Accession Number : AD0716972

Title :   Apparatus and Technique for Studying Friction and Wear of Materials in a Liquid Nitrogen Medium,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Zaporozhets,A. A.

Report Date : 09 OCT 1970

Pagination or Media Count : 11

Abstract : The design and operation of an apparatus, MTCH-1, for studying friction and wearing processes at low temperature is described. The ends of 2 hollow cylindrical samples outside diam. 16 x inside diam. 8 x 12 mm and outside diam. 15 x inside diam. 9 x 12 mm., resp., immersed in liq. N were rotating one against the other at a const. velocity of 0.039 m/sec under specific loadings of 0.2-1.OMN/m(superscript 2). The wearing of materials were estd. by linear measurements or by weighing. An equation to estimate the friction factor and results for some pure metals (Fe, Mo, Tl, Al) and special steel 38KhmYua are presented. (Author)

Descriptors :   (*FRICTION, LOW TEMPERATURE), TEST EQUIPMENT, CRYOGENICS, LIQUEFIED GASES, WEAR RESISTANCE, METALS, USSR

Subject Categories : Test Facilities, Equipment and Methods
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE