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  • 2005-2009  (20)
  • 1960-1964
  • 1950-1954
  • 2006  (20)
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Materialart
Erscheinungszeitraum
  • 2005-2009  (20)
  • 1960-1964
  • 1950-1954
Jahr
  • 11
    Digitale Medien
    Digitale Medien
    Interdiffusion Behavior of Electroplated Platinum-Iridium Alloys on Nickel-Base Single Crystal Superalloy TMS-82+ (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 522-523 (Aug. 2006), p. 293-300 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: In the present study, platinum-iridium alloys (Ir = 15.8, 27.3, 36.1, 100at.%) wereelectroplated on a nickel-base single crystal superalloy TMS-82+ followed by a diffusion treatmentat 1373K for 1 h. Interdiffusion behavior between the Pt-Ir films and substrates was investigated interms of chemical composition, phase constitution and morphology. X-ray analysis revealed thatannealed specimens consisted of several fcc solid solutioned phases with various lattice parameters,together with ordered intermetallic compounds (L12-(Pt,Ni)3Al and B2-(Ir,Ni)Al), due to the inwarddiffusion of Pt and Ir from the electrodeposited films to the superalloy substrates, and the outwarddiffusion of solute elements (Ni, Al, Cr, Co) in the superalloy substrates into the films duringannealing. The depth concentration analysis indicated that the Pt-36.1Ir film effectively retarded theoutward diffusion of solute elements, especially nickel, from the substrate
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.522-523.293.pdf
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  • 12
    Digitale Medien
    Digitale Medien
    Study on the New Tooth Profile of Silent Chain (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 853-856 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: The polygon action and the meshing impact of silent chain can be reduced by the change ofthe link plate structure. However, the change of the link plate structure may result in the complexityof manufacture. A new modified involute profile for sprocket is put forward based on the law ofmotion between the link plate and the driving sprocket. The modified involute profile is obtained byuse of a unified program between VB and AutoCAD. The kinematic and dynamic simulation of silentchain with the new profile is performed by use of ADAMS. The results show that the polygon actionof silent chain mechanism can be reduced and the smoothness of the silent chain drive is effectivelyimproved as the sprocket is of the new modified involute profile
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.853.pdf
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  • 13
    Digitale Medien
    Digitale Medien
    The Study of Tool Wear and Breakage Based on the Characteristic Analysis of Acoustic Spectrum (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 197-200 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: Tool monitoring is an important factor to restrict the improvement of productionefficiency, machining quality and automation level. The monitoring of the tool wear and breakageconditions on YCM-V116B machining center was studied, and the acquired milling sound signalswere analyzed in detail. By means of the classical time-frequency analysis, it was discovered thatthe wear sound had its own characteristic frequency band, and the frequency component within thefrequency band would change according to the change of wear conditions. So that the frequencycomponent within the frequency band will be a good indicator to monitor the tool wear conditionsexcellently. On the other hand, the tool breakage sound is a random signal that a transient change inamplitude is produced probably when tool breaks. The tool breakage conditions can be detectedexactly by the advantages of wavelet decomposition techniques. The analysis implies that the soundgenerated during the machining process can be used to monitor tool conditions, which provides anew approach to the sound applications in tool monitoring domain
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.197.pdf
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  • 14
    Digitale Medien
    Digitale Medien
    Characterization of a Piezoresistive Microcantilever as a Sensor for Detecting the Bio-Molecules (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 510-511 (Mar. 2006), p. 1090-1093 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: We propose an electrical detection method for detecting the various bio-moleculeseffectively with microcantilevers. The piezoresistive microcantilevers were fabricated employing surface micromachining technique that has attractive advantages in terms of cost efficiency, simplicity, and ability of fabricating in array. The fluid cell system for injection of bio-molecular solution is fabricated using polydimethylsiloxane (PDMS) and a fused silica glass. The microcantilever is deflected with respect to the difference of the surface stress caused by theformation of self-assembled bio-molecules on the gold coated side of the microcantilever. We confirmed that the deflections occurred by the bio-molecule adsorption and microcantilever can be widely used to a &-TAS and a lab-on-a-chip as a sensor for the potential detection of various biomolecules
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.510-511.1090.pdf
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  • 15
    Digitale Medien
    Digitale Medien
    FEM Analysis of Grinding Damage Mechanisms for Ceramics Materials (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 432-435 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: The utilization of ceramics materials for structural components has been widespreadbecause of their excellent properties. But the ceramic components require high precision andintegrity of surface. The grinding is the main productive technique for finishing the ceramiccomponents in the manufacturing industry, but it is prone to surface and sub-surface damage.Consequently the induced damage will reduce the life of the component, even leads to failure. So,to improve grinding quality and reduce grinding damage, it is important to understand the damagemechanisms and process for ceramic materials. In this paper, attempts are made to build a damagemodel and to compute damage variable D. The damage variable will be used in the furthercomputation. The research effort made may be the foundation of the ceramic components designand the optimization and control of ceramic grinding process
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.432.pdf
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  • 16
    Digitale Medien
    Digitale Medien
