Journal of Non-Crystalline Solids: X最新文献_第5页

Hydrophobic hybrid silica sol-gel coating on aluminium: Stability evaluation during saturated vapour condensation 铝上疏水杂化硅溶胶-凝胶涂层:饱和蒸汽冷凝时的稳定性评价

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2022.100143

Maria Basso, Elena Colusso, Marco Tancon, Stefano Bortolin, Matteo Mirafiori, Massimo Guglielmi, Davide Del Col, Alessandro Martucci

{"title":"Hydrophobic hybrid silica sol-gel coating on aluminium: Stability evaluation during saturated vapour condensation","authors":"Maria Basso, Elena Colusso, Marco Tancon, Stefano Bortolin, Matteo Mirafiori, Massimo Guglielmi, Davide Del Col, Alessandro Martucci","doi":"10.1016/j.nocx.2022.100143","DOIUrl":"10.1016/j.nocx.2022.100143","url":null,"abstract":"<div>Hydrophobic coatings are widely employed in liquid-vapour phase change applications, offering advantageous control on condensation dynamics. However, they suffer from poor stability under harsh conditions and their durability is often neglected over thermal performance. Here, the global performance of a hybrid octyl-modified silica coating on aluminium was studied during saturated vapour condensation, in terms of thermal efficiency and durability. The coating successfully promoted dropwise condensation with heat transfer coefficients of ∼90 kW m−2 K−1, an average 9-fold increase with respect to filmwise condensation under similar heat flux conditions. Straightforward and reproducible tests were employed to separately evaluate the different factors influencing the coating's degradation, attempting to reproduce the conditions present in the apparatus used for the condensation experiments. The developed tests could successfully provide a rapid estimation of the coating's durability during a broad range of liquid-vapour phase change applications.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"17 ","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45846042","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: 2

Erratum to “Glass-forming ability, thermal stability, mechanical and electrochemical behavior of Al-Ce-TM (TM = Ti, Cr, Mn, Fe, Co, Ni and Cu) amorphous alloys” [Journal of Non Crystalline Solids:X 1C (2019) 100005] “Al-Ce TM（TM）的玻璃形成能力、热稳定性、机械和电化学行为”勘误表 = Ti、Cr、Mn、Fe、Co、Ni和Cu）非晶态合金”[非晶态固体杂志：X 1C（2019）100005]

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2022.100139

Jianqi Zhang , Pengzhong Shi , August Chang , Tian Zhao , Wenwen Li , Chenyuan Chang , Jiyu Jia , Qiang Wang , Furen You , Dianchen Feng , Xuemei Wang , Yinfeng Zhao , Tao Li , Yongchang Huang , Shengli An

引用次数: 0

Dynamic light scattering in low connectivity phosphate glass melts crosslinked by Na or Zn Na或Zn交联低连接性磷酸盐玻璃熔体的动态光散射

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2023.100157

G. Dirks, J. Pereira, D.L. Sidebottom

引用次数: 1

Sol-gel processing and characterization of binary P2O5-CaO and ternary P2O5-CaO-Li2O mesoporous phosphate bioactive glasses 二元P2O5-CaO和三元P2O5-CaO-Li2O介孔磷酸盐生物活性玻璃的溶胶-凝胶工艺及表征

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2023.100159

Chunde Li , Chen Wang , Aldo R. Boccaccini , Kai Zheng

{"title":"Sol-gel processing and characterization of binary P2O5-CaO and ternary P2O5-CaO-Li2O mesoporous phosphate bioactive glasses","authors":"Chunde Li , Chen Wang , Aldo R. Boccaccini , Kai Zheng","doi":"10.1016/j.nocx.2023.100159","DOIUrl":"10.1016/j.nocx.2023.100159","url":null,"abstract":"<div>Mesoporous phosphate bioactive glasses (MPBGs) are novel and attractive biomaterials for biomedical applications. Here we report the sol-gel processing of P2O5-CaO and P2O5-CaO-Li2O MPBGs using Pluronic P123 as the surfactant. Our results showed that P123 could act as a crystallization inhibitor, thus extending the composition range of MPBGs. The concentration of CaO from 40 to 55 mol% in P2O5-CaO MPBGs did not affect the phosphate chain structure and mesoporous morphology. However, the specific surface area and pore volume were slightly enhanced with the increased CaO concentration. In ternary P2O5-CaO-Li2O MPBGs, the increase in Li2O concentration (from 5 to 20 mol%) did not alter the phosphate chain structure and mesoporous morphology. However, 20 mol% Li2O incorporation induced crystallization. Binary and ternary MPBGs showed relatively low acellular bioactivity as indicated by the slow formation of hydroxyapatite in physiological fluids. Sol-gel processing is a feasible strategy for synthesizing P2O5-CaO and P2O5-CaO-Li2O MPBGs.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"17 ","pages":"Article 100159"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49207066","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: 3

Erratum to “Optical, structural and luminescence properties of oxyfluoride phosphate glasses and glass-ceramics doped with Yb3+” [Journal of Non Crystalline Solids:X 1C (2019) 100003] “掺Yb3+的氟磷酸盐玻璃和微晶玻璃的光学、结构和发光性能”勘误表[非结晶固体杂志：X 1C（2019）100003]

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2022.100138

R. Sen , N.N.G. Boetti , M. Hokka , L. Petit

引用次数: 0

Studies of magnetization dynamics in sol-gel derived nanocomposites containing transition metal ions and mesoporous templates 含过渡金属离子和介孔模板的溶胶-凝胶纳米复合材料的磁化动力学研究

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2023.100163

Anupam Maity , Subha Samanta , Dipankar Chakravorty

{"title":"Studies of magnetization dynamics in sol-gel derived nanocomposites containing transition metal ions and mesoporous templates","authors":"Anupam Maity , Subha Samanta , Dipankar Chakravorty","doi":"10.1016/j.nocx.2023.100163","DOIUrl":"10.1016/j.nocx.2023.100163","url":null,"abstract":"<div>Nickel and Cobalt ion containing silica based nanoglasses confined within mesoporous SBA-15 and mesoporous alumina templates were synthesized by sol-gel process. These nanocomposites were investigated to understand their microstructure, magnetization dynamics and magnetic memory effects near transition temperatures using state-of-the-art characterization techniques including XRD, TEM and SQUID. The temperature and frequency dependent dielectric properties and Nyquist plot were also investigated. The effect of transition ions and template on memory effect and relaxation dynamics of spin glass phase were explained with Scaling and Vogel-Fulcher laws. The mechanism accountable for the observed characteristics of these nanoconfined amorphous systems are explained systematically. The polarization mechanisms as a function of temperature and frequency were also investigated comprehensively. This study provides an advanced understanding of magnetization dynamics and dielectric property in nanoglass system which will be of fundamental and technological interest that will help to tune and fabricate advanced functional nano materials.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"17 ","pages":"Article 100163"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41518592","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

Electro-thermal poling in bioactive sodium‑calcium phosphate-silicate glass: Anodic near-surface network connectivity changes and second harmonic generation 生物活性磷酸钠钙硅酸盐玻璃的电热极化:阳极近表面网络连通性变化和二次谐波产生

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2023.100164

D. Palles , M. Dussauze , C.R. Mariappan , V. Rodriguez , B. Roling , E.I. Kamitsos

{"title":"Electro-thermal poling in bioactive sodium‑calcium phosphate-silicate glass: Anodic near-surface network connectivity changes and second harmonic generation","authors":"D. Palles , M. Dussauze , C.R. Mariappan , V. Rodriguez , B. Roling , E.I. Kamitsos","doi":"10.1016/j.nocx.2023.100164","DOIUrl":"10.1016/j.nocx.2023.100164","url":null,"abstract":"<div>We report Raman spectra in the sub-anodic region after electro-thermal poling of the 46S4 bioglass and show a correlation between structural changes and the induced second harmonic generation (SHG). The Raman peak at ca. 625 cm−1, due to the symmetric stretching-bending vibration of Si-O-Si bridges, was employed to quantify the poling-induced structural changes since its frequency νs(Si-O-Si) varies linearly with the silicate network connectivity, NC. Key results include the increase of network connectivity towards the anode after poling, with NC varying from 2.24 before poling to 2.37 at the anode after poling. SHG measurements showed the presence of an optically-inactive layer of 1.0 μm thick below the anode, followed by an optically-active layer where the SHG signal is maximized from about 1.5 to 4.0 μm. In this layer the NC takes intermediate values and reflects modest changes with respect to the pristine bioglass. The present findings suggest that the transport of electrons near the metal film anode is faster than the Na ion transport towards the cathode.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"17 ","pages":"Article 100164"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47284274","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

Effect of modifier cation size on the structure, properties and nickel speciation in BK7 type alkali borosilicate glasses 改性剂阳离子尺寸对BK7型碱硼硅酸盐玻璃结构、性能及镍形态的影响

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2023.100161

Brian Topper , Lucas Greiner , Randall E. Youngman , Darren Stohr , Efstratios I. Kamitsos , Doris Möncke

{"title":"Effect of modifier cation size on the structure, properties and nickel speciation in BK7 type alkali borosilicate glasses","authors":"Brian Topper , Lucas Greiner , Randall E. Youngman , Darren Stohr , Efstratios I. Kamitsos , Doris Möncke","doi":"10.1016/j.nocx.2023.100161","DOIUrl":"10.1016/j.nocx.2023.100161","url":null,"abstract":"<div>Alkali-borosilicate glasses 16M2O–10B2O3–74SiO2 were studied for M = Li to Cs. 11B NMR showed 57% four-fold coordinated boron for Li, but 88 to 97% for M = Na to Cs. The fraction of neutral borate triangles decreases from Na to Cs. Vibrational spectroscopy shows significant non-bridging oxygen on silicate species for Li, decreasing to a low level from Na to Cs. The glass transition temperature is highest for M = Cs and correlates with increasing network connectivity. Sub-liquidus phase separation and homonuclear bonding was observed for M = Li, while M = Na to Cs show good linking of silicate with borate tetrahedra. Raman spectroscopy reveals a maximum of danburite rings for M = K, the glass with the highest packing density. Glasses doped with Ni2O3 changed color from yellow (Li) to purple (Na), to blue in samples of higher optical basicity (K, Rb, Cs). Tetrahedral Ni2+ likely coexists with trivalent nickel, Ni3+, in blue glasses, while higher coordinated Ni2+ prevails in the yellow Li-sample.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"17 ","pages":"Article 100161"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42579744","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: 2

Photoluminescence emission in arsenic sulfide nanocomposite 硫化砷纳米复合材料的光致发光研究

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2023.100174

George Alkhalil , Julia A. Burunkova , Maria Stepanova , Andrey Veniaminov , Boglarka Donczo , Mate Szarka , Sandor Kokenyesi

引用次数: 0

Preparation of ternary spin-coated thin films by mixing binary As-S and As-Se glass solutions 混合二元As-S和As-Se玻璃溶液制备三元旋涂薄膜

Journal of Non-Crystalline Solids: X Pub Date : 2023-03-01 DOI: 10.1016/j.nocx.2022.100142

Jiri Jancalek , Stanislav Slang , Jiri Jemelka , Michal Kurka , Karel Palka , Miroslav Vlcek

引用次数: 1