<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>32544</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2095</pageFirst>
    <pageLast>2099</pageLast>
    <pageNumber/>
    <edition/>
    <issue>17</issue>
    <volume>29</volume>
    <type>article</type>
    <publisherName>Materials Research Society</publisherName>
    <publisherPlace>Warrendale, Pa.</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Strategies for the selective volume sintering of ceramics</title>
    <abstract language="eng">The present study is dealing with the basic physics for a novel way to generate a free-formed ceramic body, not like common layer by layer, but directly by Selective Volume Sintering (SVS) in a compact block of ceramic powder. To penetrate with laser light into the volume of a ceramic powder compact it is necessary to investigate the light scattering properties of ceramic powders. Compared with polymers and metals, ceramic materials are unique as they offer a wide optical window of transparency. The optical window typically ranges from below 0.3 up to 5 µm wave length. In the present study thin layers of quartz glass (SiO2) particles have been prepared. As a function of layer thickness and the particle size, transmission and reflection spectra in a wave length range between 0.5 and 2.5 µm have been recorded. Depending on the respective particle size and by choosing a proper relation between particle size and wave length of the incident laser radiation, it is found that light can penetrate a powder compact up to a depth of a few millimeters. With an adjustment of the light absorption properties of the compact the initiation of sintering in the volume of the compact is possible.</abstract>
    <parentTitle language="eng">Journal of materials research</parentTitle>
    <identifier type="old">35613</identifier>
    <identifier type="doi">10.1557/jmr.2014.174</identifier>
    <identifier type="issn">0884-2914</identifier>
    <enrichment key="date_peer_review">12.02.2015</enrichment>
    <author>T. Mühler</author>
    <author>G. Helsch</author>
    <author>J.G. Heinrich</author>
    <author>Dongxu Yao</author>
    <author>S. Gräf</author>
    <author>F.A. Müller</author>
    <author>Jens Günster</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Additive Manufacturing</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>30295</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>7579</pageFirst>
    <pageLast>7582</pageLast>
    <pageNumber/>
    <edition/>
    <issue>5</issue>
    <volume>40</volume>
    <type>article</type>
    <publisherName>Ceramurgia</publisherName>
    <publisherPlace>Faenza</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Rapid fabrication of porous Si3N4/SiC ceramics via nitridation of silicon powder with ZrO2 as catalyst</title>
    <abstract language="eng">Porous Si3N4/SiC ceramics were rapidly prepared with Y2O3 as sintering additive and ZrO2 as nitrided catalyst, using Si and SiC as starting powders. Porous Si3N4/SiC ceramics with 5 wt% ZrO2 addition showed a complete nitridation and good mechanical properties (with a high porosity of 34.96%, flexural strength of 150±4.2 MPa, linear shrinkage of 0.02%). It was revealed that the reciprocal formation of ZrO2 and ZrN effectively enhanced nitridation by inhibiting the melting of silicon in micro-regions.</abstract>
    <parentTitle language="eng">Ceramics international</parentTitle>
    <identifier type="old">33258</identifier>
    <identifier type="doi">10.1016/j.ceramint.2013.11.098</identifier>
    <identifier type="issn">0272-8842</identifier>
    <identifier type="issn">1873-3956</identifier>
    <enrichment key="date_peer_review">06.03.2014</enrichment>
    <author>H.-L. Hu</author>
    <author>Y.-P. Zeng</author>
    <author>Y. Xia</author>
    <author>Dongxu Yao</author>
    <author>K.-H. Zuo</author>
    <author>Jens Günster</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>D. ZrO2</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rapid nitridation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Si3N4/SiC porous ceramics</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>31423</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>11</pageFirst>
    <pageLast>18</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>4</volume>
    <type>article</type>
    <publisherName>Göller</publisherName>
    <publisherPlace>Baden-Baden</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Submicrometer silica spheres generated by laser fuming</title>
    <abstract language="eng">The production of agglomerate-free SiO2 particles exhibiting a monomodal distribution of particle sizes of around 300 nm by means of direct laser fuming of micrometric SiO2 powders has been successfully demonstrated. With a 12 kW cw CO2 laser system, a production rate of up to 1 kilogram powder per hour was achieved. Almost ideal spherical amorphous SiO2 particles in a broad particle size distribution between 10 nm and several 100 nm (d50 ≈ 300 nm) were synthesized. Several observations suggest weak agglomeration forces between the particles. A temperature reduction of 200 °C for sintering powder compacts was observed.</abstract>
    <parentTitle language="eng">Journal of ceramic science and technology</parentTitle>
    <identifier type="old">34441</identifier>
    <identifier type="doi">10.4416/JCST2012-00033</identifier>
    <identifier type="issn">2190-9385</identifier>
    <note>Geburtsname von Wirth, Cynthia: Gomes, C. M. -  Birth name of Wirth, Cynthia: Gomes, C. M.</note>
