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  • 1
    Electronic Resource
    Electronic Resource
    Active Braze Coated Diamond (ABCD) (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 329 (Jan. 2007), p. 725-730 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The thick braze alloy coating can hold diamond much firmer than thin element coatings(Ti, Cr, Si) of commercial saw diamond grits. Moreover, the braze alloy can form metallurgicalbonding readily with the metal matrix of saw segments. As a result, diamond saws that employABCD can cut much faster and last much longer than conventional designs.ABCD can be planted in metal matrix to form three dimensional pattern, the chemical bondingof diamond and its controlled spacing can virtually eliminate diamond loss due to pullouts anddiamond breakage due to excessive impact force. The greatly increased number of workingcrystals can extend the segment life by one order of magnitude.With the thick coating, ABCD can join together to form needles or plates that could not bepossible with thinly coated diamond. The ABCD needles or plates can be planted or arranged in ametal matrix to form a three-dimensional structure. Such unique designs can greatly expand thefunctions of diamond saws
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.329.725.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    The Metallization of Diamond Grits (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 534-536 (Jan. 2007), p. 1137-1140 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Diamond grits in tools are typically held in a sintered matrix of metal powder (e.g. Co). Thebonding between diamond and the matrix is essentially mechanical. As a result, most diamondgrits are easily knocked out from the tool during cutting. The diamond industry has designedvarious metal coatings (e.g. Ti, Cr, Si) to improve the adherence of diamond grits in the matrix, butthe improvements have been modest (e.g. up to 50% increase of tool life).A revolutionary “Active Braze Coated Diamond” (ABCD) is now being developed. Thecoating of ABCD is much thicker (e.g. 20 microns) than conventional ones (about 1 micron). Themolten braze is wetted and reacted with diamond to form strong chemical bond at the interface sothat the diamond does not become knocked out of tools.ABCD is coated with a nickel alloy that can form metallurgical diffusion bonds readily withthe metal matrix of the tool. In essence, ABCD turns diamond into a metal grain so that thediamond tools can be made by conventional powder metallurgical process without being concernedabout the poor bonding between matrix metal powder and the diamond as before
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.1137.pdf
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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