首页 > 最新文献

Scripta Metallurgica et Materialia最新文献

英文 中文
Electromigration activation energy in pure aluminum films deposited by partially ionized beam technique 部分电离束沉积纯铝膜的电迁移活化能
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)00450-A
O.V. Kononenko, E.D. Ivanov, V.N. Matveev, I.I. Khodos
{"title":"Electromigration activation energy in pure aluminum films deposited by partially ionized beam technique","authors":"O.V. Kononenko, E.D. Ivanov, V.N. Matveev, I.I. Khodos","doi":"10.1016/0956-716X(95)00450-A","DOIUrl":"10.1016/0956-716X(95)00450-A","url":null,"abstract":"","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 1981-1986"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00450-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74750406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Time-resolved SR study on evolution of dislocation structures in polycrystalline copper under uniaxial loading 单轴加载下多晶铜中位错结构演化的时间分辨SR研究
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)00445-2
C.H. Chang , Y.M. Koo , B.P. Tolochko
{"title":"Time-resolved SR study on evolution of dislocation structures in polycrystalline copper under uniaxial loading","authors":"C.H. Chang , Y.M. Koo , B.P. Tolochko","doi":"10.1016/0956-716X(95)00445-2","DOIUrl":"10.1016/0956-716X(95)00445-2","url":null,"abstract":"","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 1955-1960"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00445-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74967934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On the mechanism of ± 13 〈211〉 dipole formation in TiAl TiAl中±13 < 211 >偶极子形成机理的研究
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)00440-7
B.J. Inkson

101〉> superdislocations in TiAl can dissociate on discrete segments of the dislocation line and generate trailing ± 16112〉 or ± 13211〉 dipoles. A mechanism for ± 13211〉 dipole formation from a 101〉 superdislocation dissociated on two adjacent (111) planes is discussed. The non-coplanar 101〉 core structure may arise either from direct dissociation by the cross-slip of a 12101〉 superpartial, or by an initial 101〉 → 12110〉 + 12112〉 decomposition of the superdislocation and the subsequent pinning of the 12110〉 perfect dislocation by an immobile 16112〉 delocalised partial associated with a non-coplanar 12112〉 superdislocation core.

