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Experiment and Analysis of Compatibility between New Phase Change Mixed Molten Salt and 316L Stainless Steel

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Journal of Thermal Science 2024年第6期33卷 2259-2273页

作者： ren chenxing ZHENG Chenghang GAO Xiang State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhou 310027China Institute of Carbon Neutrality Zhejiang UniversityHangzhou 310027China Baima Lake Laboratory Zhejiang UniversityHangzhou 310051China

Molten salt is considered as a promising heat storage and heat transfer medium due to its efficient thermophysical *** order to study the compatibility of five new mixed molten salts obtained with KNO_(3),NaNO_(3),K,CO_(3),Ca(NO_(3))_(2)·4H_(2)O,ZnCl_(2),NaF,Na_(2)CO_(3),NaCl and MgO as materials and 316L stainless steel,corrosion weight loss,scanning electron microscopy,elemental analysis and XRD were used to analyze the compatibility of 316L stainless steel in the new mixed molten salt at different time and *** corrosion behavior under the conditions was studied and *** compatibility data was obtained,and the corrosion mechanism of 316L stainless steel in mixed molten salts was *** results show that the corrosion weight of 316L stainless steel increases,and the corrosion degree of grain,crystal crack depth and oxidation degree increase gradually with the increase of temperature and *** corrosion of molten salt on alloy is mainly caused by the selective diffusion loss and corrosion of Cr,Fe and other elements,and is accompanied by the formation of different metal *** formation of metal oxides can slow down metal corrosion and loss to a certain *** corrosion results under different working conditions show that 316L stainless steel has good compatibility with the new mixed molten salt,and has certain application value in the field of heat transfer and energy storage.

关键词： molten salt 316L stainless steel corrosion resistance heat treatment

A　DEVELOPMENT　STUDY　OF　CAST　COPPER　ALLOYWITH　HIGH　STrenGTH　AND　HEAT－RESISTANCE

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Acta Metallurgica Sinica(English Letters) 1996年第3期9卷 217-222页

作者： WANG Zheng ren chenxing and WANG Suying(Department of Materials Science, Zhengzhou Institute of Technology, Zhengzhou 450002, China)

By means of Precipitation hardening, a cast copper alloy with high strength and heatresistance named Cu-6Ti-Cr-Al has been developed. This alloy has good castability. After water quenching at 860℃ for 1 h and aging at 450℃ for 4 h, the tensile strength, σ_b, is greater than 890MPa and the compressive strength, σ_(bc), reaches 1300MPa, while the ratio of compression, ε_c, is maintained at 20%. When the environmental temperature is raised to 450℃, the mechanical properties do not show any appreciable loss. These copper alloy castings have been used on the roll sleeves of rubber formers and the journal bearings of sheet mills. The results have shown that the service life of these parts is much longer than that of aluminium bronze and 904alloy castings. In the present work, the microstructure, mechanical properties and strengthening mechanism were investigated.

关键词： cast copper alloy mechanical properties microstructure precipitation hardening

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“双碳”背景下我国低碳电力发展研究

热力发电 2024年第2期53卷 1-7页

作者：任晨星任清洁高翔浙江大学能源清洁利用国家重点实验室浙江杭州310027 华电陕西能源有限公司陕西西安710016

在“十四五”规划中提出的“碳中和”以及“碳达峰”目标对电力行业各方面的发展产生了深层次的影响,电力行业向低碳方向转型已成为主流趋势。通过阐述低碳电力体系中的低碳电厂、低碳电网、低碳能源消费以及相关评价技术,说明了该体系... 详细信息

在“十四五”规划中提出的“碳中和”以及“碳达峰”目标对电力行业各方面的发展产生了深层次的影响,电力行业向低碳方向转型已成为主流趋势。通过阐述低碳电力体系中的低碳电厂、低碳电网、低碳能源消费以及相关评价技术,说明了该体系在节能减排、环境保护方面有着高效、清洁、可循环的低碳属性。同时,分析了国际低碳形式变化对我国的影响以及“双碳”政策具体落实过程中的相关问题,为“双碳”战略的执行以及电力行业的低碳转型提供了新的科研思路。

关键词：碳中和碳达峰低碳电力低碳电网节能减排

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热速处理对Mg-7Al-0.4Zn-0.2Mn合金耐腐蚀性能的影响

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中国腐蚀与防护学报 2006年第3期26卷 141-145页

作者：关绍康陈晶阳胡俊华任晨星杨卿郑州大学材料科学与工程学院郑州450002

测定自腐蚀电位、盐雾腐蚀速率和观察试样盐雾腐蚀表面形貌,研究了热速处理对Mg-7Al-0.4Zn-0.2Mn合金耐腐蚀性能的影响.结果表明:合金的腐蚀行为受到显微组织和铁含量的共同影响.过热温度(Ts)为810℃时,热速处理对合金耐腐蚀性能的改善... 详细信息

测定自腐蚀电位、盐雾腐蚀速率和观察试样盐雾腐蚀表面形貌,研究了热速处理对Mg-7Al-0.4Zn-0.2Mn合金耐腐蚀性能的影响.结果表明:合金的腐蚀行为受到显微组织和铁含量的共同影响.过热温度(Ts)为810℃时,热速处理对合金耐腐蚀性能的改善作用并不大;过热温度为850℃时,热速处理显著细化了合金晶粒,β相的尺寸和间距变小,β相对α相腐蚀的阻碍作用增加,而且合金中的铁含量并没有提高,从而改善了合金在试验条件下的耐腐蚀性能;过热温度为890℃时,组织中存在热裂纹和显微疏松缺陷,合金含铁量显著增高,合金的耐腐蚀性能下降.相同的过热温度下,合金的耐腐蚀性能随着激冷速度(Vc)的增大而逐步改善.综合考虑合金的显微组织和耐腐蚀性能,优化的热速处理工艺为:Ts=850℃,Vc=2.0℃/s.此时,合金的耐腐蚀性能达到试验的最佳值,自腐蚀电位比未热速处理合金提高约15 mV,盐雾腐蚀速率比未热速处理合金降低21.9%.

关键词： Mg-7Al-0.4Zn-0.2Mn合金热速处理显微组织晶粒细化耐腐蚀性能

微量锶对镁锰牺牲阳极显微组织和电化学性能的影响

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中国腐蚀与防护学报 2006年第3期26卷 166-170页

作者：侯军才关绍康任晨星徐河房中学赵彦学郑州大学材料科学与工程学院郑州450002 维恩克科技集团北京100028

采用OM、SEM、EDS、XRD及电化学测试等手段,研究了微量Sr对镁锰牺牲阳极显微组织和电化学性能的影响.结果表明,微量Sr的加入能够细化晶粒,当Sr含量从0增加到0.30mass%时,合金的晶粒尺寸由900μm减小到80μm.随着Sr含量的增加,阳极的电... 详细信息

采用OM、SEM、EDS、XRD及电化学测试等手段,研究了微量Sr对镁锰牺牲阳极显微组织和电化学性能的影响.结果表明,微量Sr的加入能够细化晶粒,当Sr含量从0增加到0.30mass%时,合金的晶粒尺寸由900μm减小到80μm.随着Sr含量的增加,阳极的电流效率升高,开路电位负移,当Sr加入量为0.10%时,电流效率和开路电位达到最佳,其值分别为54.5%和-1.73VSCE;进一步增加Sr的含量,阳极电流效率下降,开路电位正移.研究认为,Sr含量不超过0.10%时,晶界析出的Mg17Sr2(弱阴极相)和α-Mg基体(阳极相)组成了电偶对,阻碍了晶间腐蚀,减少了晶粒大块脱落,电流效率升高,同时晶粒细化,晶界面积变大,杂质相(阴极相)分布更均匀,开路电位负移;Sr含量大于0.10%时,过量的Mg17Sr2相作为阴极相加大了镁阳极的腐蚀,电流效率下降,开路电位正移.

关键词：锶镁锰牺牲阳极显微组织电化学性能

开展多层次实验教学培养材料类本科生的创新实践能力

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中国现代教育装备 2014年第17期 56-59页

作者：朱世杰王利国任晨星关绍康郑州大学材料科学与工程学院河南郑州450001

介绍了课程教学和实验教学的方法和体会。以科研实验室为依托,将基础理论与生物镁合金设计、加工、合金熔炼、塑性热处理和表面改性等前沿研究相结合,向学生讲授基础理论的同时,结合课题组的科研项目,选拔本科生提前进入实验室,组成自... 详细信息

介绍了课程教学和实验教学的方法和体会。以科研实验室为依托,将基础理论与生物镁合金设计、加工、合金熔炼、塑性热处理和表面改性等前沿研究相结合,向学生讲授基础理论的同时,结合课题组的科研项目,选拔本科生提前进入实验室,组成自主性创新实验小组,开展创新实验。通过课程实验、综合设计实验、创新实验和创业实验等多层次实验环节,调动学生学习的主动性,培养其实验基本技能、创新能力和团队合作精神。

关键词：实验教学创新实验教学方法材料

QTL Mapping for Cucumber Fruit Size and Shape with Populations from Long and Round Fruited Inbred Lines

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Horticultural Plant Journal 2020年第3期6卷 132-144页

作者： Zhihui Gao Haiyang Zhang chenxing Cao Jing Han Hao Li Zhonghai ren State Key Laboratory of Crop Biology/Shandong Collaborative Innovation Center of Fruit&Vegetable Quality and Efficient Production/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huang-Huai Region Ministry of Agriculture/College of Horticulture Science and EngineeringShandong Agricultural UniversityTai’anShandong 271018China

To gain insight into the molecular and genetic basis of fruit size and shape in cucumber,we conducted Quantitative Trait Locus(QTL)mapping with F2 and BC1F1 populations derived froma cross between the Northern-China type inbred line CNS21 and the Southern-China type inbred line *** were evaluated during two developmental stages,ovary at anthesis and commercial fruit(immature fruit).A total of 13 major-effect QTLs(R2>10%)were detected for six traits,and one of them,fruit shape index 2.1,explained more than 50%of phenotypic *** QTLs distributed on chromosome(chr)1 and *** constructed a physical map containing almost all of the QTLs with their physical location from previous *** fruit size and shape,the highest number of QTLs were mapped on chr1 and chr6,and the fewest number were mapped on chr2 and *** least one consensus region was presented on each *** addition,three candidate genes were predicted between the long-fruited and round-fruited inbred lines by comparing the sequences of the consensus region of chr3,where many QTLs for marketable fruit length had been *** results provide a base for additional QTLs and molecular markers for fruit size and shape in cucumber breeding.

关键词： Cucumber QTL mapping Fruit size Fruit shape Molecular marker Indel SNP Candidate gene

Fungal diversity rather than bacterial diversity drives the ecosystem multifunctionality of vineyards in a semi-arid region

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International Journal of Agricultural and Biological Engineering 2021年第6期14卷 126-136页

作者： Bingbing Duan Yizhao ren Leqi Zhang chenxing Suzhou Guoqiao Chen Ping Cui Yusong Zhangyang Wei Liu Hasmik Merkeryan Xu Liu College of Enology Northwest A&F UniversityYangling 712100ShaanxiChina Penglai Wine College Yantai Institute of Science and TechnologyYantai 265600ShandongChina Grape Industrial Park Management Committee of the Eastern Foot of Helan Mountain in Ningxia Yinchuan 750004China Horticulture Research Institute Sichuan Academy of Agricultural SciencesChengdu 610066China Ningxia Helan Mountain’s East Foothill Wine Experiment and Demonstration Station of Northwest A&F University Yongning 750104NingxiaChina

The presence of multiple ecosystem functions and services(i.e.,ecosystem multifunctionality)has been proven to be maintained by biodiversity in natural terrestrial ***,the mechanisms by which microbial diversity drives ecosystem functions in vineyards and the effects of ecosystem functions on wine quality remain ***,fifteen vineyards from five wine sub-regions(Shizuishan,Yinchuan,Yuquanying,Qingtongxia,and Hongsipu)in Ningxia were selected to assess the microbial community structure,ecosystem multifunctionality,and wine ***,each index differed among the vineyards from these five wine sub-regions in ***-throughput sequencing revealed that bacterial and fungal communities varied among these *** communities were dominated by Actinobacteria,Proteobacteria,Chloroflexi,and *** was the dominant fungal phylum,followed by Basidiomycota and *** addition,fungal Shannon diversity rather than bacterial Shannon diversity showed a positive relationship with ecosystem *** analysis revealed that ecosystem multifunctionality was positively correlated with wine acidity and negatively correlated with pH value and residual sugar content of *** chemical functions exhibited relationships with wine quality being similar to those of ecosystem multifunctionality;i.e.,positively related to wine acidity but negatively related to wine pH and residual sugar ***,soil physical functions were negatively correlated with the alcohol and anthocyanin content of *** research results show that the ecosystem functions maintained by fungal diversity could be attributed to wine quality of vineyards.

关键词： microbial diversity multifunctionality terroir wine quality wine sub-regions

磷酸根对水稻土中重金属镉汞铅吸附特性的影响研究

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资源调查与环境 2009年第2期30卷 130-138页

作者：周涛发陶春军李湘凌陈永宁陈兴仁贾十军袁峰陈富荣合肥工业大学资源与环境工程学院合肥230009 中国地质大学地质过程与矿产资源国家重点实验室武汉430074 安徽省地质调查院合肥230001

以合肥市郊的大兴镇和义城镇地区水稻土为主要研究对象,利用批量平衡法初步研究了重金属在两种土壤中的吸附热力学,据此分析研究水稻土对重金属的吸附性能及机理。在施磷情况下两种水稻土对三种重金属Cd,Hg,Pb吸附自由能均为负值,是常... 详细信息

以合肥市郊的大兴镇和义城镇地区水稻土为主要研究对象,利用批量平衡法初步研究了重金属在两种土壤中的吸附热力学,据此分析研究水稻土对重金属的吸附性能及机理。在施磷情况下两种水稻土对三种重金属Cd,Hg,Pb吸附自由能均为负值,是常温常压下可以自发进行的过程,是物理和化学吸附并存的过程。两种水稻土对三种重金属Cd,Hg,Pb吸附过程均是熵增过程。

关键词：水稻土吸附热力学重金属