Eurasian Journal of Physics and Functional Materials最新文献_第8页

An overwiew on corrosion behavior of steels in factory 钢在工厂中的腐蚀行为概述

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-06-22 DOI: 10.32523/ejpfm.2021050203

H. Demiroren

引用次数: 0

Effect of the detonation-spraying mode on the tribological properties of NiCr-Al2O3 coatings 爆轰喷射方式对NiCr-Al2O3涂层摩擦学性能的影响

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050105

B. Rakhadilov, D. Buitkenov, E. Kabdykenova, Zhuldyz Sagdoldina, L. Zhurerova

{"title":"Effect of the detonation-spraying mode on the tribological properties of NiCr-Al2O3 coatings","authors":"B. Rakhadilov, D. Buitkenov, E. Kabdykenova, Zhuldyz Sagdoldina, L. Zhurerova","doi":"10.32523/EJPFM.2021050105","DOIUrl":"https://doi.org/10.32523/EJPFM.2021050105","url":null,"abstract":"The article presents the study results of detonation spraying parameters on the phase composition and tribological properties of NiCr-Al2O3 powder coatings. The spraying was carried out at a ratio of the acetylene-oxygen mixture O2 /C2H2=1.856. The detonation barrel filling volume with an explosive gas mixture varied from 30% to 68%. It is determined that the phase composition of the NiCr-Al2O3 coatings varies depending on the degree of detonation barrel filling. With an increase in the detonation barrel’s filling volume, the intensity of the NiCr diffraction peaks is decreased, and the intensity of the a-Al2O3 reflexes is increased, which indicates an increase in the content of the Al2O3 phase. When low filling volume, there is determined a low coating density and uneven roughness. The tribological test results showed that with an increase in the detonation barrel filling volume, there is a decrease in the wear volume, which confirms the increase in the coatings wear resistance. Determined that the lowest friction coefficient was recorded in the sample obtained at the barrel filling volume 68%. The coatings’ high wear resistance is associated with an increase in the alpha phase volume fraction of a-Al2O3 and coatings density.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45108317","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

Influence of pulsed plasma treatment on phase composition and hardness of Cr3C2-NiCr coatings 脉冲等离子体处理对Cr3C2-NiCr镀层相组成和硬度的影响

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050106

D. Kakimzhanov, B. Rakhadilov, Y. Tyurin, O. Kolisnichenko, L. Zhurerova, M. Dautbekov

引用次数: 4

Non-destructive analysis of materials by neutron imaging at the TITAN facility 用中子成像在TITAN设备上对材料进行无损分析

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050101

K. Nazarov, B. Mukhametuly, S. Kichanov, T. Zholdybayev, A. Shaimerdenov, K. B. Karakozov, D. Dyussambayev, M. Aitkulov, M. Yerdauletov, P. Napolskiy, M. Kenessarin, E. K. Kalymkhan, N. Imamverdiyev, S. Jabarov

引用次数: 5

Mechanisms formation of electron-hole trap centers in LiKSO4 crystall LiKSO4晶体中电子-空穴陷阱中心的形成机制

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050103

T. Nurakhmetov, Z. Salikhodzha, A. Zhunusbekov, A. Kainarbay, D. Daurenbekov, T. Alibay, B. Sadykova, K. Zhangylyssov, B. Yussupbekova, D. Tolekov

引用次数: 2

Energy transfer of intrinsic electronic excitation to impurities in the CaSO4 − Mn crystal CaSO4−Mn晶体中杂质的本征电子激发能量转移

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050104

T. Nurakhmetov, Z. Salikhodzha, K. Zhangylyssov, A. Zhunusbekov, A. Kainarbay, D. Daurenbekov, Zh. Azmagambetova, B. Sadykova, B. Yussupbekova, T. Alibay, D. Tolekov, N. Tulebayeva

引用次数: 1

Measuring the yields and angular distributions of g-quanta from the interaction between 14.1 MeV neutrons and sodium nuclei 测量14.1 MeV中子与钠核相互作用的g量子的产率和角分布

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050102

S. Dabylova, Y. Kopatch, N. Fedorov, D. Grozdanov, I. Ruskov, V. Skoy, K. Hramco, T. Tretyakova, S. Sakhiyev, R. B. Marzhokhov, E. Bogolyubov, V. Zverev, Y. Barmakov

引用次数: 0

Assessment of radiation exposure in the settlements located in Stepnogorsk area 斯捷普诺戈尔斯克地区居民点辐射暴露评估

Eurasian Journal of Physics and Functional Materials Pub Date : 2021-03-25 DOI: 10.32523/EJPFM.2021050107

D. Ibrayeva, M. Aumalikova, K. Ilbekova, M. Bakhtin, P. Kazymbet, Sh.S. Ibrayeva, K. Zhumadilov

{"title":"Assessment of radiation exposure in the settlements located in Stepnogorsk area","authors":"D. Ibrayeva, M. Aumalikova, K. Ilbekova, M. Bakhtin, P. Kazymbet, Sh.S. Ibrayeva, K. Zhumadilov","doi":"10.32523/EJPFM.2021050107","DOIUrl":"https://doi.org/10.32523/EJPFM.2021050107","url":null,"abstract":"The Stepnogorsk area Northern Kazakhstan has a long history mining activities. Mining activities have lots of environmental and health impacts. The aims of this study were to characterizing the general radiological situation of the area and evaluate radiation exposure by scenarios in settlements. In this study radiological assessment was performed for critical group living in the territory contaminated with radionuclides; working and studying at school located on territory former mining site. The annual dose burden is 2.5 mSv y−1 in Zavodskoy, 1.9 mSv y−1 in Kvartsitka and 3.6 mSv y−1 in Aqsu; and exposure from radon is around 11 mSv y−1 at the ground floor, and for teachers - up to 12 mSv*y−1. At settlements, however, under the hypothesis that all food contaminated with radionuclides and vegetables is cultivated locally in the territories with high background level, exposure from ingestion is 9.1 mSv y−1 in Zavodskoy, 8.3 mSv y−1 in Kvartsitka and 11.5 mSv y−1 in Aqsu. The combined effects of environmental problems have culminated into health problems. There are such possibility of the higher prevalence of cardiovascular, digestive and respiratory systems so it is necessary to evaluate or protect people living in Stepnogorsk area.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46998415","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: 3

Changes in the structure and properties of ZrO2 detonation coatings during annealing ZrO2爆轰涂层在退火过程中的结构和性能变化

Eurasian Journal of Physics and Functional Materials Pub Date : 2020-12-25 DOI: 10.29317/ejpfm.2020040405

B. Rakhadilov, D. Kakimzhanov, G. Botabaeva, D. Buitkenov, Nurgamit Kantay, L. Bayatanova

{"title":"Changes in the structure and properties of ZrO2 detonation coatings during annealing","authors":"B. Rakhadilov, D. Kakimzhanov, G. Botabaeva, D. Buitkenov, Nurgamit Kantay, L. Bayatanova","doi":"10.29317/ejpfm.2020040405","DOIUrl":"https://doi.org/10.29317/ejpfm.2020040405","url":null,"abstract":"The article studied the effect of annealing on the structure and properties of zirconium dioxide coatings obtained by detonation spraying. Detonation spraying was realized on a computerized detonation spraying complex of the new generation CCDS2000. Determined that coatings made of zirconium dioxide are characterized by high adhesive strength of adherence to the substrate. Thermal annealing of coated samples was performed at temperatures of 900-1200◦ C. It was determined that the microhardness of zirconium dioxide coatings increases by 10-25% depending on the annealing temperature after annealing. The results of nanoindentation showed that the nanohardness of the coatings after annealing at 1000◦ C increases by 50%. It was determined that after annealing at 1000◦ C, the elastic modulus of the coatings increases, which indicates a decrease in plasticity and an increase in the strength of the coatings. X-ray diffraction analysis showed that the phase composition of coatings before and after annealing consists of t-ZrO2. After annealing occurs there is an increase in the degree of t-ZrO2 tetragonality. Electron microscopic analysis showed that an increase in the number and size of micro-continuity in the form of thin layers after annealing. Determined that increase the hardness of zirconium dioxide after annealing at 900-1200◦ C is associated with a higher degree of tetragonality t-ZrO2 phase.","PeriodicalId":36047,"journal":{"name":"Eurasian Journal of Physics and Functional Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44391712","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

Investigation of the applicability of post-irradiation annealing to reduce the degree of disorder in AlN ceramic to proton irradiation 辐照后退火降低AlN陶瓷无序度对质子辐照的适用性研究

Eurasian Journal of Physics and Functional Materials Pub Date : 2020-12-25 DOI: 10.29317/ejpfm.2020040403

A. Kozlovskiy

引用次数: 0