tailieunhanh - Summary of PhD dissertation Theoretical chemistry and Physical chemistry: Tudying the effects of some additives on the alkaline non cyanide galvanizing process, orienting the fabrication of the additive system for alkaline non-cyanide zinc plating bath

Determining the effect ofthe single additive being organic and inorganic substances such as poly alcohol, poly amines, sodium salt of various modules and the combination of additives on the properties of the zinc coating created in the solution. alkaline plating solution without cyanide, compare the chemical and physical properties of the coating obtained from the non cyanide alkaline plating bath and other plating baths. | 1 MINISTRY VIET NAM ACADEMY OF EDUCATION AND TRAINING OF SCIENCE AND TECHNOLOGY GRADUATE UNIVERSITY OF SCIENCE AND TECHNOLOGY - TRUONG THI NAM Thesis title STUDYING THE EFFECTS OF SOME ADDITIVES ON THE ZINC PLATING PROCESS ORIENTED APPLICATION FOR ALKALINE NON-CYANIDE ZINC PLATING BATH SUMMARY OF PHD DISSERTATION Major Theoretical Chemistry and Physical Chemistry Code HA NOI 2021 This dissertation has been carried out at Graduate university of Science and Technology hanoi. Viet Nam Academy of Science and Technology 2 Supervisors Dr. Le Ba Thang Assoc. Prof. Dr. Nguyen Thi Cam Ha The thesis will be defended at the Board of Examiners of Graduate university of Science and Technology hanoi. Viet Nam Academy of Science and Technology at . on . 1. Significance of the study 3 The problem of corrosion resistance for metal materials has become an urgent need for all countries in the world especially for Vietnam which is located in the tropical monsoon climate temperature High air humidity 1 . Metal coating is one of the methods of corrosion protection that has been researched and used quite popularly in the world and in Vietnam. Among them zinc is one of the most used metal coatings to protect components parts machine parts and carbon steel structures thanks to its low cost cathodic protection for steel. . Galvanized coating can be obtained from a variety of methods such as electroplating hot dipping spray coating where electroplating dominates with small details is used in atmospheric conditions and does not require too much longevity. high. Some of the zinc plating solutions have been studied and used such as zinc plating from sulfate solution fluoride cyanide pyrophotphate chloride and non-cyanide alkali. Among them the solutions widely used in industry are cyanide chloride and non-cyanide alkali. The world s cyanide alkali-plated solution was commercialized very early in the 1960s 3 . However recently thanks to the introduction of new polishing additive .