    Application of an Intelligent Force Controller for Robotic Deburring Process (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 532-533 (Dec. 2006), p. 456-459 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: To achieve the desired dynamic impedance and the smooth chamfer contour, someadaptive controls and intelligent control schemes are incorporated in the impedance control foruncertain constrained robot systems. Most of them still result in an uneven chamfer for itscharacteristics in nature as the burrs vary highly. In this paper, an intelligent force controller based onimpedance control with a neural network compensator is proposed for the robotic deburring process.The compensator is used to deal with the various burrs by modifying the input command according tothe contact force and reference position. The performance of the intelligent force controller iscompared with the conventional impedance control. The effectiveness of the proposed approach istestified by simulation experiments of the robotic deburring process
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.456.pdf
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  • 17
    Digitale Medien
    Digitale Medien
    Characteristics of Thin Film of Nano-Hybrid Synthesized from Acrylic Resin and Colloidal Silca-Silane Sol (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 510-511 (Mar. 2006), p. 218-221 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: Organic-inorganic hybrid blends were prepared in variation with the ratio of sol solution to urethaneacrylic resin. Such sol solutions were synthesized from colloidal silica (CS)/ methyltrimethoxysilane(MTMS)/vinyltrimethoxysilane(VTMS) by sol-gel reaction through two step reactions. Thin films of organic-inorganic hybrid blends were prepared using spin coater on the glass and aluminum sheets. In order to understand surface properties of thin films, contact angle androughness were measured. Surface contact angle and roughness of thin films increased as the amount of sol solution increased. Thermal dissociation temperature of thin films was observed using TGA. Thin films were stable until 270 oC. Thermal dissociation temperature of thin films improved with increasing sol solution. In order to observe insulation property of thin films, electrical resistance measurements were performed. Surface and volume resistance of thin films increased as the amount of sol solution increased
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.510-511.218.pdf
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  • 18
    Digitale Medien
    Digitale Medien
    Chipless Forming Process Using Rotary Swaging Machine with Four-Dies (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 510-511 (Mar. 2006), p. 242-245 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: The rotary swaging process for producing solid bars, tubes or wires is often used toobtain the chipless forming process compared with the conventional process such as the machining and welding operation. Furthermore, machined chip, dust particles, harmful gas, and surface contamination to be commonly generated at hot working during the conventional process could be eliminated as the swaging process is applied and conducted at room temperature. Experiments for swaged product were performed to analyze the influence of the swaging process on the mechanicalproperties and dimensional precision in terms of surface roughness, surface hardness, and deviation of formed dimension. The changes of dimensional precision in swaged product are also checked out and considered for various process parameters such as the forming speed and the reduction in theouter diameter. Based on the experimental results, the surface roughness is improved under the swaging process. The weight of rod shift is reduced by about 15 % from 223.5 g to 190.2 g. Thus the number of operations to produce the final product under the conventional process is larger than that under the swaging process to be able to omit the machining and welding operation, etc. Thispaper demonstrates that a rotary swaging process turns out to be an environment-friendly forming process or chipless forming process without the machined chip
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.510-511.242.pdf
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  • 19
    Digitale Medien
    Digitale Medien
    The Cavitation Behavior of Fe-Cr-C-Si-Ni Alloys (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 510-511 (Mar. 2006), p. 274-277 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: The cavitation erosion behavior of Fe-Cr-C-Si-xNi (x = 1, 2 and 3 wt.%) alloys were investigated for 50 hours using a 20 kHz vibratory cavitation erosion test equipment. 1 wt.% Ni added Fe-based hardfacing alloy showed excellent cavitation erosion resistance, comparable to the stellite 6. Above 1 wt.% Ni, however, the erosion resistance deteriorated quickly. It is conjectured that Ni addition above 1 wt.%, which has been shown to increase the stacking fault energy (SFE),resulted in reduction of the work hardening rate during the erosion test. Therefore, the enhanced cavitation erosion resistance of the 1 wt.% Ni alloy over the 2 and 3 wt.% Ni alloys could be explained in terms of the SFE, Ms temperature and work hardening
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.510-511.274.pdf
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  • 20
    Digitale Medien
    Digitale Medien
    Electrical Properties of the La〈sub〉2〈/sub〉O〈sub〉3〈/sub〉/4H-SiC Interface Prepared by Atomic Layer Deposition Using La(iPrCp)〈sub〉3〈/sub〉 and H〈sub〉2〈/sub〉O (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 527-529 (Oct. 2006), p. 1083-1086 
    Details
    ISSN: 1662-9752
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: The La2O3 and Al2O3/La2O3 layers were grown on 4H-SiC by atomic layer deposition(ALD) method. The electrical properties of La2O3 on 4H-SiC were examined usingmetal-insulator-semiconductor (MIS) structures of Pt/La2O3(18nm)/4H-SiC andPt/Al2O3(10nm)/La2O3(5nm)/4H-SiC. For the Pt/La2O3(18nm)/4H-SiC structure, even though theleakage current density was slightly reduced after the rapid thermal annealing at 500 oC,accumulation capacitance was gradually increased with increasing bias voltage due to a high leakagecurrent. On the other hand, since the leakage current in the accumulation regime was decreased forthe Pt/Al2O3/La2O3/4H-SiC MIS structure owing to the capped Al2O3 layer, the capacitance wassaturated. But the saturation capacitance was strongly dependent on frequency, indicating a leakyinterfacial layer formed between the La2O3 and SiC during the fabrication process ofPt/Al2O3(10nm)/ La2O3(5nm)/ 4H-SiC structure
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.527-529.1083.pdf
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