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Comparisons of corrosion behaviour for X65 and low Cr steels in high pressure CO2-saturated brine

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Journal of Materials Science & Technology 2020年第6期41卷 21-32页

作者： Yong Hua Sikiru Mohammed Richard Barker anne neville Institute of Functional Surfaces School of Mechanical Engineering University of Leeds Leeds LS2 9JT United Kingdom

Appropriate materials for injection pipelines and tubing for carbon dioxide geologic storage is fundamental to ensure asset integrity and save *** paper evaluates the corrosion behaviour of X65,1Cr,3Cr and 5Cr,which have the potential to be injection pipeline/tubing *** influence of steel Cr content on the general and localised corrosion behaviour was investigated at time periods from 6 to 192 h at 60℃and 100 *** evolution,morphology and chemistry of corrosion products on the surface of each material were evaluated using a combination of scanning electron microscopy,energy dispersive X-ray spectroscopy and X-ray diffraction and related to their overall corrosion *** indicate that prior to the formation of protective films on the steel surfaces,the resistance of the materials to corrosion increase with increasing Cr content(Corrosion resistance:X651Cr>3Cr>5Cr).In terms of the corrosion products on X65,both inner amorphous and outer crystalline corrosion layers consist of *** the Cr-containing steels,the outer layer also comprises FeCO3,but the inner layer is enriched with Cr,and is predominantly amorphous Cr(OH)*** extent of localised corrosion(determined using surface profilometry)is noticeably less for X65 compared to the Cr-containing *** paper raises questions about the benefits that low Cr steels offer towards extending component design life compared to carbon steel under the test conditions considered here.

关键词： Carbon dioxide Corrosion X65 Low-Cr steels Iron carbonate Chromium hydroxide

Designing soft/hard double network hydrogel microsphere/UHMWPE composites to promote water lubrication performance

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Friction 2021年第3期9卷 551-568页

作者： Chaobao WANG Xiuqin BAI Conglin DONG Zhiwei GUO Chengqing YUAN anne neville School of Energy and Power Engineering Wuhan University of TechnologyWuhan 430063China Key Laboratory of Marine Power Engineering&Technology(Ministry of Transport) Wuhan University of TechnologyWuhan 430063China Institute of Functional Surfaces School of Mechanical EngineeringUniversity of LeedsLeeds LS29JTUnited Kingdom

Several soft tissues residing in the living body have excellent hydration lubrication properties and can provide effective protection during relative *** order to apply this advantage of soft matters in practical applications and try to avoid its disadvantage,such as swelling and weakening in water,a design strategy of a soft/hard double network(DN)hydrogel microsphere modified ultrahigh molecular weight polyethylene(UHMWPE)composite is proposed in this study.A series of microspheres of urea-formaldehyde(UF),polyacrylamide(PAAm)hydrogel,UF/PAAm double network,and their composites were *** mechanical properties,swelling,wettability,friction properties,and the lubrication mechanisms of the composites were *** results show that DN microspheres can have an excellent stability and provide hydration *** performance of 75 DN-1 composite was superior to *** finding will provide a novel strategy for the development of water-lubricated materials and have wide application in engineering fields.

关键词： double network microsphere composite friction properties hydration lubrication

An Investigation of Freezing of Supercooled Water on Anti-Freeze Protein Modified Surfaces

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Journal of Bionic Engineering 2013年第2期10卷 139-147页

作者： Thibaut V J Charpentier anne neville Paul Millner Rob Hewson Ardian Morina Institute of Engineering Thermofluids Surfaces and Interfaces (iETSI) Mechanical Engineering University of Leeds LS2 9JT Leeds UK

This work investigates how functionalization of aluminium surfaces with natural type III Anti-Freeze Protein （AFP） affects the mechanism of heterogeneous ice nucleation. First the bulk ice nucleation properties of distilled water and aqueous solution of AFP were evaluated by differential scanning calorimetry. Then the modified surface was characterized by Secondary Ions Mass Spectroscopy （SIMS）, Fourier Transform InfraRed （FTIR） spectroscopy and contact angle measurement. Freezing experiments were then conducted in which water droplets underwent a slow controlled cooling. This study shows that compared to uncoated aluminium, the anti-freeze proteins functionalized surfaces exhibit a higher and narrower range of freezing temperature. It was found that these proteins that keep living organisms from freezing in cold environment act in the opposite way once immobilized on surfaces by promoting ice nucleation. Some suggestions regarding the mechanism of action of the observed phenomena were proposed based on the Classical Nucleation Theory （CNT）.

关键词： anti-freeze protein surface functionalization ice nucleation temperature ice-like monolayer

Nano-scale coating wear measurement by introducing Raman-sensing underlayer

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Journal of Materials Science & Technology 2022年第1期96卷 285-294页

作者： Nan Xu Chun Wang Liuquan Yang Eric Kumi Barimah Gin Jose anne neville Ardian Morina Institute of Functional Surfaces School of Mechanical EngineeringUniversity of LeedsLeedsLS29JTUnited Kingdom School of Chemical and Process Engineering University of LeedsLeedsLS29JTUnited Kingdom

For gaining fundamental insight into coating wear mechanisms and increasing operational efficiency and automation degree of equipment in important application fields of coating techniques,it is of great importance to developing novel wear measurement techniques enabling nanoscale studies of coating wear in the running process,but this remains a significant ***,a facile strategy is reported to achieve accurate coating thickness quantification at nanoscale level,which is based on a bilayer structure:a top target layer of a-C:H(hydrogenated amorphous carbon)film is considered as a light attenuating and anti-wear layer while underlayer of silicon serves as Raman-sensing *** constructing the relationship between the thickness of a-C:H and Raman intensity of attenuated silicon signal,the coating thickness quantification method is established and successfully applied to quantify coating wear in the friction *** approach can effectively avoid remarkable errors caused by tribo-induced effects in the interface regions,demonstrating its advantage in error *** about these tribo-induced effects are also elucidated by a combination of Raman spectroscopy,optical profilometer,EELS,and *** particular,the proposed approach enables the possibility of measuring coating wear with oil film on top,which breaks an important limitation of existed wear measurement methods,i.e.,incapable of applying in oil-lubricated *** approach can be used to quantify the wear condition of diverse target coatings and has the potential of online wear monitoring when combining a compact laser excitation and detection system.

关键词： Coating Wear measurement Raman Layered structure Nanoscale

表面粗糙度对Al_2O_3增强Y-TZP陶瓷材料生物摩擦学特性的影响

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润滑与密封 2007年第2期32卷 51-53页

作者：梁小平 anne neville 天津工业大学改性与功能纤维天津市重点实验室天津300160 英国利兹大学机械学院

采用销-盘式摩擦磨损试验机研究了氧化铝增强氧化锆陶瓷(ADZ)的表面粗糙度对ADZ/316L不锈钢摩擦副的摩擦磨损性能的影响。结果表明:在小牛血清润滑下,随着陶瓷表面粗糙度的降低,ADZ陶瓷和316L不锈钢的摩擦因数和磨损率均呈降低趋势。但... 详细信息

采用销-盘式摩擦磨损试验机研究了氧化铝增强氧化锆陶瓷(ADZ)的表面粗糙度对ADZ/316L不锈钢摩擦副的摩擦磨损性能的影响。结果表明:在小牛血清润滑下,随着陶瓷表面粗糙度的降低,ADZ陶瓷和316L不锈钢的摩擦因数和磨损率均呈降低趋势。但是对于表面粗糙度最高的陶瓷,由于Fe转移膜的物理吸附,出现了“负磨损”现象。

关键词： ADZ陶瓷 316L不锈钢表面粗糙度摩擦磨损

不同润滑液下的Al_2O_3增强Y-TZP陶瓷/316L不锈钢生物摩擦学特性

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润滑与密封 2007年第3期32卷 67-69页

作者：梁小平 anne neville 天津工业大学改性与功能纤维天津市重点实验室天津300160 英国利兹大学机械学院

采用销-盘式摩擦磨损试验机研究了氧化铝增强氧化锆(ADZ)陶瓷材料/316L不锈钢摩擦副在去离子水和小牛血清2种不同介质润滑下的生物摩擦磨损行为,并利用SEM观察了磨损表面形貌。结果表明:与去离子水相比,在小牛血清润滑条件下ADZ陶瓷的... 详细信息

采用销-盘式摩擦磨损试验机研究了氧化铝增强氧化锆(ADZ)陶瓷材料/316L不锈钢摩擦副在去离子水和小牛血清2种不同介质润滑下的生物摩擦磨损行为,并利用SEM观察了磨损表面形貌。结果表明:与去离子水相比,在小牛血清润滑条件下ADZ陶瓷的摩擦因数和磨损率降低。在去离子水润滑条件下ADZ陶瓷材料的磨损为轻微磨损,相应的磨损机制为塑性变形和微犁削;而在小牛血清润滑条件下,ADZ陶瓷材料的磨损为微量磨损,磨损过程类似抛光作用。

关键词： ADZ陶瓷 316L不锈钢去离子水小牛血清摩擦磨损

Gastroesophageal signet ring cell carcinoma morbidity and mortality: A retrospective review

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1629-1636页

作者： Megan Grinlinton Chris Furkert Andrew Maurice neville Angelo Michael Booth Department of General Surgery North Shore HospitalAuckland 0620New Zealand Department of Pathology North Shore HospitalAuckland 0620New Zealand

BACKGROUND Upper gastrointestinal(GI)signet ring cell carcinomas(SRCC)confer a poor *** benefit of operative intervention for this patient group is contro-versial in terms of overall *** To investigate factors relating to survival in patients with upper GI *** A retrospective,tertiary,single-centre review of patients who were diagnosed with oesophageal,gastroesophageal junction and gastric SRCC was *** primary outcome was to compare mortality of patients who underwent operative management with those who had nonoperative ***-dary outcomes included assessing the relationship between demographic and histopathological factors,and *** One hundred and thirty-one patients were *** one-year survival for the operative group was 81%and for the nonoperative group was 19.1%.The five-year survival in the operative group was 28.6%vs 1.5%in the nonoperative *** difference in overall survival between groups was statistically significant(HR 0.19,95%CI(0.13-0.30),P<0.001).There was no difference in survival when ad-justing for age,smoking status or *** multivariate analysis,patients who underwent surgical management,those with a lower stage of disease,and those with a lower Charlson Comorbidity Index(CCI)had significantly improved *** Well-selected patients with upper GI SRCC appear to have reasonable medium-term survival following *** surgery to a carefully selected patient group may improve the outcome for this disease.

关键词： Signet ring cell carcinoma Gastric cancer Oesophageal cancer Poorly cohesive gastric cancer Diffuse gastric cancer

2205双相不锈钢在高温地热含CO2/H2S流体中的腐蚀行为研究

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2205双相不锈钢在高温地热含CO2/H2S流体中的腐蚀行为研究

Mitochondrial therapeutics and mitochondrial transfer for neurodegenerative diseases and aging

第十一届全国腐蚀与防护大会

作者：刘慧枫孙建波 neville anne 花勇中国石油大学材料科学与工程学院 University of Leeds Institute of Functional Surfaces School of Mechanical Engineering

开发利用地热能对于推进能源革命,建设清洁低碳、安全高效的能源体系,提高能源供给保障能力具有重要的意义。地热开采的高温高压、高含CO/HS环境使井筒材料的选择更倾向于高等级的耐蚀合金。对价格相对低廉且具有较好耐蚀性的双相不锈钢... 详细信息

开发利用地热能对于推进能源革命,建设清洁低碳、安全高效的能源体系,提高能源供给保障能力具有重要的意义。地热开采的高温高压、高含CO/HS环境使井筒材料的选择更倾向于高等级的耐蚀合金。对价格相对低廉且具有较好耐蚀性的双相不锈钢(DSS)的合理使用,有可能大幅降低地热开发的成本。但关于2205双相不锈钢在苛刻地热条件下的腐蚀行为和腐蚀机理的认识远远不够。本研究旨在填补2205 DSS在含CO/HS高温地热环境中腐蚀行为研究的知识空白,以揭示2205DSS在100℃至300℃温度范围内的腐蚀产物演变和CO/HS分压对2205 DSS腐蚀的影响。本文通过腐蚀模拟试验,电化学阻抗谱(EIS)、循环极化曲线(CP)等电化学测量以及扫描电镜(SEM)、拉曼光谱(Raman)、X射线光电子能谱(XPS)、聚焦离子束(FIB)/透射电子显微镜(TEM)等表面分析技术,结合热力学计算系统地研究了温度和CO/HS分压对2205 DSS腐蚀行为的影响,并探讨了高温高压CO/HS环境中2205 DSS腐蚀产物膜的形成机理。结果表明,在CO环境中,腐蚀初期2205 DSS耐蚀性随温度和压力升高而下降(图1)。150℃下2205 DSS生成典型的钝化膜,主要由CrO和Cr(OH)非晶层组成;而在300℃观察到双层腐蚀产物膜的生长,包含纳米晶FeCrO、CrOOH和单晶NiFeO。在CO和HS共存条件下,HS在腐蚀过程中起了主导作用,随着HS分压的增加,2205 DSS维钝电流密度升高,点蚀电位显著降低;2205 DSS试样表面局部有明显的黑色腐蚀产物覆盖,主要成分是FeS和FeS;在腐蚀产物覆盖部位,相界及铁素体相优先溶解,发生了明显的局部腐蚀。在以上实验结果的基础上提出了在CO和HS共存条件下腐蚀机理模型。

关键词： 2205双相不锈钢腐蚀产物膜地热热力学 CO2/H2S

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Neural Regeneration Research 2025年第3期20卷 794-796页

作者： neville Ng Michelle Newbery Nicole Miles Lezanne Ooi Molecular Horizons and School of Chemistry and Molecular Bioscience University of WollongongWollongongNSWAustralia

Mitochondrial dysfunction and neurodegeneration:Progressive neurodegenerative diseases affect a significant proportion of the population;in a single year,there are as many as 276 million disabilities and 9 million dea... 详细信息

关键词： degenerative diseases Mitochondrial