Corrosion Communications最新文献_第7页

Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer 用耐火陶瓷阻挡层提高钛合金的阻燃性

Corrosion Communications Pub Date : 2023-12-01 DOI: 10.1016/j.corcom.2023.02.002

Lin Chen, Yu Dong, Yun-Qi Tong, Mei-Jun Liu, Guan-Jun Yang

{"title":"Improving fire retardancy of Ti alloys with a refractory ceramic barrier layer","authors":"Lin Chen, Yu Dong, Yun-Qi Tong, Mei-Jun Liu, Guan-Jun Yang","doi":"10.1016/j.corcom.2023.02.002","DOIUrl":"https://doi.org/10.1016/j.corcom.2023.02.002","url":null,"abstract":"<div>Reliable service of indispensable titanium alloys in aeroengines is limited by the bottleneck problem of titanium fires. In this study, a tri-layer fire retardant coating with a bi-functional ceramic barrier layer is proposed to suppress titanium fire. Results show that the current coating can increase the fire retardant temperature by ≥ 300 K under droplet ignition. Thermal barrier effect of the YSZ refractory ceramic layer significantly reduces Ti alloy temperature, and oxygen barrier effect prevents active Ti from directly contacting oxygen during the entire ablation process. Therefore, the two barrier effects effectively prevent occurrence of titanium fire. In addition, dissolution of the Ni-based abradable seal coating makes burning TC4 molten droplet extinguished in a short time, thus further inhibiting titanium fire ignition. The present study provides an effective method for reliable service and titanium fire-resistant design of titanium alloys.</div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"12 ","pages":"Pages 19-28"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2667266923000427/pdfft?md5=627d43a5ad03831f1293dd50b726eb90&pid=1-s2.0-S2667266923000427-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138466252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding pit initiation of pipeline steel X100 under cathodic protection potential fluctuating with various duty cycles 了解X100管线钢在阴极保护电位随占空比波动情况下的起坑现象

Corrosion Communications Pub Date : 2023-10-28 DOI: 10.1016/j.corcom.2023.02.001

Mingjie Dai , Y. Frank Cheng , Zhen Wang , Feng Huang , Qian Hu , Jing Liu

引用次数: 0

Zirconium-based conversion coating modified by different amount of chitosan on hot-dip Zn-Al alloy coated steel sheet 不同量壳聚糖改性锆基转化涂层在热镀锌铝合金钢板上的应用

Corrosion Communications Pub Date : 2023-09-17 DOI: 10.1016/j.corcom.2023.01.004

Jie Pan , Ya-jing Ding , Rui-cheng Zhao , Jian Zhang , Yan Li

引用次数: 0

The effects of a corrosion product film on the corrosion behavior of Mg-Al alloy with micro-alloying of yttrium in a chloride solution 腐蚀产物膜对钇微合金化mg -铝合金在氯化物溶液中腐蚀行为的影响

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2022.10.002

Yao Yang , Sijun Cao , Tao Ying , Fuyong Cao , Jingya Wang , Qingchun Zhu , Xiaoqin Zeng

引用次数: 2

Microstructure and corrosion behavior of welded joint between 2507 super duplex stainless steel and E690 low alloy steel 2507超级双相不锈钢与E690低合金钢焊接接头的组织与腐蚀行为

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2022.08.005

Liwei Wang , Yi Ding , Qiankun Lu , Zhao Guo , Yuxi Liu , Zhongyu Cui

引用次数: 0

Tribocorrosion behavior of Co-based self-lubricating composites with varying contents of Ag in NaCl solution 不同银含量co基自润滑复合材料在NaCl溶液中的摩擦腐蚀行为

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2022.10.004

Yang Zhou, Lan Huang, Minghui Chen, Fuhui Wang

引用次数: 0

Mechanically-assisted crevice corrosion and its effect on materials degradation 机械辅助缝隙腐蚀及其对材料降解的影响

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2023.01.002

Weichen Xu , Binbin Zhang , Owen Addison , Xiutong Wang , Baorong Hou , Fei Yu

{"title":"Mechanically-assisted crevice corrosion and its effect on materials degradation","authors":"Weichen Xu , Binbin Zhang , Owen Addison , Xiutong Wang , Baorong Hou , Fei Yu","doi":"10.1016/j.corcom.2023.01.002","DOIUrl":"https://doi.org/10.1016/j.corcom.2023.01.002","url":null,"abstract":"<div>Mechanically-assisted crevice corrosion (MACC) is a synergistic combination of wear and crevice corrosion. The major differences between tribocorrosion, fretting corrosion and MACC relate to the relative scale of motion and contact area, are clarified in this work. Experimental testing methods for MACC and design of simulation apparatuses are compared and discussed. MACC associated with biomedical alloys used as orthopedic implants, screws, and dental implants has been the subject of most recent research regarding this corrosion mechanism. However, there are also many engineering structures where the pre-requisite conditions for MACC are met but have to date received less scientific scrutiny. Examples are tubes and supportive bars/plates constructions, bolt-type structures and rail track foot covered by fastening systems. Reasonable selection of fretting-resistant materials, proper mounting methods and development of lubricating coating and oil/grease would be effective for mitigating MACC, and it is proposed that surface modification regarding contact geometries and surface compliances may have future promise.</div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"11 ","pages":"Pages 23-32"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49711508","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

Understanding of selective oxidation of Fe-Mn binary alloys during continuous annealing through X-ray photoelectron spectroscopy 用X射线光电子能谱理解Fe-Mn二元合金在连续退火过程中的选择性氧化

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2022.10.005

L. Gong , D. Alamarguy , N. Ruscassier , P. Haghi-Ashtiani , M.-L. Giorgi

{"title":"Understanding of selective oxidation of Fe-Mn binary alloys during continuous annealing through X-ray photoelectron spectroscopy","authors":"L. Gong , D. Alamarguy , N. Ruscassier , P. Haghi-Ashtiani , M.-L. Giorgi","doi":"10.1016/j.corcom.2022.10.005","DOIUrl":"https://doi.org/10.1016/j.corcom.2022.10.005","url":null,"abstract":"<div>Selective oxidation of Fe-Mn alloys was characterizied through X-ray photoelectron spectroscopy and scanning/transmission electron microscopy during industrial continuous annealing (in an atmosphere of N2–5 vol.% H2 with traces of water at 800 °C). After annealing, only MnO oxides are formed on and below the surface and few iron oxides appear on the top surface due to oxidation of ambient air or the formation of FeO-MnO solid solutions. Mn concentration profiles exhibit typical selective oxidation and show similar features. Mn concentration first increases to a peak value at a depth of 5–10 nm from surface, and then decreases to the minimum at the oxidation front, following with a floating up and down to bulk composition. According to XPS spectra and Mn concentration profiles as a function of depth, the annealed alloy surfaces can be divided into four zones: ambient air contaminated zone, MnO enrichment zone (external and internal oxidation coexisting here), Mn depletion zone and bulk composition zone. Mn concentration reaches a minimum value at the oxidation front, whose position is deeper with annealing temperature and time increasing. The value of Mn diffusion coefficient in ferrite estimated using diffusion flux at the oxidation front is 2.9 × 10−15 m2 s−1 at 800 °C, which is slightly greater than that in literature.</div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"11 ","pages":"Pages 72-82"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49711736","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

Critical firing conditions for titanium alloys by molten droplet ignition 钛合金熔滴点火的临界燃烧条件

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2022.10.003

Lin Chen, Yu Dong, Yun-Qi Tong, Mei-Jun Liu, Guan-Jun Yang

{"title":"Critical firing conditions for titanium alloys by molten droplet ignition","authors":"Lin Chen, Yu Dong, Yun-Qi Tong, Mei-Jun Liu, Guan-Jun Yang","doi":"10.1016/j.corcom.2022.10.003","DOIUrl":"https://doi.org/10.1016/j.corcom.2022.10.003","url":null,"abstract":"<div>Reliable service of indispensable titanium alloys in aeroengines is limited by titanium fire with unclear critical conditions. In this study, critical conditions in the form of parameter phase diagrams for secondary burning were determined by molten droplet ignition. Finite element analysis (FEA) reveals that the molten droplet size (R0), relative oxygen content (Pr), and initial temperature (T0) significantly affect titanium fire following power exponential laws. In addition, Pr and T0 affect ablation synergically, and a unified empirical relationship for critical ablation of titanium alloy is established. Furthermore, the critical T0 of a typical TC4 alloy under 20% Pr is higher than 973 K, which explains the reliable service performance of TC4 alloy at ≤ 873 K in compressors in commerical air engines. In addition, the critical empirical conditions are consistent with the FEA results, and the deviation occurs due to oxidation at T0 ≥ 673 K. Moreover, the ablated TC4 alloy can be divided into five characteristic zones, and loose and porous oxide scales are formed at the front of the titanium fire. The present study points the way towards long-lifetime services of TC4 alloys through sound titanium fire protection strategies.</div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"11 ","pages":"Pages 33-43"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49711514","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

Electrochemical migration behavior of copper under a thin distilled water layer 铜在蒸馏水薄层下的电化学迁移行为

Corrosion Communications Pub Date : 2023-09-01 DOI: 10.1016/j.corcom.2022.09.004

Kang Qi, Hualiang Huang

引用次数: 0