YSi
ceramic· YSi
YSi is an yttrium silicide ceramic compound combining yttrium and silicon into a hard, refractory material designed for extreme-temperature and high-stress applications. This compound exhibits properties typical of silicide ceramics—high stiffness, low density, and thermal stability—making it candidates for aerospace propulsion, thermal barriers, and structural composites where conventional metals or oxides reach their limits. YSi is primarily of research and advanced engineering interest rather than a commodity material, with development ongoing to overcome brittleness and enable broader commercial adoption in next-generation engines and hypersonic vehicles.
aerospace engine componentshigh-temperature structural ceramicsthermal barrier coatingsrefractory applicationsceramic matrix compositesadvanced propulsion systems
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 12,969 | ksi | — | ||
| ↳ | 12,969 | ksi | — | ||
| ↳ | 8,096 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.4547 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2068 | - | — | ||
| ↳ | 0.2100 | - | — | ||
Shear Modulus(G)3 entries | 9,450.7 | ksi | — | ||
| ↳ | 9,450.7 | ksi | — | ||
| ↳ | 1,185 | ksi | — |
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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.1230 | lb/in³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -3.413 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.7201 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.8364 | eV/atom | — | ||
| ↳ | -0.1313 | 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.
Verified Unverified Low confidence (<80%) Link to source
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.