< 101 > >TiAl中的超位错可以在位错线的离散段上解离,产生±16 < 112 >或±13 < 211 >的拖尾偶极子。讨论了< 101 >超位错在相邻(111)平面上解离形成±13 < 211 >偶极子的机制。非共面< 101 >核心结构可能是由12 < 101 >超偏的交叉滑移直接解离引起的,也可能是由超位错的初始< 101 >→12 < 110 > + 12 < 112 >分解和随后由与非共面12 < 112 >超位错核心相关的不可移动的16 < 112 >离域部分钉住的12 < 110 >完美位错引起的。
{"title":"On the mechanism of ± 13 〈211〉 dipole formation in TiAl","authors":"B.J. Inkson","doi":"10.1016/0956-716X(95)00440-7","DOIUrl":"10.1016/0956-716X(95)00440-7","url":null,"abstract":"<div><p><span><math><mtext>〈</mtext><mtext>1</mtext><mtext>01〉&gt;</mtext></math></span> superdislocations in TiAl can dissociate on discrete segments of the dislocation line and generate trailing <span><math><mtext>± </mtext><mtext>1</mtext><mtext>6</mtext><mtext> 〈</mtext><mtext>11</mtext><mtext>2〉</mtext></math></span> or <span><math><mtext>± </mtext><mtext>1</mtext><mtext>3</mtext><mtext> 〈</mtext><mtext>2</mtext><mtext>11〉</mtext></math></span> dipoles. A mechanism for <span><math><mtext>± </mtext><mtext>1</mtext><mtext>3</mtext><mtext> 〈</mtext><mtext>2</mtext><mtext>11〉</mtext></math></span> dipole formation from a <span><math><mtext>〈</mtext><mtext>1</mtext><mtext>01〉</mtext></math></span> superdislocation dissociated on two adjacent (111) planes is discussed. The non-coplanar <span><math><mtext>〈</mtext><mtext>1</mtext><mtext>01〉</mtext></math></span> core structure may arise either from direct dissociation by the cross-slip of a <span><math><mtext>1</mtext><mtext>2</mtext><mtext> 〈</mtext><mtext>1</mtext><mtext>01〉</mtext></math></span> superpartial, or by an initial <span><math><mtext>〈</mtext><mtext>1</mtext><mtext>01〉 → </mtext><mtext>1</mtext><mtext>2</mtext><mtext> 〈</mtext><mtext>1</mtext><mtext>10〉 + </mtext><mtext>1</mtext><mtext>2</mtext><mtext> 〈</mtext><mtext>11</mtext><mtext>2〉</mtext></math></span> decomposition of the superdislocation and the subsequent pinning of the <span><math><mtext>1</mtext><mtext>2</mtext><mtext> 〈</mtext><mtext>1</mtext><mtext>10〉</mtext></math></span> perfect dislocation by an immobile <span><math><mtext>1</mtext><mtext>6</mtext><mtext> 〈</mtext><mtext>11</mtext><mtext>2〉</mtext></math></span> delocalised partial associated with a non-coplanar <span><math><mtext>1</mtext><mtext>2</mtext><mtext> 〈</mtext><mtext>11</mtext><mtext>2〉</mtext></math></span> superdislocation core.</p></div>","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 1929-1932"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00440-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81176540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Stacking faults in fatigued titanium single crystals 疲劳钛单晶中的层错
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)00422-R
Tan Xiao-Li, Gu Hai-Cheng
{"title":"Stacking faults in fatigued titanium single crystals","authors":"Tan Xiao-Li,&nbsp;Gu Hai-Cheng","doi":"10.1016/0956-716X(95)00422-R","DOIUrl":"10.1016/0956-716X(95)00422-R","url":null,"abstract":"","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 1977-1980"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00422-R","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83029927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Fatigue of nanocrystalline copper 纳米晶铜的疲劳
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)00441-W
A.B. Witney, P.G. Sanders, J.R. Weertman, J.A. Eastman
{"title":"Fatigue of nanocrystalline copper","authors":"A.B. Witney,&nbsp;P.G. Sanders,&nbsp;J.R. Weertman,&nbsp;J.A. Eastman","doi":"10.1016/0956-716X(95)00441-W","DOIUrl":"10.1016/0956-716X(95)00441-W","url":null,"abstract":"","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 2025-2030"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00441-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76239012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 78
Interfacial reactions in Al-Mg metal matrix composites reinforced with (SnSb) oxide coated SiC particles (SnSb)氧化物包覆SiC颗粒增强Al-Mg金属基复合材料的界面反应
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)00481-A
G. Gonzalez , L. Salvo , M. Suéry , G. L'Espérance
{"title":"Interfacial reactions in Al-Mg metal matrix composites reinforced with (SnSb) oxide coated SiC particles","authors":"G. Gonzalez ,&nbsp;L. Salvo ,&nbsp;M. Suéry ,&nbsp;G. L'Espérance","doi":"10.1016/0956-716X(95)00481-A","DOIUrl":"10.1016/0956-716X(95)00481-A","url":null,"abstract":"","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 1969-1975"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00481-A","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77712127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Author index of volume 33ager, Jr., and C.F. Windisch, Jr., Mater. Sci. and Eng., in press. 第33ager, Jr卷和C.F. Windisch, Jr卷的作者索引。科学。和Eng。,出版。
Pub Date : 1995-12-15 DOI: 10.1016/0956-716X(95)90034-H
{"title":"Author index of volume 33ager, Jr., and C.F. Windisch, Jr., Mater. Sci. and Eng., in press.","authors":"","doi":"10.1016/0956-716X(95)90034-H","DOIUrl":"https://doi.org/10.1016/0956-716X(95)90034-H","url":null,"abstract":"","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 12","pages":"Pages 2075-2082"},"PeriodicalIF":0.0,"publicationDate":"1995-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)90034-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137351324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanocomposite R2Fe14B/α-Fe and Sm2 (Fe-Ga)17Cx/α-Fe magnets
Pub Date : 1995-12-01 DOI: 10.1016/0956-716X(95)00426-V
L. Withanawasam ∗, Y.H. Zheng, G.C. Hadjipanayis, R.F. Krause

We have studied the crystallization, crystal structure, microstructure, and magnetic properties of melt-spun ribbons of R6(Fe-Nb)88B6 with RNd, Pr, Dy, Tb and Nd3.5(Fe-Nb)93B3.5 consisting of a mixture of exchange-coupled magnetically hard R2Fe14B and soft α-Fe phases. The as-spun ribbons of R-rich composition crystallize in two steps; for RNd, Pr, and Dy at first the Y3Fe62B14-type + α-Fe phases and subsequently they transform to 2:14:1 and α-Fe upon heating above 700 °C. The intermediate phase in the case of Tb6(Fe-Nb)88B6 is of the TbCu7-type. Very high remanences up to 145 emu/g with reduced remanences ranging from 0.6 to 0.7 were observed. The coercivity of the samples was found to vary with the R element and the hard phase content. The highest room temperature coercivity of 4.5 kOe was obtained in a Nd4Tb2(Fe-Nb)88B6 sample. The observed reversible demagnetization curves are characteristic of exchange-spring magnets.

A two-phase microstructure was also obtained in Sm-Fe-Ga-C ribbons consisting of exchange-coupled 2:17 and α-Fe phases after annealing in the temperature range of 700–800 °C. The highest coercive force (12.8 kOe) was obtained in samples annealed at 800 °C. Annealing at 700 °C led to finer grains with lower coercivities (5kOe) but higher remanences.

本文研究了含有RNd, Pr, Dy, Tb和Nd3.5(Fe-Nb)93B3.5的R6(Fe-Nb)88B6熔融纺丝带的结晶、晶体结构、微观结构和磁性能,该材料由交换偶联磁硬相R2Fe14B和软相α-Fe组成。富r成分的纺丝带分两步结晶;对于RNd、Pr和Dy,首先是y3fe62b14型+ α-Fe相,加热到700℃以上后转变为2:14:1和α-Fe相。Tb6(Fe-Nb)88B6的中间相为tbcu7型。观察到非常高的剩余量,高达145 emu/g,减少剩余量范围为0.6至0.7。样品的矫顽力随R元素和硬相含量的变化而变化。Nd4Tb2(Fe-Nb)88B6样品的室温矫顽力最高,为4.5 kOe。观察到的可逆退磁曲线是交换弹簧磁体的特征。在700 ~ 800℃退火后,Sm-Fe-Ga-C带中出现了交换耦合的2:17相和α-Fe相组成的两相组织。在800℃退火时,样品的矫顽力最高(12.8 kOe)。在700℃下退火,晶粒更细,矫顽力更低(5kOe),但剩余物含量更高。
{"title":"Nanocomposite R2Fe14B/α-Fe and Sm2 (Fe-Ga)17Cx/α-Fe magnets","authors":"L. Withanawasam ∗,&nbsp;Y.H. Zheng,&nbsp;G.C. Hadjipanayis,&nbsp;R.F. Krause","doi":"10.1016/0956-716X(95)00426-V","DOIUrl":"10.1016/0956-716X(95)00426-V","url":null,"abstract":"<div><p>We have studied the crystallization, crystal structure, microstructure, and magnetic properties of melt-spun ribbons of R<sub>6</sub>(Fe-Nb)<sub>88</sub>B<sub>6</sub> with RNd, Pr, Dy, Tb and Nd<sub>3.5</sub>(Fe-Nb)<sub>93</sub>B<sub>3.5</sub> consisting of a mixture of exchange-coupled magnetically hard R<sub>2</sub>Fe<sub>14</sub>B and soft α-Fe phases. The as-spun ribbons of R-rich composition crystallize in two steps; for RNd, Pr, and Dy at first the Y<sub>3</sub>Fe<sub>62</sub>B<sub>14</sub>-type + α-Fe phases and subsequently they transform to 2:14:1 and α-Fe upon heating above 700 °C. The intermediate phase in the case of Tb<sub>6</sub>(Fe-Nb)<sub>88</sub>B<sub>6</sub> is of the TbCu<sub>7</sub>-type. Very high remanences up to 145 emu/g with reduced remanences ranging from 0.6 to 0.7 were observed. The coercivity of the samples was found to vary with the R element and the hard phase content. The highest room temperature coercivity of 4.5 kOe was obtained in a Nd<sub>4</sub>Tb<sub>2</sub>(Fe-Nb)<sub>88</sub>B<sub>6</sub> sample. The observed reversible demagnetization curves are characteristic of exchange-spring magnets.</p><p>A two-phase microstructure was also obtained in Sm-Fe-Ga-C ribbons consisting of exchange-coupled 2:17 and α-Fe phases after annealing in the temperature range of 700–800 °C. The highest coercive force (12.8 kOe) was obtained in samples annealed at 800 °C. Annealing at 700 °C led to finer grains with lower coercivities (5kOe) but higher remanences.</p></div>","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 10","pages":"Pages 1765-1774"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00426-V","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75496166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Correlation between magnetic properties and phase-separated microstructure of electroless CoNiP perpendicular magnetic recording media 化学CoNiP垂直磁记录介质磁性能与相分离显微结构的关系
Pub Date : 1995-12-01 DOI: 10.1016/0956-716X(95)00414-Q
T. Homma , T. Osaka , Y. Yamazaki , T. Namikawa

Correlation between magnetic and structural properties of electroless-deposited CoNiP films for the use of perpendicular magnetic recording media was studied, focusing upon their phase-separated structure in nanometer scale. The media with various perpendicular coercivity, Hc(⊥), were examined and it was clarified that higher Hc(⊥) medium showed a clearer phase-separated condition, which was confirmed by the selective chemical-etching technique. It was strongly indicated that such a structure plays an important role in attaining a high Hc(⊥) and in forming an hcp structure in a film with a Ni-rich average composition.

