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Trans. Nonferrous Met. Soc. China 25(2015) 966-972 Preparation of potassium chromate by roasting of carbon ferrochrome Guo-rong HU, Jia-liang WANG, Zhong-dong PENG, Ke DU, Wei-gang WANG, Qing-lai... ferrochrome to prepare potassium chromate in the presence of potassium carbonate and air was investigated. The effects of reaction temperature, reaction time, mole ratio of potassium carbonate to carbon......
resistance of Mg alloys. Manganese is known to have a beneficial effect on the passivity of magnesium[5]. Some researchers have studied the non-chromate treatments that use acids and potassium.... The thickness of oxide layer increases with increasing coating voltage. The oxide layer formed on AZ91 Mg alloy in electrolyte with potassium permanganate consists of MgO and Mn2O3. Corrosion......
136.1 文献标识码:A Separation of aluminum and silicon in clean production process for potassium dichromate WANG Shao-na1, 2, ZHENG Shi-li 1, ZHANG Yi1 (1. Institute... in the clean production process for potassium dichromate was studied. The thermodynamic calculation results indicate that there is no produce of poisonous CaCrO4 when CaO is added into solution. When......
Investigation of High Molar Ratio Potassium Solution Used in Zinc-Rich Coatings LI Sheng1,YAN Rui1,WU Hang1 (1.Surface Engineering Research Institute, Beijing 100072, China) 摘要:High molar ratio potassium silicate solution used in zinc-rich water-base coatings was prepared by adding the nanosize SiO2 to the low molar ratio potassium silicate solution, and its microstructure was investigated......
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Preparation of copper nanoparticles by chemical reduction method using potassium borohydride ZHANG Qiu-li(张秋利)1, YANG Zhi-mao(杨志懋)2, DING Bing-jun(丁秉钧)2, LAN Xin-zhe(兰新哲)1, GUO Ying-juan(郭莹娟)1... by chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, and dispersant on the size of product and conversion......
Rare earth and silane as chromate replacers for corrosion protection on galvanized steel彭天兰,满瑞林摘 要:The present work aimed at using rare earth lanthanum salt and trimethoxy(viny)silance as chromate substitutes for galvanized steel passivation, in contrast to zinc coating samples treated with chromate.The corrosion resistance was assessed......
Rare earth and silane as chromate replacers for corrosion protection on galvanized steel PENG Tianlan1,MAN Ruilin1 (1.School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China) Abstract:The present work aimed at using rare earth lanthanum salt and trimethoxy(viny)silance as chromate substitutes for galvanized steel passivation, in contrast to zinc coating......
Post treatment of silane and cerium salt as chromate replacers on galvanized steel孔纲,卢锦堂,吴海江摘 要:A complex film on hot-dip galvanized steel sheet(HDG... that of single cerium film or silane film and closed to that of chromate film, because the polarization resistance Rp and electrochemical impendence were increased markedly.Microstructure and chemical......
Post treatment of silane and cerium salt as chromate replacers on galvanized steel WU Haijiang1,LU Jintang1,KONG Gang1 (1.School of Materials Science and Engineering, South China University... in the corrosion process, and the corrosion protection of the complex film was much better than that of single cerium film or silane film and closed to that of chromate film, because the polarization......