Evaluation of high viscosity of solidified lubricants at high pressure by Rayleigh light scattering and photon correlation technique

被引：2
作者：
Nakamura, Y
Tsunoda, M
Matsui, T
Fujishiro, I
机构：
[1] Mie Univ, Fac Engn, Tsu, Mie 5148507, Japan
[2] Mie Univ, Grad Sch, Tsu, Mie 5148507, Japan
来源：
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING | 2001年 / 44卷 / 01期
关键词：
tribology; lubrication; viscosity; spectroscopic measurement; laser; high pressure; photon correlation;
D O I：
10.1299/jsmec.44.237
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new viscosity measuring system was designed and set up employing Rayleigh light scattering and the photon correlation technique in which a high-pressure diamond-anvil cell (DAC) was used. Two kinds of experiments were conducted. One was the measurement of a dilute suspension of polystyrene latex spheres in liquid lubricant and W/O emulsion. Correlation functions induced by the Brownian motion of fine spheres in the lubricant were observed and the viscosities were obtained, the measurement time of which was one-tenth shorter than that of the falling-body method. The other experiment was the measurement of 5P4E (polyphenyl ether) and DOP (dioctylphthalate) without mixing polystyrene spheres. Very weak but observable correlation functions related to structural relaxation were observed and the viscosities of solidified lubricants (about 10(9) Pa.s), obtained in a very short time by introducing a shift factor for relaxation time, were consistent with those extrapolated from data obtained using the falling-body method.
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页码：237 / 243
页数：7
相关论文
共 16 条
  • [1] *ASME, 1953, PRESS VISC REP, V2, P198
  • [2] The effect of pressure on the viscosity of forty-four pure liquids.
    Bridgman, PW
    [J]. PROCEEDINGS OF THE AMERICAN ACADEMY OF ARTS AND SCIENCES, 1926, 61 (3/12): : 57 - 99
  • [3] Chu B., 1991, LASER LIGHT SCATTERI, P13
  • [4] DILL JF, 1975, ASLE TRANS, V18, P202
  • [5] FUJISHIRO I, 1986, B JSME, V29, P1280, DOI 10.1299/jsme1958.29.1280
  • [6] HARRISON G, 1976, DYNAMIC PROPERTIES S, P141
  • [7] Johnson K.L., 1978, P 5 LEEDS LYON S TRI, P155
  • [8] Masuko M, 1997, J JPN SOC TRIBOLOGIS, V42, P286
  • [9] NAKAMURA Y, 1998, T JPN SOC MECH ENG-C, V64, P2647
  • [10] NAKAMURA Y, 1998, P IMMM97, P505
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