研究了垂直磁记录介质化学沉积的CoNiP薄膜的磁性与结构性能的相关性,重点研究了其纳米尺度的相分离结构。对具有不同垂直矫顽力的介质Hc(⊥)进行了检查,并澄清了更高的Hc(⊥)介质显示出更清晰的相分离条件,这一点得到了选择性化学蚀刻技术的证实。研究结果强烈表明,这种结构在获得高Hc(⊥)和在具有富镍平均成分的膜中形成hcp结构方面起着重要作用。
{"title":"Correlation between magnetic properties and phase-separated microstructure of electroless CoNiP perpendicular magnetic recording media","authors":"T. Homma ,&nbsp;T. Osaka ,&nbsp;Y. Yamazaki ,&nbsp;T. Namikawa","doi":"10.1016/0956-716X(95)00414-Q","DOIUrl":"10.1016/0956-716X(95)00414-Q","url":null,"abstract":"<div><p>Correlation between magnetic and structural properties of electroless-deposited CoNiP films for the use of perpendicular magnetic recording media was studied, focusing upon their phase-separated structure in nanometer scale. The media with various perpendicular coercivity, Hc(⊥), were examined and it was clarified that higher Hc(⊥) medium showed a clearer phase-separated condition, which was confirmed by the selective chemical-etching technique. It was strongly indicated that such a structure plays an important role in attaining a high Hc(⊥) and in forming an hcp structure in a film with a Ni-rich average composition.</p></div>","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 10","pages":"Pages 1569-1573"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00414-Q","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79988940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Ferromagnetic grain boundary signature in die-upset Re-Fe-B magnets 模镦Re-Fe-B磁体的铁磁晶界特征
Pub Date : 1995-12-01 DOI: 10.1016/0956-716X(95)00410-W
L.Henderson Lewis, Yimei Zhu, D.O. Welch

Previous nanostructural and nanocompositional studies performed on the boundaries of deformed grains in two die-upset rare earth magnets with bulk compositions Nd13.75Fe80.25B6 and Pr13.75Fe80.25B6 indicate that the intergranular phase in many grain boundaries is enriched in iron relative to the bulk. We present here preliminary magnetic data that provide further evidence that this grain boundary phase is indeed iron-rich, and in fact appears to be ferromagnetic. Hysteresis loops were performed at 800 K on die-upset magnets with the above compositions. Each sample showed a clear hysteresis with coercivities between 34 and 40 Oe and an average remanence 4πBR of 6.8 G for the Nd-based sample and 10.3 G for the Pr-based sample. The ferromagnetic signals measured at high temperature in these magnets are attributed to the iron-rich grain boundary phase. The implications of this conclusion with respect to coercivity are discussed.

对两种块体成分分别为Nd13.75Fe80.25B6和Pr13.75Fe80.25B6的压型稀土磁体变形晶界的纳米结构和纳米成分研究表明,相对于块体,许多晶界的晶间相富含铁。我们在这里提出了初步的磁性数据,提供了进一步的证据,证明这种晶界相确实是富铁的,实际上似乎是铁磁性的。在800 K的温度下,用上述成分对翻模磁体进行了磁滞回线实验。每个样品都表现出明显的磁滞,矫顽力在34 ~ 40 Oe之间,nd基样品的平均残余4πBR为6.8 G, pr基样品的平均残余4πBR为10.3 G。这些磁体在高温下测量的铁磁信号归因于富铁的晶界相。讨论了这一结论对矫顽力的影响。
{"title":"Ferromagnetic grain boundary signature in die-upset Re-Fe-B magnets","authors":"L.Henderson Lewis,&nbsp;Yimei Zhu,&nbsp;D.O. Welch","doi":"10.1016/0956-716X(95)00410-W","DOIUrl":"10.1016/0956-716X(95)00410-W","url":null,"abstract":"<div><p>Previous nanostructural and nanocompositional studies performed on the boundaries of deformed grains in two die-upset rare earth magnets with bulk compositions Nd<sub>13.75</sub>Fe<sub>80.25</sub>B<sub>6</sub> and Pr<sub>13.75</sub>Fe<sub>80.25</sub>B<sub>6</sub> indicate that the intergranular phase in many grain boundaries is enriched in iron relative to the bulk. We present here preliminary magnetic data that provide further evidence that this grain boundary phase is indeed iron-rich, and in fact appears to be ferromagnetic. Hysteresis loops were performed at 800 K on die-upset magnets with the above compositions. Each sample showed a clear hysteresis with coercivities between 34 and 40 Oe and an average remanence 4πB<sub>R</sub> of 6.8 G for the Nd-based sample and 10.3 G for the Pr-based sample. The ferromagnetic signals measured at high temperature in these magnets are attributed to the iron-rich grain boundary phase. The implications of this conclusion with respect to coercivity are discussed.</p></div>","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 10","pages":"Pages 1775-1780"},"PeriodicalIF":0.0,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00410-W","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87852877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 35
期刊
Scripta Metallurgica et Materialia
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1