Abrasive wear behavior of MoSi{sub 2}/SiC and MoSi{sub 2}/ZrO{sub 2} composites

Journal Article · Thu Jun 01 00:00:00 EDT 1995 · Scripta Metallurgica et Materialia

DOI:https://doi.org/10.1016/0956-716X(95)00002-D· OSTI ID:69672

Alman, D E; Hawk, J A ^[1]; Petrovic, J J ^[2]

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1. Bureau of Mines, Albany, OR (United States). Albany Research Center
2. Los Alamos National Lab., NM (United States)

The volume wear behavior of MoSi{sub 2}/SiC and MoSi{sub 2}/ZrO{sub 2} composites was evaluated using 150 grit SiC particles in a pin-on-drum abrasion test. The addition of SiC whiskers or particles reduced the volume wear of the composite relative to monolithic MoSi{sub 2} by about a factor of two, with the SiC whisker containing composite having a slightly lower volume wear rate than the SiC particulate reinforced composite. The addition of partially-stabilized (PS)-ZrO{sub 2} particles lowered the volume wear of the composite relative to MoSi{sub 2}. The addition of unstabilized (US)-ZrO{sub 2} or fully-stabilized (FS)-ZrO{sub 2} particles to the MoSi{sub 2} matrix had little effect of the volume wear relative to the unreinforced matrix. The difference in wear behavior of the ZrO{sub 2} reinforced composites may be associated with the ability of the PS-ZrO{sub 2} particles to transform reducing the fragmentation process during abrasion.

• OSTI ID: 69672
• Journal Information: Scripta Metallurgica et Materialia, Vol. 32, Issue 11; Other Information: PBD: 1 Jun 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
WEAR
MOLYBDENUM SILICIDES
SILICON CARBIDES
ZIRCONIUM OXIDES
YTTRIUM OXIDES
SAMPLE PREPARATION
POWDER METALLURGY
PARTICULATES
WHISKERS
MICROSTRUCTURE
PARTICLE SIZE
HARDNESS
FRACTURE PROPERTIES