Heat resistance of silicide coatings on molybdenum and molybdenum-based alloys

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Inorganic Materials

OSTI ID:35528

Kasatkin, A V; Matveenko, I V ^[1]

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1. Institute of Physical Chemistry, Moscow (Russian Federation)

The melting temperature of Mo{sub 5}Si{sub 3} is higher than that of MoSi{sub 2}. Therefore, Mo{sub 5}Si{sub 3} is most commonly used as a protective coating for operation at temperatures up to 2100-2150{degrees}C. However, insufficient heat resistance (HR) of Mo{sub 5}Si{sub 3} requires the prior formation of a SiO{sub 2} film on its surface. This procedure is usually carried out by applying a MoSi{sub 2}-based layer followed by its oxidation at 1800-1850{degrees}C, during which diffusion growth of Mo{sub 5}Si{sub 3} takes place.

• OSTI ID: 35528
• Journal Information: Inorganic Materials, Journal Name: Inorganic Materials Journal Issue: 7 Vol. 30; ISSN INOMAF; ISSN 0020-1685
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COATINGS
HEAT RESISTANT MATERIALS
MOLYBDENUM
MOLYBDENUM BASE ALLOYS
MOLYBDENUM SILICIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 1000-4000 K