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Application of phosphating techniques to aluminium and carbon steel surfaces using nitro guanidine as oxidizing agent.; Aplicacion de tecnicas de fosfatacion sobre acero al carbon y aluminio, utilizando como agente oxidante la nitroguanidina.

Abstract

Phosphate coatings are inorganic crystalline deposits laid down uniformly on properly prepared surfaces by a chemical reaction with the treated base metal. The reaction consists in dissolving some surface metal by acid attack and then causing surface neutralization of the phosphate solution with consequent precipitation of the phosphate coating. Phosphate coatings do not provide appreciable corrosion protection in themselves. They are useful mainly as a base for paints, ensuring good adherence of paint to steel and decreasing the tendency for corrosion to under cut the paint film at scratches or other defects. We deposited phosphate on standard carbon steel, employing techniques of cold phosphate (at 40 Centigrade degrees and with a treatment time of 30 minutes) and hot phosphate (at 88 Centigrade degrees and with a treatment time of 15 minutes), where the latter gave the best results. Both methods used phosphate solutions of Zn/Mn and the catalyst Nitro guanidine. Aluminium surfaces of phosphate were used solutions of Cr and as catalyst Sodium bi fluoride. The phosphating on this surface we deposited at temperature of 50 degrees C with a treatment time of 10 minutes. We obtained a new phosphate coating on steel surfaces, these coatings were realized with a  More>>
Authors:
Publication Date:
Oct 01, 1995
Product Type:
Thesis/Dissertation
Report Number:
INIS-mf-14597
Reference Number:
SCA: 360105; 400101; PA: AIX-26:069354; EDB-95:149281; NTS-96:007114; SN: 95001471453
Resource Relation:
Other Information: TH: Thesis (Chemical Engineer).; PBD: 1995
Subject:
36 MATERIALS SCIENCE; 40 CHEMISTRY; CARBON STEELS; MANGANESE PHOSPHATES; ZINC PHOSPHATES; COATINGS; NEUTRON ACTIVATION ANALYSIS; ADHESION; ALUMINIUM; CORROSION; GUANIDINES; MICROHARDNESS; ROUGHNESS; STAINLESS STEELS
OSTI ID:
124800
Research Organizations:
Universidad Autonoma del Estado de Mexico, Toluca (Mexico). Facultad de Quimica
Country of Origin:
Mexico
Language:
Spanish
Other Identifying Numbers:
Other: ON: DE96602553; TRN: MX9500016069354
Availability:
INIS; OSTI as DE96602553
Submitting Site:
INIS
Size:
129 p.
Announcement Date:

Citation Formats

Briseno M, S A. Application of phosphating techniques to aluminium and carbon steel surfaces using nitro guanidine as oxidizing agent.; Aplicacion de tecnicas de fosfatacion sobre acero al carbon y aluminio, utilizando como agente oxidante la nitroguanidina.. Mexico: N. p., 1995. Web.
Briseno M, S A. Application of phosphating techniques to aluminium and carbon steel surfaces using nitro guanidine as oxidizing agent.; Aplicacion de tecnicas de fosfatacion sobre acero al carbon y aluminio, utilizando como agente oxidante la nitroguanidina.. Mexico.
Briseno M, S A. 1995. "Application of phosphating techniques to aluminium and carbon steel surfaces using nitro guanidine as oxidizing agent.; Aplicacion de tecnicas de fosfatacion sobre acero al carbon y aluminio, utilizando como agente oxidante la nitroguanidina." Mexico.
@misc{etde_124800,
title = {Application of phosphating techniques to aluminium and carbon steel surfaces using nitro guanidine as oxidizing agent.; Aplicacion de tecnicas de fosfatacion sobre acero al carbon y aluminio, utilizando como agente oxidante la nitroguanidina.}
author = {Briseno M, S A}
abstractNote = {Phosphate coatings are inorganic crystalline deposits laid down uniformly on properly prepared surfaces by a chemical reaction with the treated base metal. The reaction consists in dissolving some surface metal by acid attack and then causing surface neutralization of the phosphate solution with consequent precipitation of the phosphate coating. Phosphate coatings do not provide appreciable corrosion protection in themselves. They are useful mainly as a base for paints, ensuring good adherence of paint to steel and decreasing the tendency for corrosion to under cut the paint film at scratches or other defects. We deposited phosphate on standard carbon steel, employing techniques of cold phosphate (at 40 Centigrade degrees and with a treatment time of 30 minutes) and hot phosphate (at 88 Centigrade degrees and with a treatment time of 15 minutes), where the latter gave the best results. Both methods used phosphate solutions of Zn/Mn and the catalyst Nitro guanidine. Aluminium surfaces of phosphate were used solutions of Cr and as catalyst Sodium bi fluoride. The phosphating on this surface we deposited at temperature of 50 degrees C with a treatment time of 10 minutes. We obtained a new phosphate coating on steel surfaces, these coatings were realized with a phosphate solution manufactured with the precipitates gathered during the hot phosphating on carbon steel. These coatings show excellent physical characteristics of corrosion resistance. The physical testings of the coatings phosphate obtained on carbon steel and aluminium surfaces. These testing were: roughness, thickness, microhardness and adhesion. The best results were showed in carbon steel phosphate with precipitated solutions. Activation analysis with thermic neutrons was used to determine the phosphate coatings composition. Finally, corrosion testings were realized by means of two methods; electrochemical and by weight loss methods (gravimetric). (Abstract Truncated)}
place = {Mexico}
year = {1995}
month = {Oct}
}