A comparative study of the abrasive wear behavior of MoSi[sub 2]

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(95)91593-E· OSTI ID:6607178

Hawk, J A; Alman, D E ^[1]

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1. Bureau of Mines, Albany, OR (United States). Albany Research Center

This study is a preliminary assessment of the abrasive wear behavior of monolithic MoSi[sub 2]. Comparisons with the wear behavior of other advanced materials, such as refractory metals, intermetallic compounds (i.e., TiAl, Fe[sub 3]Al), and ceramics (i.e., Si[sub 3]N[sub 4], ZrO[sub 2], and Al[sub 2]O[sub 3]), are made. In general, the wear behavior of MoSi[sub 2] is similar to oxide ceramics, due in large part to the high relative hardness of the compound. However, as with most brittle materials, as the hardness of the abrasive increases relative to the hardness of the wearing material (i.e., MoSi[sub 2] abraded on garnet at 13 GPa versus abrasion on SiC at 24 GPa), volume wear increases; and the dominant wear mechanism changes, from one of primarily edge fracture to one combining micro-cutting with significant micro-fracture and grain pull-out.

• OSTI ID: 6607178
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 32:5; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALLOYS
BRITTLENESS
FABRICATION
HARDNESS
HOT PRESSING
INTERMETALLIC COMPOUNDS
MATERIALS TESTING
MATERIALS WORKING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MICROSTRUCTURE
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
PRESSING
REFRACTORY METAL COMPOUNDS
SILICIDES
SILICON COMPOUNDS
TESTING
TRANSITION ELEMENT COMPOUNDS
WEAR RESISTANCE