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Nanosecond pulsed laser-assisted modified copper surface structure:Enhanced surface microhardness and microbial corrosion resistance

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Journal of Materials Science & Technology 2022年第12期107卷 111-123页

作者： boxin wei Jin Xu Liqun Gao Hui Feng Jiajun Wu Cheng Sun Zhenyao Wang wei Ke School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110169China Institutes for Robotics and Intelligent Manufacturing Chinese Academy of SciencesShenyang 110169China

Microbiologically influenced corrosion(MIC) is an unavoidable problem in several industries. Copper(Cu)and its alloys are widely used engineering materials. However, MIC of Cu remains a persistent challenge to their performance and functional lifetime under aggressive environments. This study investigated nanosecond pulsed laser processing(LP), which may enhance the corrosion resistance of Cu. The microstructural evolution and corrosion behavior of LP-Cu in the presence of sulfate-reducing bacteria(SRB) were evaluated. Typical deformation-induced microstructural features of high-density dislocations were analyzed on the top surface of LP-Cu coupon. Electrochemical measurements suggested that LP-Cu coupons exhibited better corrosion resistance in SRB-inoculated solution compared with their original counterpart. The enhanced corrosion resistance by LP primarily resulted from the combined influences of compressive residual stress and work hardening in the surface. However, overlap percentage played a key role in improving corrosion resistance. LP produced optimal corrosion resistance at 50% overlap. Therefore, this study introduces a unique and an option for anticorrosion control in manufacturing processes and potentially implements it onto other materials to improve its microbial corrosion resistance through LP.

关键词： Pure copper Laser processing Microbiologically influenced corrosion Pitting Severe plastic deformation

Oxidation resistance of powder metallurgy Ti-45Al-10Nb alloy at high temperature

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International Journal of Minerals,Metallurgy and Materials 2022年第12期29卷 2232-2240页

作者： Xuchen Jin Peihao Ye Hongrui Ji Zhuanxia Suo boxin wei Xuewen Li Wenbin Fang School of Materials Science and Engineering Harbin University of Science and TechnologyHarbin 150040China The State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China

TiAl alloy with high Nb content,nominally Ti-45Al-10Nb,was prepared by powder metallurgy,and the oxidation resistance at 850,900,and 950℃was *** high-temperature oxidation-resistance mechanism and oxidation dynamics were discussed following the oxide skin morphology and microstructural evolution *** oxide skin structures were similar for 850 and 900℃,with TiO_(2)+Al_(2)O_(3)mixture covering TiO_(2)with dispersed Nb_(2)O_(5).At 950℃,the oxide skin was divided into four sublayers,from the outside to the parent metal:loose TiO_(2)+Al_(2)O_(3),dense Al_(2)O_(3),dense TiO_(2)+Nb_(2)O_(5),and TiO_(2)matrix with dispersed Nb_(2)O_(5).The Nb layer suppressed the outward diffusion of Ti atoms,hindering the growth of TiO_(2),and simultaneously promote the formation of a continuous Al_(2)O_(3)protective layer,providing the alloy with long-term high-temperature oxidation resistance.

关键词： Ti-45Al-10Nb elemental powder metallurgy microstructure high-temperature oxidation resistance

Effect of sulfate-reducing bacteria on corrosion of X80 pipeline steel under disbonded coating in a red soil solution

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Journal of Materials Science & Technology 2021年第28期87卷 1-17页

作者： boxin wei Jin Xu Qi Fua Qingyu Qin Yunlong Bai Cheng Sun Chuan Wang Zhenyao Wang wei Ke Liaoning Shenyang Soil and Atmosphere Material Corrosion National Observation and Research Station Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China

Effect of sulfate-reducing bacteria on the corrosion behaviors of API-X80 pipeline steel has been studied in crevices under simulated disbonded coatings in red soil *** results show that there are amounts of SRB in the crevice under the simulated disbonded coating in the red soil solution during the whole period of *** electrochemical impedance spectroscopy shows that SRB can enhance the corrosion of the steel in the crevice under the simulated disbonded coating,and the thermodynamic analyses indicate that SRB can accelerate the corrosion of steel using not only sulfate but also ferric hydroxide as electron acceptors.

关键词： Sulfate-reducing bacteria influenced corrosion Disbonded coating Red soils X80 pipeline steel EIS

Low thermal conductivity of dense(TiZrHfVNbTa)C_(x) high-entropy carbides by tailoring carbon stoichiometry

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Journal of Advanced Ceramics 2023年第1期12卷 49-58页

作者： Lei CHEN Wen ZHANG Wenyu LU boxin wei Sijia HUO Yujin WANG Yu ZHOU Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Advanced Structural–Functional Integration Materials&Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150001China

Transition metal carbides are promising candidates for thermal protection materials due to their high melting points and excellent mechanical ***,the relatively high thermal conductivity is still a major obstacle to its application in an ultra-high-temperature insulation *** this work,the low thermal conductivity of dense(TiZrHfVNbTa)Cx(x=0.6-1)high-entropy carbides has been realized by adjusting the carbon *** thermal conductivity gradually decreases from 10.6 W·m^(−1)·K^(−1) at room temperature to 6.4 W·m^(−1)·K^(−1) with carbon vacancies *** to enhanced scattering of phonons and electrons by the carbon vacancies,nearly full-dense(97.9%)(TiZrHfVNbTa)C_(0.6) possesses low thermal conductivity of 6.4 W·m^(−1)·K^(−1),thermal diffusivity of 2.3 mm^(2)·s^(−1),as well as electrical resistivity of 165.5μΩ·*** thermal conductivity of(TiZrHfVNbTa)C_(0.6) is lower than that of other quaternary and quinary high-entropy carbide ceramics,even if taking the difference of porosity into account in some cases,which is mainly attributed to compositional complexity and carbon *** provides a promising route to reduce the thermal conductivity of high-entropy carbides by increasing the number of metallic elements and carbon vacancies.

关键词： high-entropy carbides thermal conductivity compositional complexity carbon vacancies

Phase transition of multi-component(TiZrVNb)C ceramics—Part I:Phase decomposition induced by carbon content

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Journal of Advanced Ceramics 2024年第5期13卷 679-688页

作者： Qingyi Kong Rao Zhang Lei Chen Sijia Huo Wenyu Lu Yujin Wang boxin wei Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced Structure‒Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150001China National Key Laboratory of Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

Phase decomposition can effectively enhance the mechanical properties of carbide ceramics and can overcome the difficulty of enhancing the mechanical properties of single-phase multicomponent carbide *** this work,a series of nonstoichiometric(TiZrVNb)Cx ceramics were prepared by spark plasma sintering(SPS)at different *** effects of the carbon content on the phase composition,microstructure evolution,and mechanical properties were investigated in *** decomposition occurred with decreasing carbon *** different solid solutions of(Ti,V)-rich and Zr-rich phases formed from the decomposition of equimolar single-phase solid solutions,namely,the Zr-poor phase and Zr-rich phase,*** distribution of Nb element is relatively *** semicoherent interfaces between the Zr-poor phase and the Zr-rich phase can harden and strengthen effectively under the synergistic effect of grain *** with phase decomposition structures have apparent advantages compared to single-phase high-entropy *** work provides an important train of thought for the microstructure tailoring and properties optimization of multi-component carbide ceramics.

关键词： multicomponent ceramics nontoichiometry microstructure evolution phase decomposition mechanical properties

Research Progress on Preparation and Properties of Zirconium Carbide Matrix Composites

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China's Refractories 2015年第3期24卷 1-11页

作者： WANG Yujin wei boxin CHEN Lei OUYANG Jiahu ZHOU Yu Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of Technology

Zirconium carbide（ZrC） exhibits considerable potential for applications as aerospace thermal protection and the Generation-Ⅳ nuclear fuel inert materials due to its high melting point,exceptional hardness,good ablation resistance and low neutron absorption ***,low sinterability of ZrC powders and poor fracture toughness and reliability of bulk ceramics limit their wide applications in extreme *** paper reviews the state of the art of preparation and properties of ZrC *** the sintering process and tailoring the chemical constituents of raw powders and sintering aids could improve sinterability to produce dense bulk *** additives such as refractory metals,carbides,silicides,oxides,or carbon fibers are introduced into the ZrC matrix in order to improve fracture toughness,oxidation resistance or thermal shock resistance,*** studies are needed to explore the effects of intrinsic defects（vacancies,dislocations,and grain or phase boundaries,etc.） and additives on microstructure and properties at elevated temperatures.

关键词： zirconium carbide composites sintering mechanical properties

Effects of alternating current on microbiologically synergistic corrosion of pipeline steel X80 applied by elastic stress

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Corrosion Communications 2024年第1期13卷 1-16页

作者： Zheng Cai Qingyu Qin Ying Liu boxin wei Naiyan Zhang Jin Xu Qi Fu Changkun Yu Cheng Sun School of Materials Science and Engineering University of Science and Technology of China Liaoning Shenyang Soil and Atmosphere Corrosion of Material National Observation and Research Station Institute of Metal Research Chinese Academy of Sciences SAIC GM Wuling Automobile Co. Ltd. North Huajin Chemical Industry Group Co. Ltd. Engineering Technology Research Institute of PetroChina Southwest Oil and Gas Field Company

Microorganisms play an important role in multi-factor synergistic corrosion. The synergistic effects of which are greatly stronger than elastic stress and alternative current. Changes of alternative current directly dominate the effect of microbial synergy. With increasing AC current density, corrosion rate of pipeline steel X80 increased first and then decreased, reaching a peak at 100 A m-2. Number of SRB cells vaired as a function of AC current density. Lower current density promoted SRB growth while high current density inhibited SRB growth. When sessile cells are more than 10～5 cell cm-2, the dominant role of microorganisms is strong, and corrosion rate increases with current density. The maximum value is reached at 100 A m-2. However, when the cells are less than 10～3 cell cm-2, the dominant effect is greatly reduced, leading to a reduction in the synergistic effect of the multi-factor, and finally reduced corrosion rate to 200 A m-2.

关键词： Oil and gas pipeline X80 pipeline steel Sulfate-reducing bacteria Alternating current Elastic stress

轴向应变作用下含腐蚀缺陷X80管道氢渗透的有限元分析

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表面技术 2024年第8期53卷 84-92,132页

作者：刘韦辰韦博鑫尹航许进于长坤孙成中国科学院金属研究所、辽宁沈阳土壤大气环境材料腐蚀国家野外科学观测研究站沈阳110016 中国科学技术大学材料科学与工程学院沈阳110016

目的研究在役天然气管道掺氢输送条件下氢原子在管道腐蚀缺陷处的扩散和分布情况及应变对腐蚀缺陷处氢扩散行为的影响。方法利用COMSOL软件,将固体力学模型和扩散模型相结合,建立了基于有限元的氢原子扩散渗透模型,研究了在纵向拉伸应... 详细信息

目的研究在役天然气管道掺氢输送条件下氢原子在管道腐蚀缺陷处的扩散和分布情况及应变对腐蚀缺陷处氢扩散行为的影响。方法利用COMSOL软件,将固体力学模型和扩散模型相结合,建立了基于有限元的氢原子扩散渗透模型,研究了在纵向拉伸应变作用下X80钢制管道不同尺寸腐蚀缺陷处氢原子的分布情况。结果在没有拉伸应变的情况下,氢原子一旦进入管道内,在浓度梯度的驱动下,沿径向梯度扩散到管道内。当在管道上施加应变时,氢原子的扩散受到静水应力的驱动。氢原子在腐蚀缺陷处的最大浓度超过了进入管道的氢原子初始浓度。结论氢原子在腐蚀缺陷处聚集。此外,施加的拉伸应变也影响氢原子聚集的位置,随着缺陷长度的减小和深度的增大,在内壁腐蚀缺陷处,更多的氢原子会集中在缺陷中心和尖端。

关键词： X80管道氢扩散腐蚀缺陷应变有限元模拟点蚀

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临氢环境下管线钢氢损伤机理研究进展

中国腐蚀与防护学报 2024年第5期44卷 1125-1133页

作者：李鑫韦博鑫鲁仰辉孙晨于文涛徐猛刘伟国家电投集团科学技术研究院有限公司北京102200 中国科学院金属研究所沈阳110016

当前全球低碳绿色发展已刻不容缓,氢能作为零碳能源呼声高涨。氢储运环节是产业链中极其重要的一环,而管道输氢最为经济高效,但管线钢处于直接氢气环境中,面临的氢损伤问题再度成为学界热门。文章重点综述了氢分子在钢表面转化为氢原子... 详细信息

当前全球低碳绿色发展已刻不容缓,氢能作为零碳能源呼声高涨。氢储运环节是产业链中极其重要的一环,而管道输氢最为经济高效,但管线钢处于直接氢气环境中,面临的氢损伤问题再度成为学界热门。文章重点综述了氢分子在钢表面转化为氢原子的吸附渗入过程和氢脆微观机理的最新研究进展;总结了管线钢强度、微观组织、氢陷阱等材料性质和氢气分压、温度、载荷等外部环境因素与氢损伤之间的关系,进一步归纳了预防和抑制管线钢氢脆行为的方法,最后对管线钢氢损伤研究过程中当前面临的难题提出了具体建议。

关键词：氢气管道氢脆机理氢吸附解离氢损伤影响因素