TaF5

ceramic

· JVASP-8294· TaF5

Tantalum pentafluoride (TaF₅) is an inorganic fluoride ceramic compound belonging to the transition metal fluoride family, notable for its high density and rigid crystal structure. While primarily encountered in research and specialty chemical applications rather than mainstream structural engineering, TaF₅ serves as a precursor for advanced tantalum-based ceramics and coatings, and is investigated for use in fluoride-based solid electrolytes and optical materials where chemical inertness and thermal stability are critical. Engineers consider this material when extreme corrosion resistance, compatibility with aggressive fluorine-containing environments, or specialized electronic/optical properties are required, though availability and processing complexity limit its use to niche applications in materials research, nuclear fuel processing, and emerging solid-state battery development.

solid-state electrolytesfluoride-based coatingscorrosion-resistant linersoptical materials researchnuclear fuel processingadvanced ceramics precursor

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	14,033.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	8,668.9	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2232	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.519	eV	DFT · OptB88vdW
↳	7.111	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	10.41	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.771	-	DFT · OptB88vdW
↳	2.257	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000204	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000516	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-322.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	485.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.3187	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.992	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.

TaF5 — Properties & Data | MatWorld

TaF5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental