Si3Rh5 — Properties & Data | MatWorld

Si3Rh5

ceramic

· Si3Rh5

Si3Rh5 is an intermetallic ceramic compound combining silicon with rhodium, belonging to a family of refractory intermetallics that combine ceramic hardness with metallic conductivity. This material is primarily of research and development interest rather than widespread industrial production, studied for high-temperature structural applications where thermal stability and wear resistance are needed alongside electrical or thermal transport properties. The rhodium content makes Si3Rh5 a premium candidate for extreme environment applications where conventional ceramics or superalloys reach their limits, though production complexity and material cost remain barriers to broader adoption.

high-temperature structural componentsaerospace propulsion systemswear-resistant coatingsresearch and developmentrefractory applicationsmaterials for extreme environments

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	198.7	GPa	DFT
↳	198.7	GPa	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.6076	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	DFT · PBE
Poisson's Ratio(ν)	0.3309	-	DFT · PBE
Shear Modulus(G)2 entries	75.74	GPa	DFT
↳	75.74	GPa	DFT · PBE

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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	9.092	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000725	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000670	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	3.017	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	3.280	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.03360	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6582	eV/atom	DFT · OptB88vdW

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

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.

Si3Rh5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental