Effect of tungsten 0-8 wt.% on the oxidation of Co-Cr alloys
Identifieur interne : 000188 ( PascalFrancis/Checkpoint ); précédent : 000187; suivant : 000189Effect of tungsten 0-8 wt.% on the oxidation of Co-Cr alloys
Auteurs : A. Karaali [Algérie] ; K. Mirouh [Algérie] ; S. Hamamda [Algérie] ; P. Guiraldenq [France]Source :
- Computational materials science [ 0927-0256 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Oxydation, Microstructure, Addition tungstène, Préoxydation, Analyse microsonde électronique, Microscopie électronique balayage, Diffraction RX, Epaisseur, Diffusion(transport), Energie activation, Tungstène oxyde, Cobalt alliage, Chrome alliage, Couche oxyde, Chrome oxyde, Cobalt oxyde, Spinelles, Composé minéral, Métal transition composé, W, Cr O, Cr2O3, 66.
- Wicri :
- topic : Composé minéral.
English descriptors
- KwdEn :
- Activation energy, Chromium alloys, Chromium oxides, Cobalt alloys, Cobalt oxides, Diffusion, Electron microprobe analysis, Inorganic compounds, Microstructure, Oxidation, Oxide layer, Preoxidation, Scanning electron microscopy, Spinels, Thickness, Transition element compounds, Tungsten additions, Tungsten oxides, XRD.
Abstract
The nature and the morphology of the formed oxide layers at the alloys' surface have great importance on the quality of the ceramic/metal bond. This study shows the effect of the tungsten addition on the formation and the growth of the oxide layers on the Co-Cr alloys in preoxidation temperature range 950-1050 °C, thus including the temperature range of the ceramisation process that these alloys will undergo later. Their characterization, by microprobe analysis, scanning electron microscopy (SEM), spectrography with luminescent discharge (SLD) and low angle X-ray diffraction. reveals the formation of two distinct layers: the first one, from the external surface, is formed only of pure CoO, while the second one is a mixture of Cr2O3 particles and cobalt-tungsten oxide dispersed in a CoCr2O4 matrix. The tungsten addition up to 8 wt.% modifies considerably the thickness of the formed layers as a consequence of its accumulating in the second layer, thus blocking the cobalt diffusion towards the alloy surface.
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Hamamda</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Propriétés Thermodynamiques et Traitement de Surfaces des Matériaux, Département de Physique Faculté des Sciences, Université Mentouri Constantine, Route de Ain El-bey 25000</s1><s2>Constantine</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Constantine</wicri:noRegion></affiliation></author><author><name sortKey="Guiraldenq, P" sort="Guiraldenq, P" uniqKey="Guiraldenq P" first="P." last="Guiraldenq">P. Guiraldenq</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Département STMS, Ecole Centrale de Lyon 69131</s1><s2>Ecully</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>Ecully</wicri:noRegion><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">05-0183910</idno><date when="2005">2005</date><idno type="stanalyst">PASCAL 05-0183910 INIST</idno><idno type="RBID">Pascal:05-0183910</idno><idno type="wicri:Area/PascalFrancis/Corpus">000193</idno><idno type="wicri:Area/PascalFrancis/Curation">000102</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000188</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000188</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Effect of tungsten 0-8 wt.% on the oxidation of Co-Cr alloys</title><author><name sortKey="Karaali, A" sort="Karaali, A" uniqKey="Karaali A" first="A." last="Karaali">A. Karaali</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Propriétés Thermodynamiques et Traitement de Surfaces des Matériaux, Département de Physique Faculté des Sciences, Université Mentouri Constantine, Route de Ain El-bey 25000</s1><s2>Constantine</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Constantine</wicri:noRegion></affiliation></author><author><name sortKey="Mirouh, K" sort="Mirouh, K" uniqKey="Mirouh K" first="K." last="Mirouh">K. Mirouh</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Propriétés Thermodynamiques et Traitement de Surfaces des Matériaux, Département de Physique Faculté des Sciences, Université Mentouri Constantine, Route de Ain El-bey 25000</s1><s2>Constantine</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Constantine</wicri:noRegion></affiliation></author><author><name sortKey="Hamamda, S" sort="Hamamda, S" uniqKey="Hamamda S" first="S." last="Hamamda">S. Hamamda</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Propriétés Thermodynamiques et Traitement de Surfaces des Matériaux, Département de Physique Faculté des Sciences, Université Mentouri Constantine, Route de Ain El-bey 25000</s1><s2>Constantine</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Algérie</country><wicri:noRegion>Constantine</wicri:noRegion></affiliation></author><author><name sortKey="Guiraldenq, P" sort="Guiraldenq, P" uniqKey="Guiraldenq P" first="P." last="Guiraldenq">P. Guiraldenq</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Département STMS, Ecole Centrale de Lyon 69131</s1><s2>Ecully</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>Ecully</wicri:noRegion><placeName><region type="region" nuts="2">Auvergne-Rhône-Alpes</region><region type="old region" nuts="2">Rhône-Alpes</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Computational materials science</title><title level="j" type="abbreviated">Comput. mater. sci.</title><idno type="ISSN">0927-0256</idno><imprint><date when="2005">2005</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Computational materials science</title><title level="j" type="abbreviated">Comput. mater. sci.</title><idno type="ISSN">0927-0256</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activation energy</term><term>Chromium alloys</term><term>Chromium oxides</term><term>Cobalt alloys</term><term>Cobalt oxides</term><term>Diffusion</term><term>Electron microprobe analysis</term><term>Inorganic compounds</term><term>Microstructure</term><term>Oxidation</term><term>Oxide layer</term><term>Preoxidation</term><term>Scanning electron microscopy</term><term>Spinels</term><term>Thickness</term><term>Transition element compounds</term><term>Tungsten additions</term><term>Tungsten oxides</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Oxydation</term><term>Microstructure</term><term>Addition tungstène</term><term>Préoxydation</term><term>Analyse microsonde électronique</term><term>Microscopie électronique balayage</term><term>Diffraction RX</term><term>Epaisseur</term><term>Diffusion(transport)</term><term>Energie activation</term><term>Tungstène oxyde</term><term>Cobalt alliage</term><term>Chrome alliage</term><term>Couche oxyde</term><term>Chrome oxyde</term><term>Cobalt oxyde</term><term>Spinelles</term><term>Composé minéral</term><term>Métal transition composé</term><term>W</term><term>Cr O</term><term>Cr2O3</term><term>66</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Composé minéral</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The nature and the morphology of the formed oxide layers at the alloys' surface have great importance on the quality of the ceramic/metal bond. This study shows the effect of the tungsten addition on the formation and the growth of the oxide layers on the Co-Cr alloys in preoxidation temperature range 950-1050 °C, thus including the temperature range of the ceramisation process that these alloys will undergo later. Their characterization, by microprobe analysis, scanning electron microscopy (SEM), spectrography with luminescent discharge (SLD) and low angle X-ray diffraction. reveals the formation of two distinct layers: the first one, from the external surface, is formed only of pure CoO, while the second one is a mixture of Cr<sub>2</sub>O<sub>3</sub> particles and cobalt-tungsten oxide dispersed in a CoCr<sub>2</sub>O<sub>4</sub> matrix. The tungsten addition up to 8 wt.% modifies considerably the thickness of the formed layers as a consequence of its accumulating in the second layer, thus blocking the cobalt diffusion towards the alloy surface.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0927-0256</s0></fA01><fA03 i2="1"><s0>Comput. mater. sci.</s0></fA03><fA05><s2>33</s2></fA05><fA06><s2>1-3</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Effect of tungsten 0-8 wt.% on the oxidation of Co-Cr alloys</s1></fA08><fA09 i1="01" i2="1" l="ENG"><s1>Proceedings of the E-MRS 2004, Spring Meeting - Symposium H: Atomic materials design: modelling and characterization, Strasbourg, France, 24-28 May, 2004</s1></fA09><fA11 i1="01" i2="1"><s1>KARAALI (A.)</s1></fA11><fA11 i1="02" i2="1"><s1>MIROUH (K.)</s1></fA11><fA11 i1="03" i2="1"><s1>HAMAMDA (S.)</s1></fA11><fA11 i1="04" i2="1"><s1>GUIRALDENQ (P.)</s1></fA11><fA12 i1="01" i2="1"><s1>ESTEVE (Alain)</s1><s9>ed.</s9></fA12><fA12 i1="02" i2="1"><s1>DJAFARI-ROUHANI (Mehdi)</s1><s9>ed.</s9></fA12><fA12 i1="03" i2="1"><s1>GREER (Jim)</s1><s9>ed.</s9></fA12><fA12 i1="04" i2="1"><s1>KORKIN (Anatoli)</s1><s9>ed.</s9></fA12><fA14 i1="01"><s1>Laboratoire des Propriétés Thermodynamiques et Traitement de Surfaces des Matériaux, Département de Physique Faculté des Sciences, Université Mentouri Constantine, Route de Ain El-bey 25000</s1><s2>Constantine</s2><s3>DZA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></fA14><fA14 i1="02"><s1>Département STMS, Ecole Centrale de Lyon 69131</s1><s2>Ecully</s2><s3>FRA</s3><sZ>4 aut.</sZ></fA14><fA15 i1="01"><s1>Laboratoire d'analyse et d'architecture des systèmes (LAAS-CNRS), 7, Ave du Colonel Roche</s1><s2>Toulouse 31077</s2><s3>FRA</s3><sZ>1 aut.</sZ></fA15><fA15 i1="02"><s1>Toulouse University</s1><s2>Toulouse</s2><s3>FRA</s3><sZ>2 aut.</sZ></fA15><fA15 i1="03"><s1>NMRC, University College</s1><s2>Cork</s2><s3>IRL</s3><sZ>3 aut.</sZ></fA15><fA15 i1="04"><s1>Nano and Giga Solutions, Inc.</s1><s2>Gilbert, AZ</s2><s3>USA</s3><sZ>4 aut.</sZ></fA15><fA18 i1="01" i2="1"><s1>European Network ATOMCAD</s1><s3>EUR</s3><s9>patr.</s9></fA18><fA18 i1="02" i2="1"><s1>European Materials Research Society</s1><s3>EUR</s3><s9>patr.</s9></fA18><fA20><s1>37-43</s1></fA20><fA21><s1>2005</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>26032</s2><s5>354000125038020060</s5></fA43><fA44><s0>0000</s0><s1>© 2005 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>25 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>05-0183910</s0></fA47><fA60><s1>P</s1><s2>C</s2></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Computational materials science</s0></fA64><fA66 i1="01"><s0>NLD</s0></fA66><fC01 i1="01" l="ENG"><s0>The nature and the morphology of the formed oxide layers at the alloys' surface have great importance on the quality of the ceramic/metal bond. This study shows the effect of the tungsten addition on the formation and the growth of the oxide layers on the Co-Cr alloys in preoxidation temperature range 950-1050 °C, thus including the temperature range of the ceramisation process that these alloys will undergo later. Their characterization, by microprobe analysis, scanning electron microscopy (SEM), spectrography with luminescent discharge (SLD) and low angle X-ray diffraction. reveals the formation of two distinct layers: the first one, from the external surface, is formed only of pure CoO, while the second one is a mixture of Cr<sub>2</sub>O<sub>3</sub> particles and cobalt-tungsten oxide dispersed in a CoCr<sub>2</sub>O<sub>4</sub> matrix. The tungsten addition up to 8 wt.% modifies considerably the thickness of the formed layers as a consequence of its accumulating in the second layer, thus blocking the cobalt diffusion towards the alloy surface.</s0></fC01><fC02 i1="01" i2="3"><s0>001B60F</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Oxydation</s0><s5>02</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Oxidation</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Microstructure</s0><s5>03</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Microstructure</s0><s5>03</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Addition tungstène</s0><s5>04</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Tungsten additions</s0><s5>04</s5></fC03><fC03 i1="04" i2="X" l="FRE"><s0>Préoxydation</s0><s5>05</s5></fC03><fC03 i1="04" i2="X" l="ENG"><s0>Preoxidation</s0><s5>05</s5></fC03><fC03 i1="04" i2="X" l="SPA"><s0>Preoxidación</s0><s5>05</s5></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Analyse microsonde électronique</s0><s5>06</s5></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Electron microprobe analysis</s0><s5>06</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Microscopie électronique balayage</s0><s5>07</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Scanning electron microscopy</s0><s5>07</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Diffraction RX</s0><s5>08</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>XRD</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Epaisseur</s0><s5>09</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Thickness</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Diffusion(transport)</s0><s5>10</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Diffusion</s0><s5>10</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Energie activation</s0><s5>11</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Activation energy</s0><s5>11</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Tungstène oxyde</s0><s2>NK</s2><s5>15</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Tungsten oxides</s0><s2>NK</s2><s5>15</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Cobalt alliage</s0><s5>16</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Cobalt alloys</s0><s5>16</s5></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Chrome alliage</s0><s5>17</s5></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Chromium alloys</s0><s5>17</s5></fC03><fC03 i1="14" i2="X" l="FRE"><s0>Couche oxyde</s0><s5>18</s5></fC03><fC03 i1="14" i2="X" l="ENG"><s0>Oxide layer</s0><s5>18</s5></fC03><fC03 i1="14" i2="X" l="SPA"><s0>Capa óxido</s0><s5>18</s5></fC03><fC03 i1="15" i2="3" l="FRE"><s0>Chrome oxyde</s0><s2>NK</s2><s5>19</s5></fC03><fC03 i1="15" i2="3" l="ENG"><s0>Chromium oxides</s0><s2>NK</s2><s5>19</s5></fC03><fC03 i1="16" i2="3" l="FRE"><s0>Cobalt oxyde</s0><s2>NK</s2><s5>20</s5></fC03><fC03 i1="16" i2="3" l="ENG"><s0>Cobalt oxides</s0><s2>NK</s2><s5>20</s5></fC03><fC03 i1="17" i2="3" l="FRE"><s0>Spinelles</s0><s5>21</s5></fC03><fC03 i1="17" i2="3" l="ENG"><s0>Spinels</s0><s5>21</s5></fC03><fC03 i1="18" i2="3" l="FRE"><s0>Composé minéral</s0><s5>48</s5></fC03><fC03 i1="18" i2="3" l="ENG"><s0>Inorganic compounds</s0><s5>48</s5></fC03><fC03 i1="19" i2="3" l="FRE"><s0>Métal transition composé</s0><s5>49</s5></fC03><fC03 i1="19" i2="3" l="ENG"><s0>Transition element compounds</s0><s5>49</s5></fC03><fC03 i1="20" i2="3" l="FRE"><s0>W</s0><s4>INC</s4><s5>52</s5></fC03><fC03 i1="21" i2="3" l="FRE"><s0>Cr O</s0><s4>INC</s4><s5>53</s5></fC03><fC03 i1="22" i2="3" l="FRE"><s0>Cr2O3</s0><s4>INC</s4><s5>54</s5></fC03><fC03 i1="23" i2="3" l="FRE"><s0>66</s0><s4>INC</s4><s5>56</s5></fC03><fN21><s1>122</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA><pR><fA30 i1="01" i2="1" l="ENG"><s1>E-MRS 2004 Spring Meeting - Symposium H</s1><s3>Strasbourg FRA</s3><s4>2004-05-24</s4></fA30></pR></standard></inist><affiliations><list><country><li>Algérie</li><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li></region></list><tree><country name="Algérie"><noRegion><name sortKey="Karaali, A" sort="Karaali, A" uniqKey="Karaali A" first="A." last="Karaali">A. Karaali</name></noRegion><name sortKey="Hamamda, S" sort="Hamamda, S" uniqKey="Hamamda S" first="S." last="Hamamda">S. Hamamda</name><name sortKey="Mirouh, K" sort="Mirouh, K" uniqKey="Mirouh K" first="K." last="Mirouh">K. Mirouh</name></country><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Guiraldenq, P" sort="Guiraldenq, P" uniqKey="Guiraldenq P" first="P." last="Guiraldenq">P. Guiraldenq</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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