On December 31, 2021, Oh, In-Chan; Kim, Ho-Young; Hyun, Soong-Keun; Byoun, Young-Min published an article.Quality Control of Pyridine-3-sulfonic acid The title of the article was Characterization of palladium electrodeposition in ammonia-free electrolyte with additives. And the article contained the following:
Electrodeposition of Pd provides excellent chem. and low-contact resistance with good elec. properties, such as different types of elec. contacts in the electronics industry. The conventional Pd plating process utilizes ammonia-based electrolytes. Ammonia was added continuously to maintain the optimum pH range in Pd electrolyte. In addition, the harmful and strong odor of the evaporating ammonia necessitates the use of a ventilator. A further disadvantage is that the brass substrate is corroded by ammonia vapor, and the corrosion products can contaminate the electrolytes, thereby changing the technol. properties of the deposited plating for the worse. Ethylenediamine has been proposed as an alternative to ammonia; however, Pd electrodeposition occurs as microcracks via hydrogen evolution. In this study, the effects of Pd electrolyte on ethylenediamine as a complexing agent and the properties of various additives are investigated to improve c.d. and internal stress in Pd electrodeposition that occurs on a brass substrate. Therefore, complexing agents such as 3-pyridine sulfonic acid, sodium nicotinate, butyne 1-4 diol, and sodium allylsulfonate are selected as additives, to serve as an alternative to ammonia in Pd electrolyte. In this study, the properties of electrodeposited Pd with various additives were examined The effect of additives on Pd electrolytes can be classified as dense surfaces without defects such as microcracks and pinholes, which improved surface roughness and corrosion resistance. Particularly, Pd electrolyte using sodium nicotinate has relatively improved surface roughness and properties. Pd electrolyte was optimized under ammonia-free conditions by the addition of sodium nicotinate. The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Quality Control of Pyridine-3-sulfonic acid
The Article related to palladium electrodeposition ethylenediamine electrolyte additive surface roughness elec property, Electrochemistry: Electrodes, Electrode Reactions, and Electrode Potentials and other aspects.Quality Control of Pyridine-3-sulfonic acid