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  • 1
    Electronic Resource
    Electronic Resource
    Ion Implanted Nanolayers in AlN for Direct Bonding with Copper (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 99-100 (July 2004), p. 231-234 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Experiments to directly bond AlN with Cu were conducted for different pre-treatments of the bonded components. AlN substrates were implanted either with oxygen, or titanium or iron ions at low (15 keV) or high (70 keV) energy, or thermally oxidized. Some Ti-implanted samples were also thermally oxidized. The copper component was annealed and thermally oxidized. The best results, with respect to the bond shear strength, were obtained for low-energy implantation of oxygen and titanium
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/26/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.99-100.231.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Properties Dependency of Alumina - Steel Joints on Bonding Technique (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 45 (Oct. 2006), p. 1614-1619 
    Details
    ISSN: 1662-0356
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Natural Sciences in General , Technology
    Notes: The development of technologies for joining ceramics and metals is connected with anintroduction of new ceramic materials and new applications of ceramic-metal joints, to work in evermore difficult conditions. It concerns mainly ceramic-metal joints working at high and variabletemperatures (a facing layer of burners, turbine vanes, etc.) or in a chemically aggressiveenvironment (chemical apparatuses, purification plants). This paper presents the analysis of theinfluence of the bonding technique on thermal residual stresses generated in ceramic-metal jointsand their properties. Technological bonding tests were made using well-known diffusion bondingand powder metallization techniques, and with elaborated sintered Al2O3-Cr gradient interlayer.Numerical calculations (the finite elements method) of the state of thermal residual stresses, as wellas the verifying technological tests, were made for the following pair of materials: Al2O3 ceramics -heat resisting steel. There were also made tests of resistance for sudden temperature changes and foroxidation at high temperature. There was found a significant effect of the bonding techniques on thethermal residual stresses and properties of obtained alumina-steel joints
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.1614.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Influence of Oxygen and Titanium Modification of AlN Surface on the Properties of Direct Bonded AlN-Cu Joints (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 45 (Oct. 2006), p. 1537-1542 
    Details
    ISSN: 1662-0356
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Natural Sciences in General , Technology
    Notes: The paper presents the results concerning the formation of a ‘barrier’ layer on AlNceramic during its joining with copper by the Copper Direct Bonding (CDB) technique. Prior to thejoining, the AlN surface was modified by isothermal oxidation or by titanium ion implantation. Theeffects of the oxidation process temperature were examined within the temperature range from 673to 1473K. The surface of the ceramic was modified by titanium ion implantation at various iondoses and various accelerating voltages. The modified ceramic was joined with oxidized copper in anitrogen atmosphere with about 1.5ppm of oxygen, using a belt-type furnace at a temperature of1323K. The microstructure and phase changes induced on the surfaces of the joints were examined.The modification yielded a ‘barrier’ layer (TiN), which ensured a continuous pore-less contactbetween the materials being joined. The results obtained under all the experimental conditionsindicate that the implantation gives better effects than thermal oxidation. Ion implantation seems tobe ideally suited for these purposes. The preferential dose appears to be 5*E16ions/cm2 and thepreferential accelerating voltage – 15kV
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.1537.pdf
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Nickel Aluminides as a “Filler” for Joining Ceramics and Metals (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advances in science and technology Vol. 45 (Oct. 2006), p. 1608-1613 
    Details
    ISSN: 1662-0356
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Natural Sciences in General , Technology
    Notes: Reactive sintering of liquid Al with solid Ni resulting in the formation of intermetalliccompounds was used for joining parts made of heat-resistant steel and parts made of ZrO2 ceramic.The constituents of the binding layer (the ‘filler’) were introduced in the form of foils (e.g. in theAl/Ni/Al sequence) in-between the two parts to be joined. The heat-resistant steel joints (steel-/NiAl/-steel) were bonded in vacuum within the temperature range from 1023K to 1323K, at apressure of 6MPa for 30 to 60min. The ceramic joints of the ZrO2-/NiAl/-ZrO2 type were producedin an argon atmosphere within the temperature range from 1373K to 1723K at a pressure of 6MPafor a time from 30 to 60min. The joints of both types produced under these conditions had arequired structure and were suitable for exploitation at high temperatures in air. Based on the resultsobtained for these joints, we experimented successfully with joining zirconium ceramics with heatresistantsteel by using the reactive sintering of Ni-Al intermetallic compounds
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.1608.pdf
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    Paper (German National Licenses)
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