Ceramics International最新文献_第10页

Effect of mechanical polishing on friction and corrosion resistance of mild steel micro-arc oxidation coating 机械抛光对低碳钢微弧氧化涂层摩擦和耐蚀性的影响

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.345

Tengfei Liu , Ping Liu , Guangming Xu , Sheng Su , Qinbin You , Ziyi Wang , Hailin Lu

{"title":"Effect of mechanical polishing on friction and corrosion resistance of mild steel micro-arc oxidation coating","authors":"Tengfei Liu , Ping Liu , Guangming Xu , Sheng Su , Qinbin You , Ziyi Wang , Hailin Lu","doi":"10.1016/j.ceramint.2025.03.345","DOIUrl":"10.1016/j.ceramint.2025.03.345","url":null,"abstract":"<div><div>The study investigates the effect of mechanical polishing (MP) post-treatment on the friction and corrosion resistance of micro-arc oxidation (MAO) coatings applied to mild steel. A composite coating was prepared on mild steel by combining MAO and MP processes. The formation mechanism of α-Al2O3 and FeAl2O4 in the coating was investigated using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Experimental results show that MP post-treatment significantly reduces the surface roughness of the MAO coating to 2.6 μm and exposes additional high-hardness α-Al2O3 phase by removing volcanic protrusions on the surface. As a result, the Vickers hardness of the coating increases to 1169.1 H V, which is 8.9 % higher than that of the unpolished MAO coating. The friction test shows that the volume wear rate of the MAO + MP coating is 3.62 × 10−5 mm3/(N·m) when tested with the GCr15 friction pair under a 5N load. However, the corrosion resistance decreases due to the thinning of the coating and microstructural changes induced by MP. This study confirms that the synergistic effect of MAO and MP significantly improves the wear resistance of mild steel. However, the trade-off with corrosion protection must be considered, providing a theoretical basis for surface modification under high-load friction conditions.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26629-26644"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Single-phase (TiZr2HfNbTa)C5 high-entropy carbide designed by cluster-plus-glue-atom model 采用簇-胶-原子模型设计单相（TiZr2HfNbTa）C5高熵碳化物

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.336

Yunping Wang , Cunlei Zou , Shimin Liu , Chuang Dong

{"title":"Single-phase (TiZr2HfNbTa)C5 high-entropy carbide designed by cluster-plus-glue-atom model","authors":"Yunping Wang , Cunlei Zou , Shimin Liu , Chuang Dong","doi":"10.1016/j.ceramint.2025.03.336","DOIUrl":"10.1016/j.ceramint.2025.03.336","url":null,"abstract":"<div><div>High-entropy carbides are drawing increasing attention due to their extreme thermal stability at high temperatures. However, their composition design remains largely empirical. In the present work, a novel composition design tool, the cluster-plus-glue-atom model is used to develop MC-type rocksalt structure high-entropy carbide. According to this model, the composition unit in such a carbide is composed of a nearest-neighbor coordination cluster, centered by C and shelled by six M’s, plus a few next-neighbor “glue” C’s, or expressed in cluster formula as [C-M6]Cx (x represents the number of glue atoms), where M6 = TiZr2HfNbTa. We here report the synthesis of (TiZr2HfNbTa)C5 high-entropy carbide via sintering mixed Ti, Zr, Hf, Nb, Ta, and C powders at 1600–2150 °C for 10–30 min at a uniaxial pressure of 30 MPa under vacuum of 5 Pa. In particular, the sintering at 2150 °C for 20 min forms a single-phase state, reaching a Vickers hardness HV of 26.5 GPa and a fracture toughness KIC of 3.5 MPa m1/2, significantly higher than 22 GPa and 3.0 MPa m1/2 of the reported rocksalt-type equi-mole carbide (Ti0.2Zr0.2Hf0.2Nb0.2Ta0.2)C.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26538-26546"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phase equilibria in the Gd2O3-Ta2O5 system: New high-temperature experiments and thermodynamic modeling Gd2O3-Ta2O5体系的相平衡：新的高温实验和热力学模型

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.357

Sihan Wang, Dan Zhao, Zhipeng Pi, Fan Zhang

{"title":"Phase equilibria in the Gd2O3-Ta2O5 system: New high-temperature experiments and thermodynamic modeling","authors":"Sihan Wang, Dan Zhao, Zhipeng Pi, Fan Zhang","doi":"10.1016/j.ceramint.2025.03.357","DOIUrl":"10.1016/j.ceramint.2025.03.357","url":null,"abstract":"<div><div>A CO2 laser heating apparatus combined with a high-speed pyrometer was employed to conduct new high-temperature experiments on the phase transformation of the Gd2O3-Ta2O5 system. The solidification features of the as-cast samples were examined by means of an X-ray diffractometer and scanning electron microscopy. Four eutectic reactions were found in this study, namely Liquid→F-Gd3TaO7 +B-Gd2O3, Liquid→F-Gd3TaO7+T-GdTaO4, Liquid→T-GdTaO4+O-GdTa3O9 and Liquid→O-GdTa3O9+α-Ta2O5. Their eutectic compositions and temperatures were updated based on our experimental results. The congruent reaction temperatures of Liquid→T-GdTaO4 and Liquid→O-GdTa3O9 were determined to be at 2055 °C and 2010 °C, respectively. Moreover, phase stability of h-GdTa7O19, which can form between 1400 °C and 1500 °C, was discussed. Finally, the CALPHAD method was applied to conduct a thermodynamic optimization of the Gd2O3-Ta2O5 system. The liquid phase was characterized by the ionic two-sublattice model, while the thermodynamic models of intermediate compounds were formulated based on their crystal structures. The comparisons between the calculated results and the accessible experimental data show that our thermodynamic modeling is sound. The findings of this research can promote the development of gadolinium tantalate materials and offer understandings regarding phase equilibrium and the development of the thermodynamic database for relevant multicomponent systems.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26764-26773"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Lowering the sintering temperature of BaZr0.4Ce0.4Y0.1Yb0.1O3-δ electrolyte by spark plasma sintering for protonic ceramic fuel cells 放电等离子烧结降低质子陶瓷燃料电池BaZr0.4Ce0.4Y0.1Yb0.1O3-δ电解质的烧结温度

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.312

Yanru Yang , Zongying Han , Hao Yu , Xuesong Shen , Peng Qiu

{"title":"Lowering the sintering temperature of BaZr0.4Ce0.4Y0.1Yb0.1O3-δ electrolyte by spark plasma sintering for protonic ceramic fuel cells","authors":"Yanru Yang , Zongying Han , Hao Yu , Xuesong Shen , Peng Qiu","doi":"10.1016/j.ceramint.2025.03.312","DOIUrl":"10.1016/j.ceramint.2025.03.312","url":null,"abstract":"<div><div>Protonic ceramic fuel cells (PCFCs) necessitate dense electrolytes to minimize grain boundary resistance and effectively isolate the atmospheres of the electrodes, typically requiring high densification temperatures exceeding 1500 °C. Such conditions can result in anode sintering and the volatilization of Ba. To address these challenges, a promising alternative, spark plasma sintering (SPS) technology characterized by high thermal efficiency and uniform heating, was proposed. This study marks the inaugural application of SPS in the fabrication of anode-supported PCFCs. Single cells prepared using the SPS process demonstrated peak power densities of 0.802 and 0.526 W cm−2 at 650 and 600 °C, respectively. These results represent a substantial improvement in electrochemical performance compared to cells produced via traditional high-temperature co-sintering methods. The enhancement is attributed to the increased specific surface area and porosity of the anode. Furthermore, PCFCs fabricated with the SPS process exhibit exceptional stability. In conclusion, a novel method was provided for preparing PCFC single cells that not only effectively reduces sintering costs and time but also significantly enhances the electrochemical performance of the cells.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 26309-26315"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144522653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Zirconium diboride-based slurries with readily controlled viscosity for preparing ceramic matrix composites 用于制备陶瓷基复合材料的易于控制粘度的二硼化锆基浆料

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.210

Yaroslav M. Shershov , Roman A. Orbant , Denis A. Bannykh , Aleksei V. Utkin , Dmitry A. Svintsitskiy , Natalya I. Baklanova

{"title":"Zirconium diboride-based slurries with readily controlled viscosity for preparing ceramic matrix composites","authors":"Yaroslav M. Shershov , Roman A. Orbant , Denis A. Bannykh , Aleksei V. Utkin , Dmitry A. Svintsitskiy , Natalya I. Baklanova","doi":"10.1016/j.ceramint.2025.03.210","DOIUrl":"10.1016/j.ceramint.2025.03.210","url":null,"abstract":"<div><div>A comprehensive study of the rheological properties of slurries containing ZrB2 ceramic powder of different dispersity, as well as phenol–formaldehyde resin as a binder and acetone as a solvent, was undertaken. Dependences of viscosity and shear stress on shear rate of both solutions of phenol–formaldehyde resin in acetone and slurries containing ceramic fillers were investigated. The limits of the content of dispersed ZrB2 particles in the slurries were established, and the range of dynamic viscosities of the slurries depending on their composition was determined. A model was proposed to describe and predict the viscosity values of multicomponent slurries containing a ceramic filler, an organic resin, and a solvent was proposed. The ZrB2-SiC composites reinforced with continuous carbon fiber were formed using the resulting slurries of different viscosities. The penetration ability of the slurries into the carbon fiber, as well as the composite's overall microstructure, have been demonstrated to be significantly influenced by slurry viscosity.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 25281-25289"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Isothermal temperature oxidation behavior and mechanism of REB2C2 ceramics (RE = Y, Gd, Dy, Ho, Er) at 800–1000 °C in air REB2C2陶瓷（RE = Y, Gd, Dy, Ho, Er）在800-1000℃空气中的等温氧化行为及机理

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.135

Shouyin Xu , Li Tian , Yueming Li , Fuyuan Zheng , Yunhui Li , Qingming Xu , Jianwei Zhu , Guorui Zhao

{"title":"Isothermal temperature oxidation behavior and mechanism of REB2C2 ceramics (RE = Y, Gd, Dy, Ho, Er) at 800–1000 °C in air","authors":"Shouyin Xu , Li Tian , Yueming Li , Fuyuan Zheng , Yunhui Li , Qingming Xu , Jianwei Zhu , Guorui Zhao","doi":"10.1016/j.ceramint.2025.03.135","DOIUrl":"10.1016/j.ceramint.2025.03.135","url":null,"abstract":"<div><div>In this study, the isothermal oxidation behavior of several high-purity REB2C2 (RE = Y, Gd, Dy, Ho, Er) ceramics in air at 800–1000 °C for 20 h was investigated for the first time. The results indicated that the oxidation of most REB2C2 (RE = Y, Dy, Ho, Er) follows a parabolic law and demonstrates good oxidation resistance. The superior oxidation resistance of these REB2C2 (RE = Y, Dy, Ho, Er) ceramics can be attributed to the formation of a continuous, dense oxide layer composed of REBO3 (RE = Y, Dy, Ho, Er) and amorphous B2O3 on the substrate surface during the oxidation process. This dense oxide layer effectively reduces oxygen transport and decreases the oxidation rate through a diffusion-controlled mechanism, thereby isolating the substrate from oxygen exposure and protecting the underlying material. However, as the oxidation temperature increased, the oxide layer was primarily composed of REBO3 particles, and there were more pores resulting from the volatilization of amorphous B2O3. At an oxidation temperature of 1000 °C, the particle size of REBO3 increased, which facilitated the reduction of pores and helped maintain the density of the oxide layer. Notably, ErBO3 exhibited a significant increase in particle size, leading to the densest oxide layer and demonstrating the best oxidation resistance. In contrast, GdB2C2 showed a linear increase in mass gain and exhibited relatively poor oxidation resistance.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24520-24533"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

New porous lithium metasilicate glass-ceramics prepared by cold sintering process associated with post-annealing technique 采用冷烧结结合后退火技术制备新型多孔偏硅酸锂微晶玻璃

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.137

Xigeng Lyu , Xiaoyu Zhang , Yeongjun Seo , Tohru Sekino , Yaming Zhang , Fu Wang

{"title":"New porous lithium metasilicate glass-ceramics prepared by cold sintering process associated with post-annealing technique","authors":"Xigeng Lyu , Xiaoyu Zhang , Yeongjun Seo , Tohru Sekino , Yaming Zhang , Fu Wang","doi":"10.1016/j.ceramint.2025.03.137","DOIUrl":"10.1016/j.ceramint.2025.03.137","url":null,"abstract":"<div><div>With the usage of gel-derived powders and NaOH solutions, porous lithium metasilicate (Li2SiO3, written as LM) glass-ceramics were prepared by cold sintering process (CSP) associated with post-annealing technique. With concentrations of NaOH solutions rising from 5 M to 20 M, an increasing degree of silicate structure depolymerization and more Si–OH groups were found for cold sintered pellets, and subsequently upward trends in number and size of spherical pores appeared for resultant porous glass-ceramics. Its total porosity and average size of formed spherical pore varied from 27.7 ± 2.2 % to 55.8 ± 1.8 % and 2.40 ± 1.17 μm to 14.99 ± 11.27 μm. In the meanwhile, precipitated crystals in pore walls exhibited rising volume fractions and gradually evolved from lithium disilicate (Li2Si2O5, written as LD) phase to LM phase with concentrations of NaOH solutions increasing. Young's modulus and hardness of pore walls for resultant porous glass-ceramics rose from 14.8 ± 3.1 GPa and 0.9 ± 0.2 GPa to 78.8 ± 3.8 GPa and 7.3 ± 0.7 GPa, along with its flexural strengths increasing from 17.3 ± 1.3 MPa to 56.1 ± 1.2 MPa. The proper mechanical properties made resultant porous LM glass-ceramics to be a promising candidate in preparing hybrid dental composites: polymer-infiltrated-ceramic-network (PICN) materials.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24544-24551"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Microstructural evolution and performance factors of Si-O-N ceramics with dielectric and mechanical properties 具有介电性能和力学性能的Si-O-N陶瓷的微观组织演变及性能因素

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.139

Jing Guan, Fang Ye, Laifei Cheng

{"title":"Microstructural evolution and performance factors of Si-O-N ceramics with dielectric and mechanical properties","authors":"Jing Guan, Fang Ye, Laifei Cheng","doi":"10.1016/j.ceramint.2025.03.139","DOIUrl":"10.1016/j.ceramint.2025.03.139","url":null,"abstract":"<div><div>The Si-O-N system ceramics, which include silicon nitride (Si3N4), silica, and silicon oxynitride (Si2N2O), not only enhance thermal stability and wave-transparent performance simultaneously but also exhibit excellent designability in terms of composition and microstructure. They hold significant potential to replace conventional wave-transparent materials, such as Si3N4. Herein, we investigated the preparation of Si-O-N system ceramics using gas pressure sintering method with silicon nitride and silicon dioxide as raw materials. The main focus is on the effects of sintering temperature and holding time on the microstructure, mechanical properties, and dielectric properties (both at room temperature and high temperature) of Si-O-N system ceramics. It was found that at a sintering temperature of 1700 °C, the Si-O-N ceramics predominantly exhibited the Si2N2O phase. However, with increasing sintering time, the Si2N2O transformed into Si3N4. The mechanical properties of the Si-O-N ceramics sintered at 1700 °C for 3 h showed that the density, porosity, flexural strength, and fracture toughness were 2.54 ± 0.01 g·cm−3, 4.32 %, 278 ± 17 MPa, and 7.45 MPa·m1/2, respectively. Their wave-transparent performance is exceptional, characterized by a dielectric constant with a real part of 5.27 and an imaginary part of 0.02 at 10 GHz, along with a remarkably low dielectric loss of 0.0038 at the same frequency.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24565-24573"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic lubrication behavior of TiN coatings integrated with CNTs for oil and water lubrication 结合碳纳米管的TiN涂层在油水润滑中的协同润滑行为

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.165

Lupeng Wu , Tianxiang Li , Xiangyu Zhao , Yuxuan Zhang , Ke Zhang , Le Gu , Yongtao Zhang , Ding Zheng

{"title":"Synergistic lubrication behavior of TiN coatings integrated with CNTs for oil and water lubrication","authors":"Lupeng Wu , Tianxiang Li , Xiangyu Zhao , Yuxuan Zhang , Ke Zhang , Le Gu , Yongtao Zhang , Ding Zheng","doi":"10.1016/j.ceramint.2025.03.165","DOIUrl":"10.1016/j.ceramint.2025.03.165","url":null,"abstract":"<div><div>The titanium nitride (TiN) coating was deposited on the M50NiL substrate by using a multiarc ion plating technique to enhance tribological performance under high contact stress. The microstructure and mechanical properties of the TiN coating were characterized and results demonstrated that the hardness and modulus of elasticity were enhanced to 33 GPa and 400 GPa, respectively. The tribological behavior of TiN coatings sliding against Si3N4 ceramic was investigated by using a ball-on-disc tribometer. Under dry friction, the wear resistance property was improved by 60.5 % after TiN deposition at high contact stress of 2.3 GPa. Meanwhile, carbon nanotubes (CNTs) nano-lubricants with good dispersion stability were prepared. Under aqueous lubrication, the coefficient of friction (COF) and wear scar diameter (WSD) decreased by 15.6 % and 8.7 %, respectively, after adding 0.2 wt% CNTs when TiN coatings slid against Si3N4 ceramic. Under oil lubrication, the COF and WSD decreased by 5.5 % and 12.6 %, respectively with the addition of CNTs. The findings contributed to the practical application of CNTs as additives in hybrid ceramic bearings lubrication.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24833-24845"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of TiO2 on B2O3-SiO2-Al2O3-Na2O-BaO glass lubricant: Viscosity, structure, melting behavior and wettability TiO2对B2O3-SiO2-Al2O3-Na2O-BaO玻璃润滑剂的影响：粘度、结构、熔融行为和润湿性

IF 5.1 2区材料科学

Ceramics International Pub Date : 2025-07-01 DOI: 10.1016/j.ceramint.2025.03.148

Lei Cui , Pei-yuan Ni , Bing Song , Wei Lv , Ying Li

{"title":"Effect of TiO2 on B2O3-SiO2-Al2O3-Na2O-BaO glass lubricant: Viscosity, structure, melting behavior and wettability","authors":"Lei Cui , Pei-yuan Ni , Bing Song , Wei Lv , Ying Li","doi":"10.1016/j.ceramint.2025.03.148","DOIUrl":"10.1016/j.ceramint.2025.03.148","url":null,"abstract":"<div><div>Glass lubricants with suitable viscosity, softening temperature and wettability are critical for the high efficiency production of titanium alloys in hot extrusion process. A novel glass lubricant, (26.29–0.263x)B2O3-(41.19–0.412x)SiO2-(6.13–0.061x)Al2O3-(11.39–0.114x)Na2O-(15–0.15x)BaO-xTiO2, was investigated in this paper. The effect of TiO2 content on its viscosity, structure, melting behavior and wettability was investigated from 900 °C to 1100 °C. The results showed that the viscosity value at 950 °C was decreased by 42.83 % from 48.8 Pa s to 27.9 Pa s, when TiO2 content was increased from 0 wt% to 12 wt%. The glass deformation, softening, hemispheric and flow temperatures were increased with an increased TiO2 content, and the sample T2 (3 wt% TiO2) showed a good wettability with the Ti-6Al-4V alloy matrix. X-ray photoelectron spectroscopy fitting and molecular dynamics simulations due to show that the increased amounts of Q2, Q3, Q4, [BO3], [AlO4], and [TiO4] in the melts with an increased TiO2 content lead to a weakened network homogeneity and symmetry, and consequently a reduced viscosity. Furthermore, lubricant T2 was recommended due to its softening temperature value of 759.1 °C, wetting angle value of 8.1° and viscosity value of 46.6 Pa s at 950 °C, and a small viscosity variation was observed from 950 °C to 1100 °C, which is a typical temperature change in TC4 hot extrusion.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 18","pages":"Pages 24651-24664"},"PeriodicalIF":5.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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