Magnetic fluids in sealing and lubrication: A state of the art review

Matti Säynätjoki, Kenneth Holmberg

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)

    Abstract

    The paper is a review of the properties and functions of magnetic fluids and their potential use in tribological applications, such as seals and bearings. They offer new possibilities for achieving low friction, low wear, and no leak‐ age.

    Magnetic fluids or ferrofluids consist of magnetic particles suspended in a carrier fluid and a coating on the particles. The coating prevents the agglomeration of the particles through magnetic and molecular attraction by keeping the distance between them sufficiently large. The magnetic fluids have the basic properties of liquids and they act like ferromagnetic materials in the presence of an external magnetic field.

    Shaft sealing is the most promising potential application for ferrofluids. Magnetic seals have zero‐leakage and low friction, they are non‐stick and they have high‐performance properties. Lubrication is another important application of ferrofluids. The advantage over conventional lubricants is the possibility of keeping the lubricant exactly and only where it is needed. They provide the possibility of increasing the life of components. Furthermore, because they do not contaminate, ferrofluids are also used as lubricants in clean environments.

    Original languageEnglish
    Pages (from-to)119 - 132
    Number of pages14
    JournalLubrication Science
    Volume10
    Issue number2
    DOIs
    Publication statusPublished - 1993
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Magnetic fluids
    Lubrication
    Lubricants
    Seals
    Bearings (structural)
    Friction
    Coatings
    Ferromagnetic materials
    Agglomeration
    Wear of materials
    Magnetic fields
    Fluids
    Liquids

    Cite this

    Säynätjoki, Matti ; Holmberg, Kenneth. / Magnetic fluids in sealing and lubrication : A state of the art review. In: Lubrication Science. 1993 ; Vol. 10, No. 2. pp. 119 - 132.
    @article{060d10787fac4cf1a0109e6bbd249d72,
    title = "Magnetic fluids in sealing and lubrication: A state of the art review",
    abstract = "The paper is a review of the properties and functions of magnetic fluids and their potential use in tribological applications, such as seals and bearings. They offer new possibilities for achieving low friction, low wear, and no leak‐ age. Magnetic fluids or ferrofluids consist of magnetic particles suspended in a carrier fluid and a coating on the particles. The coating prevents the agglomeration of the particles through magnetic and molecular attraction by keeping the distance between them sufficiently large. The magnetic fluids have the basic properties of liquids and they act like ferromagnetic materials in the presence of an external magnetic field. Shaft sealing is the most promising potential application for ferrofluids. Magnetic seals have zero‐leakage and low friction, they are non‐stick and they have high‐performance properties. Lubrication is another important application of ferrofluids. The advantage over conventional lubricants is the possibility of keeping the lubricant exactly and only where it is needed. They provide the possibility of increasing the life of components. Furthermore, because they do not contaminate, ferrofluids are also used as lubricants in clean environments.",
    author = "Matti S{\"a}yn{\"a}tjoki and Kenneth Holmberg",
    note = "Project code: KOT20411",
    year = "1993",
    doi = "10.1002/jsl.3000100203",
    language = "English",
    volume = "10",
    pages = "119 -- 132",
    journal = "Lubrication Science",
    issn = "0954-0075",
    publisher = "Wiley-Blackwell",
    number = "2",

    }

    Magnetic fluids in sealing and lubrication : A state of the art review. / Säynätjoki, Matti; Holmberg, Kenneth.

    In: Lubrication Science, Vol. 10, No. 2, 1993, p. 119 - 132.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Magnetic fluids in sealing and lubrication

    T2 - A state of the art review

    AU - Säynätjoki, Matti

    AU - Holmberg, Kenneth

    N1 - Project code: KOT20411

    PY - 1993

    Y1 - 1993

    N2 - The paper is a review of the properties and functions of magnetic fluids and their potential use in tribological applications, such as seals and bearings. They offer new possibilities for achieving low friction, low wear, and no leak‐ age. Magnetic fluids or ferrofluids consist of magnetic particles suspended in a carrier fluid and a coating on the particles. The coating prevents the agglomeration of the particles through magnetic and molecular attraction by keeping the distance between them sufficiently large. The magnetic fluids have the basic properties of liquids and they act like ferromagnetic materials in the presence of an external magnetic field. Shaft sealing is the most promising potential application for ferrofluids. Magnetic seals have zero‐leakage and low friction, they are non‐stick and they have high‐performance properties. Lubrication is another important application of ferrofluids. The advantage over conventional lubricants is the possibility of keeping the lubricant exactly and only where it is needed. They provide the possibility of increasing the life of components. Furthermore, because they do not contaminate, ferrofluids are also used as lubricants in clean environments.

    AB - The paper is a review of the properties and functions of magnetic fluids and their potential use in tribological applications, such as seals and bearings. They offer new possibilities for achieving low friction, low wear, and no leak‐ age. Magnetic fluids or ferrofluids consist of magnetic particles suspended in a carrier fluid and a coating on the particles. The coating prevents the agglomeration of the particles through magnetic and molecular attraction by keeping the distance between them sufficiently large. The magnetic fluids have the basic properties of liquids and they act like ferromagnetic materials in the presence of an external magnetic field. Shaft sealing is the most promising potential application for ferrofluids. Magnetic seals have zero‐leakage and low friction, they are non‐stick and they have high‐performance properties. Lubrication is another important application of ferrofluids. The advantage over conventional lubricants is the possibility of keeping the lubricant exactly and only where it is needed. They provide the possibility of increasing the life of components. Furthermore, because they do not contaminate, ferrofluids are also used as lubricants in clean environments.

    U2 - 10.1002/jsl.3000100203

    DO - 10.1002/jsl.3000100203

    M3 - Article

    VL - 10

    SP - 119

    EP - 132

    JO - Lubrication Science

    JF - Lubrication Science

    SN - 0954-0075

    IS - 2

    ER -