K2Al2B2O7 — Properties & Data | MatWorld

K2Al2B2O7

Name: K2Al2B2O7
Brand: MatWorld

ceramic

· K2Al2B2O7

K2Al2B2O7 is a potassium aluminum borate ceramic compound belonging to the borate ceramic family, which combines the thermal and chemical stability of borates with aluminate phases. While primarily encountered in materials research and specialized applications, this compound is of interest in glass and ceramic formulations, refractories, and high-temperature applications where borate ceramics provide thermal shock resistance and low thermal expansion. Its value lies in the borate family's ability to lower melting temperatures and improve sintering characteristics compared to conventional alumina ceramics, making it potentially useful for cost-effective high-temperature composite systems.

refractory materialshigh-temperature ceramicsglass-ceramic systemsborate composite reinforcementthermal barrier coatingsmaterials research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.459	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	6.890	eV	Measured
↳	4.842	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.524	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000917	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000868	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-116.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	486.4	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.828	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.

K2Al2B2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental