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C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22C—ALLOYS
C22C3/00—Removing material from alloys to produce alloys of different constitution separation of the constituents of alloys
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Materials Engineering
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Metallurgy
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Organic Chemistry
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Carbon And Carbon Compounds
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Ceramic Products
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Abstract
Method for disintegrating tungsten carbide, titanium carbide and tantalum carbide for use in cutting tools consists of immersing these materials in relatively weak phosphoric acid at room temperature to dissolve the cobalt. The particles are freed in virtually the pre-sintered size and shape and are separated from the acid by centrifuging or filtering.
NL6903853A1969-03-121969-03-12Disintegration of sintered hard carbides
NL6903853A
(en)
PROCESS FOR THE PREPARATION OF A TUNGSTEN CARBIDE, CONTAINING CHROME AND NICKEL HARD METAL, AND OBJECTS CONSISTING WHOLLY OR LARGE PART OF A HARD METAL PREPARED THEREFORE.
METHOD FOR THE PREPARATION OF BENZOTHIOPYRAND DERIVATIVES WITH A BLOOD PRESSURE-INCREASING ACTION, METHOD FOR THE PREPARATION OF A MEDICINAL PRODUCT FROM IT AND A MEDICINAL PRODUCT THEREOF.