NdB4 — Properties & Data | MatWorld

NdB4

Name: NdB4
Brand: MatWorld

ceramic

· NdB4

NdB4 is a ceramic compound in the rare-earth boride family, combining neodymium with boron in a specific stoichiometric ratio. This material is primarily of research and developmental interest rather than established in high-volume production, with potential applications in ultra-hard ceramics, wear-resistant coatings, and high-temperature structural applications where the combination of hardness and thermal stability is valuable. Engineers consider rare-earth borides as alternatives to conventional refractories and hard ceramics when exceptional performance under extreme conditions is required, though availability and cost typically limit adoption to specialized aerospace, grinding, and cutting-tool applications.

wear-resistant coatingsrefractory materialscutting tool insertshigh-temperature ceramicsgrinding mediaresearch/specialized applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	125.0	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	111.7	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	5.042	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000538	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000519	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-8.560	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-5.153	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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.7492	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	0.1643	eV/atom	DFT · OptB88vdW
↳	-0.5524	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.

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.

NdB4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental