Self-Formed Aluminum Nitride Microtubes that Exhibit a Large Bending Stress

2001 ◽  
Vol 695 ◽  
Author(s):  
Morito Akiyama ◽  
Kazuhisa Shobu ◽  
Chao-Nan Xu ◽  
Kazuhiro Nonaka
Keyword(s):  
Thin Film ◽  
Hydrochloric Acid ◽  
Aluminum Nitride ◽  
Acid Solution ◽  
Film Thickness ◽  
Hydrochloric Acid Solution ◽  
Room Temperature ◽  
Bending Strength ◽  
Aluminum Foil ◽  
Bending Stress

ABSTRACTWe have investigated the aluminum nitride microtubes made of aluminum nitride thin film. Aluminum nitride thin film deposited on aluminum foil forms microtubes of itself at room temperature when the aluminum foil is dissolved in hydrochloric acid solution. The aluminum nitride microtubes exhibit a large bending stress of 1100 94 megapascals. The bending stress is more than three times larger than the bending strength of aluminum nitride bulk. The diameter of the microtubes is proportional to the film thickness. The bending stress is independent of the film thickness and is fixed.

scholarly journals Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Ciprofloxacin Drug

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Inemesit A. Akpan ◽  
Nnanake-Abasi O. Offiong
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Mild Steel ◽  
Hydrochloric Acid Solution ◽  
Room Temperature ◽  
Inhibition Efficiency ◽  
Steel Corrosion ◽  
First Order ◽  
First Order Kinetics ◽  
Mild Steel Corrosion

The inhibition of mild steel corrosion in hydrochloric acid solution by ciprofloxacin drug as an eco-friendly and commercially available inhibitor was studied at room temperature by weight loss technique. It was found that the test drug has a promising inhibitory action against corrosion of mild steel in the medium investigated. The inhibition efficiency was found to increase with a corresponding increase in the concentration of the inhibitor. It was also found that the adsorption as well as the inhibition process followed a first-order kinetics and obeyed Langmuir’s adsorption isotherm.

scholarly journals THE REACTION OF NITRAMINES WITH HYDROCHLORIC ACID

1955 ◽  
Vol 33 (7) ◽  
pp. 1197-1201
Author(s):  
A. F. McKay ◽  
W. G. Hatton ◽  
M. Skulski
Keyword(s):  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Room Temperature ◽  
Reactive N ◽  
Nitroguanidine Derivatives

A facile process for the conversion of N-(β-nitraminoethyl)-N′-substituted-N″-nitroguanidines into the reactive N-(β-chloroethyl)-N′-substituted-N″-nitroguanidines has been developed. N-(β-Nitraminoethyl)-N′-phenyl-N″-nitroguanidine on standing in concentrated hydrochloric acid solution gives a mixture of N-(β-chloroethyl)-N′-phenyl-N″-nitroguanidine and 1-nitro-2-phenylamino-2-imidazoline. N-(β-Chloroethyl)-N′-diethyl-N″-nitroguanidine, which is prepared in a similar manner, is unstable at room temperature and it slowly cyclizes to give 1-nitro-2-diethylamino-2-imidazoline. Some new nitroguanidine derivatives formed from the reaction of amines with methylnitrosonitroguanidine also are described.

A 35Cl magnetic resonance study of chloride exchange on indium(III) and thallium(III) in aqueous hydrochloric acid solution

1975 ◽  
Vol 28 (9) ◽  
pp. 1901 ◽  
Author(s):  
SF Lincoln ◽  
AC Sandercock ◽  
DR Stranks
Keyword(s):  
Exchange Rate ◽  
Magnetic Resonance ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Magnetic Resonance Study ◽  
Aqueous Hydrochloric Acid ◽  
Chloride Exchange ◽  
Lower Limits ◽  
Aqueous Hydrochloric Acid Solution

The parameters describing chloride exchange on indium(III), determined by 35Cl N.M.R., are: k(298 K)= (8.8�0+4) x 106 s-1, ΔH? = 45.7�2.3 kJ mol-1 and ΔS? = 42�8 J mol-1 K-1; and k(298 K)= (2.0�0.1)x106 s-1, ΔH? = 37.7�1.9 kJ mol-1, and ΔS? = 3�6 J mol-1 K-1 in 10.95M and 7.00M aqueous hydrochloric acid respectively, calculated from the observed exchange rate kex4[InCl4(H2O)2-].��� For thallium(III) lower limits of kex(219 K) = 1.6 x 106 s-1 and 1.3 x 106 s-1 were obtained in 10.95M and 7.00M aqueous hydrochloric acid, respectively, where [TlCl6]3- is assumed to be the exchanging species.

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