HoSi2 — Properties & Data | MatWorld

HoSi2

Name: HoSi2
Brand: MatWorld

ceramic

· HoSi2

Holmium disilicide (HoSi₂) is an intermetallic ceramic compound belonging to the rare-earth disilicide family, characterized by a hexagonal crystal structure and metallic bonding characteristics unusual for ceramics. It is primarily of research and specialized industrial interest for high-temperature applications where thermal stability and oxidation resistance are critical, particularly in aerospace thermal protection systems, refractory coatings, and advanced composite matrices. Compared to conventional ceramics, rare-earth disilicides like HoSi₂ offer improved fracture toughness and thermal shock resistance at extreme temperatures, making them candidates for next-generation hypersonic vehicle components and furnace elements, though manufacturing and cost limit current widespread adoption.

aerospace thermal protectionhigh-temperature refractory coatingshypersonic vehicle structuresceramic matrix compositesfurnace liners and cruciblesoxidation-resistant coatings

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	12,788	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3400	-	DFT · OptB88vdW
Shear Modulus(G)	5,021.2	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2291	lb/in³	DFT · OptB88vdW

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Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

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Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.1017	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.4662	eV/atom	DFT · OptB88vdW
↳	-0.6022	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

HoSi2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental