US43630A - Improvement in preserving iron from corrosion - Google Patents

Improvement in preserving iron from corrosion Download PDF

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US43630A
US43630A US43630DA US43630A US 43630 A US43630 A US 43630A US 43630D A US43630D A US 43630DA US 43630 A US43630 A US 43630A
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iron
corrosion
improvement
preserving
preserving iron
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    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C26/00Coating not provided for in groups C23C2/00 - C23C24/00

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

V, UNITED STATES PATENT FFIQE,
OF NEW YORK CITY, NI Y. f
IMPROVEMENT IN'PRESEIRVING tReN .FBi-Q'IYLC RRQSIO Q- Specification forming part of Letters ?atentll 1o 43,630, dated July 19, 186
To all whom it may concern:
Be it known that I, CHAR-LES DE BUSSY, of
Paris, in the Empire of. France, have invented process for preserving iron from corrosion as.
produced by the influence of air and sea-water to be as follows: j
The means hitherto employed for preservin g iron from any corrosive actions are based either on'galvanic processes, or on the use of coatings intended to resist said corrosive actions.'-.When substances are thus applied in a mechanical way to preserve the surface of iron they offer a very slight adhesion. Moreover, in many cases, according to the nature of the metallic oxide used for the coating, they will exert a direct corrosive action, such as takes place withminium when applied to the bulls of iron-built vessels. Acting upon these data, I have come to the conclusion thatin'order to obtain a most satisfactory result in preserving iron a coating must be used. whose adhesion shall be the result of a chemical action on the metalitself. Among the various matters that will fulfill this condition, I prefer using the'fusible and insoluble ferruginous compounds, they both protecting the surface of the iron and filling up, by reason of their fusibility, those imperceptible fissures and cavities which always 'occur in wro.ught-iron, owing to the porous nature of the metal, and-to the imperfections unavoidabl y arising from the forging or rolling process.
' A great number of compounds may be used, each answering the purpose of this invention, as above set forth. its nature, and how it is or may be carried into efl'ect,'l will now describe the manner in which I employ one particular compound by which 1 have obtained the best result. The process which I consider the mostsim ple and reliable consists in subjecting the iron pieces to be preserved to the action of phosphorus at a high temperature, so as toproduce on their surface a thin layer or coating of melted p'hosphidc of iron. 'This coating proves to be very ad hesive, and is hardly acted upon by the corrosive agents to which iron is commonly exposed. This operation may be efl'ected by exposing the red-hot iron direct to In order to show clearly and economical way is by heating the pieces in cases or chambers similar to those. of converting-furnaces, the 'pieces being embedded therein in a brasque or mixture composed of charcoal or coke dust impregnated with a solution of acid phosphate of lime. Pieces of large'si'ze may also be brought to a weldingheat and then be laid on a bed or b'rasque courposed as aforesaid and well dried and covered up with the same materials. The heat radi: ated by the piece is sufliciently powerful'to cause the distillation of the phosphorus and its combination with the iron..
This process may be advantageously applied in many instances, such as for iron plates to be used in ship andhouse building, anchors, gun-carriages, water-tanks, &c. Itis pecti liarly adapted for iron plating oriron shields or armors, for preventing the rapid deterioration of which no eflicient means have been devised hitherto.
I wish it to be distinctly understood thatQI do not confine my process to the use of phosphorus only, as I may use in its stead-any other body acting in the same way, such as arsenic, antimony, &c. ,The mode of applying these various substances will necessarily have to be somewhat modified, according to their reactions and the nature of the compounds from which they are derived; Arsenic, for instance, will be applied iii the same way as phosphorus, with the only difl'erence that the brasque shall be composed of a mixture'ot charcoal and arsenious acid with lime, carbonate of lime, or-an alkaline carbonate.
Having thus described myinvention and the several modes in which I contemplate its ap-" plication, I claim as my invention and desire to secure by. Letters. Patent ot' the United States- 1 The protecting of iron plates, beams, and
US43630D Improvement in preserving iron from corrosion Expired - Lifetime US43630A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744843A (en) * 1951-05-10 1956-05-08 Smith Corp A O Enamel bonding by the use of arsenic
US20090270698A1 (en) * 2005-10-21 2009-10-29 Masahiko Shioi Bioinformation measurement device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744843A (en) * 1951-05-10 1956-05-08 Smith Corp A O Enamel bonding by the use of arsenic
US20090270698A1 (en) * 2005-10-21 2009-10-29 Masahiko Shioi Bioinformation measurement device

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