CeB4

ceramic

· CeB4

Cerium tetraboride (CeB₄) is a rare-earth ceramic compound combining cerium with boron in a refractory ceramic matrix. This material is primarily of research and specialized industrial interest, valued for its potential as a thermionic emitter and cathode material in high-temperature electron sources, as well as for refractory applications in extreme thermal environments.

thermionic cathodeselectron gun componentshigh-temperature refractoriesvacuum electronicsmaterials research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	5.806	kg/m³	—

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Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	19.40	µV/K	—

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Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.5545	eV/atom	—
↳	-0.6295	eV/atom	—

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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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.

CeB4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental