{"title":"基于DLS法测量颗粒分布的铁磁流体磁化曲线的确定","authors":"Y. Tarasevych, M. Szczęch","doi":"10.5604/01.3001.0016.2935","DOIUrl":null,"url":null,"abstract":"Ferrofluid is a colloid with particles of about 10nm that show magnetic properties. These fluids are used in avariety of applications. Their application is affected by the type of carrier base liquid, the magnetic propertiesof the particle's material, and their size and shape. In practical applications, the magnetisation curve andthe initial magnetic susceptibility are the most important characteristics of any ferrofluid. There are manymethods for determining magnetic characteristics, e.g., using magnetometers. The magnetisation curve canalso be determined on the particle distribution obtained using a transmission electron microscope (TEM).However, the cost of these devices and tests is relatively high. This paper describes a method for determiningthe magnetisation curve based on particle size measurements using the dynamic light scattering (DLS)method. Also, it is necessary to know the saturation magnetisation of the ferrofluid. The obtained magneticcharacteristics were compared with magnetisation curves described in other publications. The purpose ofthis paper is to present the method and determine the influence of various particle distribution parameterson ferrofluid characteristics. The advantage of the method is that a small volume of ferrofluid is requiredin measurements using the DLS method. The measurement can be performed quickly, and the result can beused to estimate the magnetic properties of ferrofluids quickly. These characteristics can be used in analyses(mathematical or numerical calculations) of different devices such as magnetic seals, magnetic couplings,magnetic dampers, etc.","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"29 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"DETERMINATION OF FERROFLUID MAGNETISATION CURVEBASED ON THE MEASUREMENT OF PARTICLE DISTRIBUTIONOBTAINED BY THE DLS METHOD\",\"authors\":\"Y. Tarasevych, M. Szczęch\",\"doi\":\"10.5604/01.3001.0016.2935\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ferrofluid is a colloid with particles of about 10nm that show magnetic properties. These fluids are used in avariety of applications. Their application is affected by the type of carrier base liquid, the magnetic propertiesof the particle's material, and their size and shape. In practical applications, the magnetisation curve andthe initial magnetic susceptibility are the most important characteristics of any ferrofluid. There are manymethods for determining magnetic characteristics, e.g., using magnetometers. The magnetisation curve canalso be determined on the particle distribution obtained using a transmission electron microscope (TEM).However, the cost of these devices and tests is relatively high. This paper describes a method for determiningthe magnetisation curve based on particle size measurements using the dynamic light scattering (DLS)method. Also, it is necessary to know the saturation magnetisation of the ferrofluid. The obtained magneticcharacteristics were compared with magnetisation curves described in other publications. The purpose ofthis paper is to present the method and determine the influence of various particle distribution parameterson ferrofluid characteristics. The advantage of the method is that a small volume of ferrofluid is requiredin measurements using the DLS method. The measurement can be performed quickly, and the result can beused to estimate the magnetic properties of ferrofluids quickly. These characteristics can be used in analyses(mathematical or numerical calculations) of different devices such as magnetic seals, magnetic couplings,magnetic dampers, etc.\",\"PeriodicalId\":35004,\"journal\":{\"name\":\"Tribologia: Finnish Journal of Tribology\",\"volume\":\"29 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-03-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Tribologia: Finnish Journal of Tribology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5604/01.3001.0016.2935\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tribologia: Finnish Journal of Tribology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5604/01.3001.0016.2935","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
DETERMINATION OF FERROFLUID MAGNETISATION CURVEBASED ON THE MEASUREMENT OF PARTICLE DISTRIBUTIONOBTAINED BY THE DLS METHOD
Ferrofluid is a colloid with particles of about 10nm that show magnetic properties. These fluids are used in avariety of applications. Their application is affected by the type of carrier base liquid, the magnetic propertiesof the particle's material, and their size and shape. In practical applications, the magnetisation curve andthe initial magnetic susceptibility are the most important characteristics of any ferrofluid. There are manymethods for determining magnetic characteristics, e.g., using magnetometers. The magnetisation curve canalso be determined on the particle distribution obtained using a transmission electron microscope (TEM).However, the cost of these devices and tests is relatively high. This paper describes a method for determiningthe magnetisation curve based on particle size measurements using the dynamic light scattering (DLS)method. Also, it is necessary to know the saturation magnetisation of the ferrofluid. The obtained magneticcharacteristics were compared with magnetisation curves described in other publications. The purpose ofthis paper is to present the method and determine the influence of various particle distribution parameterson ferrofluid characteristics. The advantage of the method is that a small volume of ferrofluid is requiredin measurements using the DLS method. The measurement can be performed quickly, and the result can beused to estimate the magnetic properties of ferrofluids quickly. These characteristics can be used in analyses(mathematical or numerical calculations) of different devices such as magnetic seals, magnetic couplings,magnetic dampers, etc.