Ruolz obtained brass and bronze by electrodeposition. 1942 he published an electroplating solution similar to modern bronze electroplating, which mainly consisted of cuprous cyanide and stannate. During the period of 1850- 1883, the United States and Britain published about 380 patents on electroplating, of which nearly 30 were about electroplating alloys, including brass, bronze and gold-based and silver-based alloys. The monograph on electroplating bronze was published 1870 years ago. It is widely used in industrial production, mainly for electroplating brass.
1925, Spitzer published an article on electroplating brass and its electrodeposition theory in Electrochemical magazine. 19 10, Failde (Fild) published two monographs on electroplating alloy: one was brass electroplating, and the other was copper-silver alloy electroplating.
In 19 16, the effects of electroplating potential and process conditions on the composition of the deposited alloy were studied, and the microstructure of the deposited layer was observed by microscope. During the period of 19 10- 1920, Hongying systematically studied the properties of brass electroplating and its bath. At the same time, Blum et al. studied the properties of electrodeposited lead-tin alloy and its bath.
During the period of 1925- 1929, metallurgists studied the structure of electrodeposited alloy, and they found that the structure of alloy coating obtained by electrodeposition was similar to that obtained by hot melting.
Since 1930, the development of electrodeposited alloys has accelerated. An important development of 1936 is the development and application of bright nickel-cobalt alloy electroplating in industrial production, and the application of lead-tin alloy electroplating in bearings is further promoted. Faust et al. obtained electrodeposited alloys containing copper, nickel, antimony and chromium.
After 1950, Brenner and others in the United States systematically studied the alloys of iron group metals (iron, cobalt and nickel) with tungsten and phosphorus. Tin-based alloys containing nickel, copper and antimony were studied in Britain. In the Soviet Union, we mainly studied alloys containing manganese, tungsten, molybdenum and chromium with other metals, as well as additives for bearing alloys and electrodeposited alloys.
Professor Raub's research institute spent 15 years and published 20 articles on alloy electroplating. The research scope includes alloy electroplating process, the influence of electroplating conditions on alloy composition, the determination of alloy coating properties, and the structure of alloy coating is studied by metallographic method and X-ray. According to the preliminary statistics of monographs and articles published by various countries in recent 10 years, the Soviet Union has the largest number, followed by the United States and Japan, and West Germany, Britain and France have also done a lot of research work in this field.
1962, brenner published the book electrode position of alloys. Principle and practice. He summarized the research results of alloy electroplating before 1960, and comprehensively introduced the principle and technology of alloy electroplating.