    <author>Cynthia Wirth</author>
    <author>Ralf Müller</author>
    <author>Jens Günster</author>
    <author>T. Mühler</author>
    <author>R. Görke</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laser</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SiO2</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Nanopowder</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>31282</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>371</pageFirst>
    <pageLast>374</pageLast>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>33</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Oxford</publisherPlace>
    <creatingCorporation>European Ceramic Society</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Porous Si3N4 ceramics prepared via partial nitridation and SHS</title>
    <abstract language="eng">Porous Si3N4 ceramics were prepared via partial nitridation and self-propagating high temperature synthesis (SHS) process. Raw Si and additive Y2O3 were mixed and molded under 10 MPa into a compact, the compact was partial nitridation at 1300 °C to form a porous Si/Si3N4, and then it was buried in a Si/Si3N4 bed for SHS to obtain porous Si3N4 with rod-like β-Si3N4 morphology. The processing combined the advantages of the nitridation of Si and SHS with low cost, low shrinkage and time saving. Porous Si3N4 with a porosity of 47%, a strength of 143 MPa were obtained by this method.</abstract>
    <parentTitle language="eng">Journal of the European Ceramic Society</parentTitle>
    <identifier type="old">34289</identifier>
    <identifier type="doi">10.1016/j.jeurceramsoc.2012.08.033</identifier>
    <identifier type="issn">0955-2219</identifier>
    <identifier type="issn">1873-619X</identifier>
    <enrichment key="date_peer_review">01.09.2014</enrichment>
    <author>Dongxu Yao</author>
    <author>Y. Xia</author>
    <author>K.-h. Zuo</author>
    <author>D. Jiang</author>
    <author>Jens Günster</author>
    <author>Y.-P. Zeng</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Si3N4</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Strength</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Porosity</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>35177</id>
    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>138</pageFirst>
    <pageLast>140</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>141</volume>
    <type>article</type>
    <publisherName>Elsevier B.V.</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Gradient porous silicon nitride prepared via vacuum foaming and freeze drying</title>
    <abstract language="eng">Gradient porous silicon nitride (Si3N4) was fabricated by a novel vacuum foaming and freeze drying process. Aqueous Si3N4 slurries were foamed at vacuum pressure of 50–90 kPa, the green body was obtained by the freeze drying process, a gradient pore structure with porosities of 72–90% was achieved after pressureless sintering at 1680 °C. The porosity was increased with decreasing vacuum pressure. The pore structure consists of large pores (~100 μm) on top, medium pores (~45 μm) on the wall of the large pores, and small pores (~0.7 μm) in the matrix. Such gradient porous Si3N4 with macro- and micro-pores has potential application as high temperature filters.</abstract>
    <parentTitle language="eng">Materials letters</parentTitle>
    <identifier type="old">38332</identifier>
    <identifier type="doi">10.1016/j.matlet.2014.11.067</identifier>
    <identifier type="issn">0167-577x</identifier>
    <identifier type="issn">1873-4979</identifier>
    <enrichment key="date_peer_review">21.12.2015</enrichment>
    <author>Dongxu Yao</author>
    <author>Y. Xia</author>
    <author>K.-h. Zuo</author>
    <author>Y.-P. Zeng</author>
    <author>D. Jiang</author>
    <author>Jens Günster</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Silicon nitride</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Graded</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>32542</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>3461</pageFirst>
    <pageLast>3467</pageLast>
    <pageNumber/>
    <edition/>
    <issue>15</issue>
    <volume>34</volume>
    <type>article</type>
    <publisherName>Elsevier</publisherName>
    <publisherPlace>Oxford</publisherPlace>
    <creatingCorporation>European Ceramic Society</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">The effect of fabrication parameters on the mechanical properties of sintered reaction bonded porous Si3N4 ceramics</title>
    <abstract language="eng">Porous silicon nitride ceramics were prepared via sintered reaction bonded silicon nitride at 1680 °C. The grain size of nitrided Si3N4 and diameter of post-sintered ß-Si3N4 are controlled by size of raw Si. Porosity of 42.14–46.54% and flexural strength from 141 MPa to 165 MPa were obtained. During post-sintering with nano Y2O3 as sintering additive, nano Y2O3 can promote the formation of small ß-Si3N4 nuclei, but the large amount of ß-Si3N4 (&gt;20%) after nitridation also works as nuclei site for precipitation, in consequence the growth of fine ß-Si3N4 grains is restrained, the length is shortened, and the improvement on flexural strength is minimized. The effect of nano SiC on the refinement of the ß-Si3N4 grains is notable because of the pinning effect, while the effect of nano C on the refinement of the ß-Si3N4 grains is not remarkable due to the carbothermal reaction and increase in viscosity of the liquid phase.</abstract>
