BRAZING AND SOLDERING OF BERYLLIUM

Journal Article · Thu Sep 01 00:00:00 EDT 1960 · Welding J. (N.Y.)

OSTI ID:4160432

Keil, R W; Hanks, G S; Taub, J M

The brazing of be to itself by furnace-brazing, inductionbrazing, and soft-soldering techniques was investigated. Undercoatings for subsequent tinning, soldering, and brazing were applied by flame spraying, electrodeposition, torch coating, and molten-metal dipping. Since be possesses strong reactivity with O, particularly at elevated tempera- tures, it was necessary to carry out the brazing operations in a vacuum or inert atmosphere. Fluxes were not used in the actual joining operation because of possible corrosion problems presented by their use. Good surface coatings were obtained by electroplating be with Cu or Ag from cyanide or acid solutions. Furuace brazing in an electric muffle furnace was most successful when pure Ag, BAg-1, or Ag--30 wt.% aluminum was used with samples mechanically cleaned or chemically etched. Excellent joints were obtained using Mg to precoat the be. Precoating with the (Mg and subsequent brazing was best accomplished by induction heating. Soft soldering was found to be an effective method of joining be when the design of the joint permitted the use of a press fit. (auth) manner; 98.5% of the original thorium was precipitated. In another experiment, an ore with a thorium/uranium ratio of 10 was treated; the thorium sulfate precipitate consisted of 99.95% thorium and 0.05% uranium; whereas, the solution retaied 1% of the total thorium. (D.L.C.)

• Research Organization: Los Alamos Scientific Lab., N. Mex.
• NSA Number: NSA-14-022977
• OSTI ID: 4160432
• Journal Information: Welding J. (N.Y.), Vol. Vol: 39; Other Information: Orig. Receipt Date: 31-DEC-60
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ENGINEERING AND EQUIPMENT
ACIDITY
ALUMINUM ALLOYS
BERYLLIUM
BRAZING
CHEMICAL REACTIONS
CLEANING
COATING
COMBUSTION
COPPER
CORROSION PROTECTION
CYANIDES
ELECTRODEPOSITION
ELECTROPLATING
ETCHING
FURNACES
HEATING
HIGH TEMPERATURE
INDUCTION
INERT GASES
JOINTS
LIQUID METALS
MAGNESIUM
OXYGEN
SILVER
SILVER ALLOYS
SILVER BORIDES
SOLDERING
SOLUTIONS
SURFACES
TIN
VACUUM