浓度比形成铜氰络合物,通常采用两者质量比为1:1.1进行配料。游离[敏感词]一般控制在9.5～20g/L之间。许多操作者能依靠经验来判断氰化物含量的多少,这主要是根据镀层质...
原因:镀液中NaCN被氧化及NaOH和空气中的C02作用等,有可能使碳酸含量升高,当Na2C03的含量超过90g/L或K2C03含量超过118g/L,就使溶液电阻增大,阴极电流效率下降,电流密度范围缩小,阳极钝化,镀层多孔甚至疏松。 处理方法: ①冷却法。根据Na2C03溶解度随温度而降低的原理,可...
How to Make Phosphorus Phosphorous was invented by accident by alchemist Hennig Brandt In 1669, while trying to make a philosopher's stone (a mythical substance which could turn base metal into gold). Since the time of Brandt, newer methods for producing phosphorus have been discovered, but ...
Today, I’ll guide you through identifying and treating Ich to save your fish’s life. Ich, short for Ichthyophthirius multifiliis, is a common aquarium disease caused by parasites that appear as white spots on fish. These parasites can easily transfer from tank to tank via fish, plants,...
you can consider using calcium carbonate hydroxide. Also, you should use the copper or PVC water pipes instead of lead ones because they are safer for your overall health. Before using the water running from the water pipes, you should make use of filtration system to remove heavy mental and...
5.1Over to You DIY Step-wise Procedures It basically involves the following crucial steps: Cutting copper clad laminate into proper size. Punching indentations for drilling holes for the component leads, as per the schematic. Drawing pads around the indentations with etch resist paint, and linking...
Q. Anybody know how to prepare NICKEL STRIPPER for Mild steel?ARUN YOGESH- MUMBAI INDIAFebruary 1, 2014---Ed. note: As you see, Arun, we've appended your inquiry to a thread which already addresses the issue. Good luck.Q. I have nickel plated parts per QQ-N-290 but there is base...
Etching is used to produce parts without damaging the structure or tolerance of the metals being shaped, which is a shortcoming of other metal forming methods. There are very few limitations to the types of metals that can be processed by metal etching. ...