Improved Manganese Phosphate Coatings

Crain, Henry

Improved Manganese Phosphate Coatings

Active / Technical Report | Accession Number: ADA018131 |

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Abstract:

Work was conducted to determine the mechanism by which superior manganese phosphate coatings are produced. The phosphate coatings were applied at temperatures above 212 F and with manganese-organic compounds added to the phosphating solution. Experimental baths and solubility studies have shown that the manganese concentration in the bath is critical and that the main function of the manganese-organic compounds is to increase the manganese concentration. The necessity of a processing temperature higher than 212 F has been attributed to an exponential increase in the reaction rate constant with temperature for the conversion of manganese dihydrogen phosphate MnH2PO42 to manganese phosphate Mn3PO42.

Author(s):

Crain, Henry

Author Organization(s):

ROCK ISLAND ARSENAL IL GENERAL THOMAS J RODMAN LAB

Descriptive Note:

Technical rept.

Supplementary Note:

DOI: 10.21236/ADA018131

Pagination:

0022

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

RIA-R-TR-75-034

Project Number(s):

DA-1-T-062105-A-328

Monitor Series:

RIA-R

Subject Terms

Joint Capability Areas:

JCA_5_Command and Control; JCA_5.2_Understand; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_5.3_Planning; JCA_1_Force Support

Communities of Interest:

Weapons Technologies

Descriptor(s):

*METAL COATINGS, *PHOSPHATE COATINGS, *MANGANESE COMPOUNDS, REACTION KINETICS, HIGH TEMPERATURE, CORROSION INHIBITION, ORGANOMETALLIC COMPOUNDS, SOLUTIONS(GENERAL), CONCENTRATION(CHEMISTRY), CHEMICAL COMPOUNDS, HYDROGEN COMPOUNDS

Field(s)/Group(s):

Coatings, Colorants and Finishes

Keyword(s):

*MANGANESE PHOSPHATES

Report Date:

1975 Apr 01