    <parentTitle language="eng">Journal of the European Ceramic Society</parentTitle>
    <identifier type="old">35611</identifier>
    <identifier type="doi">10.1016/j.jeurceramsoc.2014.06.018</identifier>
    <identifier type="issn">0955-2219</identifier>
    <identifier type="issn">1873-619X</identifier>
    <enrichment key="date_peer_review">12.02.2015</enrichment>
    <author>Dongxu Yao</author>
    <author>Y. Xia</author>
    <author>K.-h. Zuo</author>
    <author>D. Jiang</author>
    <author>Jens Günster</author>
    <author>Y.-P. Zeng</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Porous ceramics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Silicon nitride</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Reaction bonding</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Anisotropic grain growth</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ceramic</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>31283</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>610</pageFirst>
    <pageLast>614</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>265</volume>
    <type>article</type>
    <publisherName>North-Holland</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Selective laser densification of lithium aluminosilicate glass ceramic tapes</title>
    <abstract language="eng">Tapes, cast by blade deposition of a lithium aluminosilicate glass slurry, were sintered using a YAG-fiber laser, with the aim of finding suitable parameters for an additive manufacturing process based on layer-wise slurry deposition and selective laser densification. The influence of the laser parameters (output power and scan velocity) on the sintering was evaluated, by scanning electron microscopy and by X-ray diffraction, on the basis of the quality of the processed layer. Well densified samples could be obtained only in a small window of values for the output power and the scan velocity. The measurement of the width of a set of single scanned lines allowed also to estimate the minimum resolution of the system along the layer plane.</abstract>
    <parentTitle language="eng">Applied surface science</parentTitle>
    <identifier type="old">34290</identifier>
    <identifier type="doi">10.1016/j.apsusc.2012.11.058</identifier>
    <identifier type="url">http://ac.els-cdn.com/S0169433212020168/1-s2.0-S0169433212020168-main.pdf?_tid=4ba0c92c-31d4-11e4-84f1-00000aab0f02&amp;acdnat=1409575040_15d5256291262aca99cc5321374ab879</identifier>
    <identifier type="issn">0169-4332</identifier>
    <identifier type="issn">1873-5584</identifier>
    <enrichment key="date_peer_review">01.09.2014</enrichment>
    <author>Andrea Zocca</author>
    <author>P. Colombo</author>
    <author>Jens Günster</author>
    <author>T. Mühler</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Selective laser sintering (SLS)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laserwise-slurry-deposition (LSD)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Glass-ceramic</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>LAS</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>23763</id>
    <completedYear/>
    <publishedYear>2011</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>103</pageFirst>
    <pageLast>110</pageLast>
    <pageNumber/>
    <edition/>
    <issue>02</issue>
    <volume>02</volume>
    <type>article</type>
    <publisherName>Göller</publisherName>
    <publisherPlace>Baden-Baden</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Characterization of the crystallization behavior of laser-fused transparent microspheres with the eutectic composition Al2O3-Y2O3-ZrO2 (AYZ)</title>
    <abstract language="eng">Transparent microspheres with the eutectic composition 65 Al2O3-16 Y2O3-19 ZrO2 (mol%) have been produced by laser fusing with a CO2 laser. The influence of the starting material – not pre-calcined and pre-calcined – as well as the laser power on the resulting microspheres – was investigated. After fabrication, the microspheres were analyzed by means of XRD to quantify the amorphous content of the spheres as well as to identify the residual crystalline phases, with a laser granulometer to measure the particle sizes of the starting material and the resulting microspheres, with DSC to characterize the glass transition temperature and crystallization behavior, and with SEM to investigate the microstructure of the microspheres. The laser-treated materials consist of transparent and opaque beads as well as sintered particles. The amorphous amount in the samples was detected to be ~ 85 %. Based on these results transparent beads were collected and annealed over a range of temperatures to analyze the crystallization behavior.</abstract>
    <parentTitle language="eng">Journal of ceramic science and technology</parentTitle>
    <identifier type="old">26364</identifier>
    <identifier type="doi">10.4416/JCST2011-00010</identifier>
    <identifier type="issn">2190-9385</identifier>
    <author>C. Oelgardt</author>
    <author>Jens Günster</author>
    <author>J.G. Heinrich</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Eutectic ceramics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Al2O3-Y2O3-ZrO2</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Laser processing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crystallization behavior</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microstructure</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
</export-example>
