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Thermal and mechanical properties of Mg–Al–Si–O–N glasses with up to 6.2 at.% nitrogen 高达6.2 at的Mg-Al-Si-O-N玻璃的热力学性能。%氮
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-20 DOI: 10.1111/jace.20487
Theany To, Chouaib Mhamdia, Sharafat Ali, Patrick Houizot, Karolina Milewska, Franck Tessier, Alain Moreac, Tanguy Rouxel
{"title":"Thermal and mechanical properties of Mg–Al–Si–O–N glasses with up to 6.2 at.% nitrogen","authors":"Theany To,&nbsp;Chouaib Mhamdia,&nbsp;Sharafat Ali,&nbsp;Patrick Houizot,&nbsp;Karolina Milewska,&nbsp;Franck Tessier,&nbsp;Alain Moreac,&nbsp;Tanguy Rouxel","doi":"10.1111/jace.20487","DOIUrl":"https://doi.org/10.1111/jace.20487","url":null,"abstract":"<p>This study investigates the structural, thermal, and mechanical properties of Mg–Al–Si–O–N glasses. Six compositions with increasing nitrogen content from 1.7 to 6.2 at.% were synthesized by melting mixtures of high-purity oxide and nitride precursors, followed by quenching and annealing. Structural analysis via X-ray diffraction and Raman spectroscopy confirms the amorphous nature of the glasses and highlights distinct spectral features based on the Mg/Al ratios, providing insight into the changes of the Si-O and Al-O bond concentration with the nitrogen content. The effects of nitrogen incorporation on density, molar volume, atomic packing density, glass transition temperature, and thermal expansion were systematically examined, revealing strong correlations. Measurements of elastic moduli, hardness, and fracture toughness underscore the role of nitrogen and the Mg/Al ratio in enhancing the mechanical properties. The findings demonstrate that by increasing the nitrogen content, the glass becomes stiffer and denser, and the mechanical properties are improved.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.20487","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Composition and structural evolution of basalt melt during homogenization 均一化过程中玄武岩熔体组成及结构演化
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI: 10.1111/jace.20502
Yu Wang, Hao-Yu Dou, Huai-Zhu Li, Jin Bai, Zong-Qing Bai, Wen Li
{"title":"Composition and structural evolution of basalt melt during homogenization","authors":"Yu Wang,&nbsp;Hao-Yu Dou,&nbsp;Huai-Zhu Li,&nbsp;Jin Bai,&nbsp;Zong-Qing Bai,&nbsp;Wen Li","doi":"10.1111/jace.20502","DOIUrl":"https://doi.org/10.1111/jace.20502","url":null,"abstract":"<p>During fabrication of basalt fiber, one critical procedure is the homogenization of melt, which typically lasts over 10 h at ∼1500°C. However, the changes in composition and structure of basalt melt during the homogenization process remain poorly understood. In this study, basalt melts were held at 1550°C for various durations and then rapidly quenched to form basalt glasses, enabling analyses of their compositional and structural evolution. Compositions of glasses were analyzed using chemical titration, energy dispersive X-ray, and inductively coupled plasma optical emission spectrometry methods. The crystallization process was examined through differential scanning calorimetry analysis, while structural evolution was investigated via Raman and X-ray photoelectron spectroscopy O1s spectroscopy. The results showed that the primary composition change during homogenization was the valence transition from Fe<sup>3+</sup> to Fe<sup>2+</sup>. The O<sup>2-</sup> produced with the valence transition gradually converted the Q<sup>3</sup> units into the Q<sup>2</sup> units. The homogenization process reached the stability of composition and structure after 8 h. A high proportion of Q<sup>2</sup> units will align along the fiber axis, enhancing the melt spinnability and reinforcing the basalt fiber.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chessboard-like nanostructure evolution in Li0.48Nd0.5TiO2.99 perovskites and its effects on electrochemical properties Li0.48Nd0.5TiO2.99钙钛矿的棋盘状纳米结构演化及其对电化学性能的影响
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI: 10.1111/jace.20488
Avnish Singh Pal, Akshat Godha, Ankur Sharma, Sujit Yuvraj Pimple, Ankit Singh, Pavithra Billare, Surendra Kumar Makineni, Kevin M. Knowles, Joysurya Basu
{"title":"Chessboard-like nanostructure evolution in Li0.48Nd0.5TiO2.99 perovskites and its effects on electrochemical properties","authors":"Avnish Singh Pal,&nbsp;Akshat Godha,&nbsp;Ankur Sharma,&nbsp;Sujit Yuvraj Pimple,&nbsp;Ankit Singh,&nbsp;Pavithra Billare,&nbsp;Surendra Kumar Makineni,&nbsp;Kevin M. Knowles,&nbsp;Joysurya Basu","doi":"10.1111/jace.20488","DOIUrl":"https://doi.org/10.1111/jace.20488","url":null,"abstract":"<p>Lithium neodymium titanate <i>AB</i>O<sub>3</sub> perovskites have been synthesized by a solid-state synthesis route. All the samples sintered at 1250°C for 24 h followed by slow cooling at ∼ 10°C h<sup>−1</sup> undergo an ordering−induced polymorphic transformation where the amount of ordering increases as the <i>A</i> site cation vacancy content increases. Li<sub>0.48</sub>Nd<sub>0.5</sub>TiO<sub>2.99</sub> sintered at 1250°C for 24 h and then quenched to room temperature forms a <i>Pnma</i> orthorhombic phase. This phase is also observed after 100 charging and discharging cycles of the Li<sub>0.48</sub>Nd<sub>0.5</sub>TiO<sub>2.99</sub> sample sintered at 1250°C and then slow-cooled.</p><p>A chessboard-like nanostructure with a ∼7 nm × 7 nm domain size is observed in the sintered and slow-cooled Li<sub>0.48</sub>Nd<sub>0.5</sub>TiO<sub>2.99</sub>, forming along {001} or {010} interfaces of the pseudo-tetragonal crystal structure. In the slow-cooled sample, independent channels of Li-ions, Nd-ions, and mixed ions are observed in the [100] projection of this chessboard-like structure. The atom probe tomographic reconstruction of this phase clearly indicates phase separation, with a periodic variation of the Li, Nd, and Ti ions. Significantly, the electrochemical properties of this Li<sub>0.48</sub>Nd<sub>0.5</sub>TiO<sub>2.99</sub> material are superior to those of sintered and quenched Li<sub>0.48</sub>Nd<sub>0.5</sub>TiO<sub>2.99</sub> and those of sintered and slow-cooled Li<sub>0.36</sub>Nd<sub>0.5</sub>TiO<sub>2.93</sub>, neither of which exhibit a chessboard-like nanostructure.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Erosion and erosion-fatigue/creep behavior of N720A/alumina ceramic matrix composites in combustion environment 燃烧环境下N720A/氧化铝陶瓷基复合材料的侵蚀和侵蚀疲劳蠕变行为
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI: 10.1111/jace.20489
Farhan Mirza, Ragav P. Panakarajupally, Christopher Ferguson, Gregory N. Morscher, Frank Abdi, Sung Choi
{"title":"Erosion and erosion-fatigue/creep behavior of N720A/alumina ceramic matrix composites in combustion environment","authors":"Farhan Mirza,&nbsp;Ragav P. Panakarajupally,&nbsp;Christopher Ferguson,&nbsp;Gregory N. Morscher,&nbsp;Frank Abdi,&nbsp;Sung Choi","doi":"10.1111/jace.20489","DOIUrl":"https://doi.org/10.1111/jace.20489","url":null,"abstract":"<p>Solid particle erosion behavior of an oxide/oxide ceramic matrix composite (CMC) was evaluated under high-temperature, high-velocity conditions with novel incorporation of simultaneous fatigue and creep loading during erosion impact. Experiments were conducted at 800°C and 1200°C with two different velocities, 200 m/s and 350 m/s, respectively. Mass loss, erosion rate, and microscopy of erosion crater per impact were determined to evaluate the extent of damage incurred. Post-erosion room temperature tension tests were performed to determine retained strength of CMCs. The results show that cumulative mass loss and erosion rate increase with increase in temperature and velocity. Post-erosion tension tests reveal decrease in strength with increasing crater area. Fatigue performance decreased with respect to increased severity of erosive conditions. However, the decrease in fatigue performance was attributed for the most part to the increase in net-section stress acting on crater region and not on additional elevated temperature fatigue-induced degradation mechanism. By integrating fatigue and creep tests into erosion experiments, this study provides a framework for understanding combined effects of mechanical loading and erosion on oxide/oxide CMCs.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Erbium aluminum perovskite ceramics with superior plasma etching resistance 具有优异抗等离子体腐蚀性能的铒铝钙钛矿陶瓷
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI: 10.1111/jace.20501
Christian Stern, Doris Sebold, Yoo Jung Sohn, Martin Bram, Olivier Guillon
{"title":"Erbium aluminum perovskite ceramics with superior plasma etching resistance","authors":"Christian Stern,&nbsp;Doris Sebold,&nbsp;Yoo Jung Sohn,&nbsp;Martin Bram,&nbsp;Olivier Guillon","doi":"10.1111/jace.20501","DOIUrl":"https://doi.org/10.1111/jace.20501","url":null,"abstract":"<p>In semiconductor industry, the ongoing miniaturization of the integrated functions on silicon wafers requires the application of harsher plasma compositions during dry etching. At the same time the requirements for cleanliness and wafer-to-wafer reproducibility increase. As a consequence, the erosion of inner wall materials releasing impurity particles into the plasma etching chamber poses a major challenge in semiconductor manufacturing. To mitigate maintenance costs and avoid wafer contamination, conventional materials such as quartz glass (SiO<sub>2</sub>) and alumina (Al<sub>2</sub>O<sub>3</sub>) are gradually exchanged for materials with superior etch resistance. Recently, yttrium aluminum garnet (YAG, Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>) and alternative materials with garnet structure have emerged as promising candidates for this application. In the present study, erbium aluminum perovskite (ErAlO<sub>3</sub>) was identified as a novel candidate for inner wall materials surpassing the etch resistance of erbium aluminum garnet (ErAG, Er<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>) and YAG, which were tested as reference materials in the same etch run. Reactive spark plasma sintering (RSPS) was employed for the synthesis of all specimen, which were then exposed to fluorine-based etching plasma. The erosion was characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and laser scanning microcopy.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.20501","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-furnace-temperature flash sintering of tetragonal 1.5-mol% YSZ: Role of particle necking on grain growth 四方1.5 mol% YSZ的低温闪烧:颗粒颈缩对晶粒生长的影响
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI: 10.1111/jace.20490
Fei Shen Ong, Kenta Kawamura, Kohei Hosoi, Hiroshi Masuda, Bin Feng, Koji Matsui, Yuichi Ikuhara, Hidehiro Yoshida
{"title":"Low-furnace-temperature flash sintering of tetragonal 1.5-mol% YSZ: Role of particle necking on grain growth","authors":"Fei Shen Ong,&nbsp;Kenta Kawamura,&nbsp;Kohei Hosoi,&nbsp;Hiroshi Masuda,&nbsp;Bin Feng,&nbsp;Koji Matsui,&nbsp;Yuichi Ikuhara,&nbsp;Hidehiro Yoshida","doi":"10.1111/jace.20490","DOIUrl":"https://doi.org/10.1111/jace.20490","url":null,"abstract":"<p>This study presents a strategy to achieve over 99% relative density in monophasic tetragonal 1.5-mol% yttria-stabilized zirconia (1.5YSZ) polycrystalline ceramics via current-ramp flash (CRF) sintering at furnace temperatures as low as 600°C. While 1.5YSZ exhibits high toughness, it is prone to cracking due to spontaneous tetragonal-to-monoclinic (T → M) phase transformation when grain sizes exceed a critical threshold. The proposed strategy combines preheating with multi-step CRF sintering, where preheating promotes particle neck growth, a key mechanism enabling flash sintering at lower furnace temperatures. Without preheating, flash sintering at furnace temperatures below 1100°C resulted in accelerated grain growth and spontaneous T → M transformation, driven by current localization at poorly developed particle necks. In contrast, incorporating preheating under identical flash sintering conditions reduced grain size by nearly half with minimal change in sample temperature. This strategy lowers furnace temperatures by over 50% compared to conventional sintering methods and significantly accelerates densification. Moreover, it integrates efficiently into existing ceramic manufacturing workflows, which often include calcination to produce moderately dense bodies.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.20490","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
LuGdAG:Ce ceramic compositions as promising candidates for high CRI white light emitting diodes LuGdAG:Ce陶瓷成分作为高显色白光发光二极管的有前途的候选者
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-19 DOI: 10.1111/jace.20497
A. A. Kravtsov, V. A. Lapin, O. M. Chapura, E. V. Medyanik, L. V. Tarala, K. V. Kungurtsev, V. E. Suprunchuk, D. S. Vakalov, F. F. Malyavin, E. A. Brazhko, D. P. Bedrakov, V. A. Tarala
{"title":"LuGdAG:Ce ceramic compositions as promising candidates for high CRI white light emitting diodes","authors":"A. A. Kravtsov,&nbsp;V. A. Lapin,&nbsp;O. M. Chapura,&nbsp;E. V. Medyanik,&nbsp;L. V. Tarala,&nbsp;K. V. Kungurtsev,&nbsp;V. E. Suprunchuk,&nbsp;D. S. Vakalov,&nbsp;F. F. Malyavin,&nbsp;E. A. Brazhko,&nbsp;D. P. Bedrakov,&nbsp;V. A. Tarala","doi":"10.1111/jace.20497","DOIUrl":"https://doi.org/10.1111/jace.20497","url":null,"abstract":"<p>In this study, powders of LuGdAG:Ce oxide compositions with gadolinium content ranging from 0 to 100 at.% were synthesized using the chemical precipitation method. The influence of the nominal composition on the kinetics of phase transformations, as well as the particle size distribution and morphology of the powders, was investigated. Ceramic samples of LuGdAG:Ce were produced from these ceramic powders. A comparison with reference materials revealed differences in the properties of LuGdAG:Ce ceramics obtained from chemically precipitated powders versus those synthesized through solid-phase reactive sintering. The examination of the optical and luminescent properties of the ceramic samples indicated that as the proportion of gadolinium increases, the light transmittance of the ceramics also increases at a vacuum sintering temperature of 1740°C. In addition, as the gadolinium content increased, there was a shift in the luminescence spectrum toward the red region, a decrease in correlated color temperature, a reduction in luminescence efficiency, and an increase in the color rendering index. When comparing the luminescent characteristics of LuGdAG:Ce and YAG:Ce ceramics with the same cerium content, it was found that YAG:Ce exhibits higher efficiency and brightness but a lower color rendering index. The highest color rendering index (Ra ≈ 77) was recorded for Ce<sub>0.01</sub>Lu<sub>1.19</sub>Gd<sub>1.8</sub>Al<sub>5</sub>O<sub>12</sub> ceramics, which is a notable achievement for single-phase ceramics with a garnet structure. These results confirm that LuGdAG:Ce ceramics hold promise for use in warm white light sources with a high color rendering index, including high-power laser-excited sources.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanisms of rare-earth monosilicate reaction with calcium–magnesium aluminosilicate 稀土单硅酸盐与硅酸钙镁反应机理研究
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-18 DOI: 10.1111/jace.20423
Cameron K. Miller, Elizabeth J. Opila
{"title":"Mechanisms of rare-earth monosilicate reaction with calcium–magnesium aluminosilicate","authors":"Cameron K. Miller,&nbsp;Elizabeth J. Opila","doi":"10.1111/jace.20423","DOIUrl":"https://doi.org/10.1111/jace.20423","url":null,"abstract":"<p>Reactions of calcium–magnesium aluminosilicate (CMAS) with single-cation rare-earth monosilicates (REMS) at 1300°C for times up to 24 h were investigated to determine reaction mechanisms. Eight single-cation REMSs were investigated: La<sub>2</sub>SiO<sub>5</sub>, Nd<sub>2</sub>SiO<sub>5</sub>, Gd<sub>2</sub>SiO<sub>5</sub>, Dy<sub>2</sub>SiO<sub>5</sub>, Y<sub>2</sub>SiO<sub>5</sub>, Er<sub>2</sub>SiO<sub>5</sub>, Yb<sub>2</sub>SiO<sub>5</sub>, and Lu<sub>2</sub>SiO<sub>5</sub>. REMS with the smallest and largest cations, from either end of the lanthanide series, produced denser layers of apatite and underwent less recession, whereas the middle of the rare-earths experienced much more recession and produced thick, low density apatite product layers. These reaction morphologies are attributed to competition between rates of REMS dissolution and apatite precipitation, which govern the outcome of REMS + CMAS reactions. The relative differences between these rates produce the range of REMS degradation observed when investigated as a function of rare-earth cation. Three key reaction mechanisms are identified: dissolution-limited, precipitation-limited, and RE-apatite mediated, which themselves depend on the underlying stabilities of a particular RE cation's RE<sub>9.33</sub>◻<sub>0.67</sub>(SiO<sub>4</sub>)<sub>6</sub>O<sub>2</sub> and Ca<sub>2</sub>RE<sub>8</sub>(SiO<sub>4</sub>)<sub>6</sub>O<sub>2</sub> apatite phases.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jace.20423","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel ternary nitride whisker: MgSiN2 whisker and its growth mechanism 一种新型三元氮化物晶须:MgSiN2晶须及其生长机理
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-17 DOI: 10.1111/jace.20480
Yixin Luo, Jun Ding, Chao Yu, Zhenglong Liu, Chengji Deng
{"title":"A novel ternary nitride whisker: MgSiN2 whisker and its growth mechanism","authors":"Yixin Luo,&nbsp;Jun Ding,&nbsp;Chao Yu,&nbsp;Zhenglong Liu,&nbsp;Chengji Deng","doi":"10.1111/jace.20480","DOIUrl":"https://doi.org/10.1111/jace.20480","url":null,"abstract":"<p>The MgSiN<sub>2</sub> whisker, as a novel ternary nitride, exhibits considerable potential as an advanced high-temperature toughening material. In this study, the supported catalysis method was employed to synthesize the MgSiN<sub>2</sub> whisker for the first time, as well as for the impacts of catalyst precursor and heat treatment temperature on the phase, morphology, and growth mechanism of the MgSiN<sub>2</sub> whisker were investigated. The results showed that the precursor of Fe, Co, and Ni catalyst precursors all had catalytic effects on the growth of the MgSiN<sub>2</sub> whisker. The Co catalyst precursor exhibited superior catalytic efficacy, significantly enhancing the yield and length-to-diameter ratio of the MgSiN<sub>2</sub> whisker. Furthermore, as the heat treatment temperature increases, the growth mechanism of the MgSiN<sub>2</sub> whisker transitions from vapor–solid (VS) to vapor–liquid–solid (VLS), and ultimately to a dislocation-mediated growth mechanism. The successful synthesis of the MgSiN<sub>2</sub> whisker, measuring approximately 0.6 µm in diameter and 20–30 µm in length, was achieved at 1400°C. Simultaneously, the Co catalyst precursor had been observed to effectively enhance the adsorption of gaseous Mg and N<sub>2</sub> on the Si<sub>3</sub>N<sub>4</sub>(1 1 0) surface, facilitating the growth of the MgSiN<sub>2</sub> whisker.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Renewable composite fiber for spatial radiation detection 用于空间辐射探测的可再生复合纤维
IF 3.5 3区 材料科学
Journal of the American Ceramic Society Pub Date : 2025-03-17 DOI: 10.1111/jace.20486
Yankun Qi, Hongwei Li, Feng Zhang, Dianhao Hou, Dazhao Wang, Xueliang Li, Junpeng Guo, Shichao Lv, Shifeng Zhou
{"title":"Renewable composite fiber for spatial radiation detection","authors":"Yankun Qi,&nbsp;Hongwei Li,&nbsp;Feng Zhang,&nbsp;Dianhao Hou,&nbsp;Dazhao Wang,&nbsp;Xueliang Li,&nbsp;Junpeng Guo,&nbsp;Shichao Lv,&nbsp;Shifeng Zhou","doi":"10.1111/jace.20486","DOIUrl":"https://doi.org/10.1111/jace.20486","url":null,"abstract":"<p>Radiation detection is a common theme in various significant fields including radiotherapy, nuclear industry, aerospace, and environmental monitoring. Radiophotoluminescence (RPL) materials are widely used for radiation detection, but almost all of these candidates are in bulk form, and the fabrication of radiation detectors for spatial radiation detection remains a significant challenge. In this paper, we propose a novel chloride composite fiber with RPL response for precise measurement of spatial distribution of radiation levels. The composite fiber presents the core-clad configuration and thus can effectively prevent from the deliquescence issue. It has a tunable diameter (100∼1000 µm) and high length-diameter ratio (&gt; 2000). It exhibits remarkable radiation detection capability of the composite fiber, with an X-ray detection limit as low as 4 µGy. Furthermore, the prepared composite fiber can be regenerated and reused by simple ultra-violet irradiation. We further construct a radiation detection device using composite fiber and demonstrate its practical application for one-pot spatial identification of radiation pollution level at different depths of soil. The results of our work provide a new and effective idea in the field of spatial radiation detection.</p>","PeriodicalId":200,"journal":{"name":"Journal of the American Ceramic Society","volume":"108 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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