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Phase 2 · Evidence-Controlled Library

Engineering Material Records

Traceable material identity, composition, process state, property claim, test basis, source provenance, evidence maturity, availability and cross-project dependencies — without turning screening literature into design allowables.

Browse Controlled Records →Open Phase 3 Dependency Map →

◇Composition controlled◎Source traceable▧Conflict aware⬡E5-only allowables

Phase 2 Batch 01 validated · Batch 02 source queue staged

Engineering Materials Library canonical visual

9controlled UHTC records

12traceable claim rows

2open conflicts preserved

10next sources queued

E0–E5evidence promotion model

Canonical Material Cards

9 controlled records

MAT-UHTC-ZRB2-001E2A0

Zirconium diboride

ZrB2
High temperature; Thermal shock screening; Structural/hot structure; Electrical conductor; Wear/tribology

Melting temperature: 3040 / 3250 / 3517 degC
CONFLICT_OPEN · Intro pp.3-4

Densification example: Nearly full density at 2200 degC
PROCESS_SPECIFIC · Historical chapter p.14

Densification limitation: <95 % relative density
PROCESS_SPECIFIC · Historical chapter p.14

MAT-UHTC-HFB2-001E2A0

Hafnium diboride

HfB2
High temperature; Structural/hot structure; Electrical conductor; Oxidation screening

Relative oxidation performance: Slightly better than corresponding Zr compound qualitative
CONTEXT_CONTROLLED · Historical chapter p.21

MAT-UHTC-TAC-001E2A0

Tantalum carbide

TaC (stoichiometry may vary)
Ultra-high temperature; Wear/tribology; Structural screening

MAT-UHTC-ZRC-001E2A0

Zirconium carbide

ZrC (stoichiometry may vary)
Ultra-high temperature; Structural screening; Phase-equilibria lineage

MAT-UHTC-HFC-001E2A0

Hafnium carbide

HfC (stoichiometry may vary)
Ultra-high temperature; Structural screening; Phase-equilibria lineage

MAT-UHTC-TIB2-001E2A0

Titanium diboride

TiB2
Hard/wear-resistant; High-temperature; Conductive ceramic

MAT-UHTC-ZRB2-SIC20-001E2A0

ZrB2 + 20 vol% SiC composite

ZrB2 + 20 vol% SiC
Oxidation resistance; Hot structure; Thermal/mechanical performance

Solidus / liquid formation: ~2300 degC
CONTEXT_CONTROLLED · Intro p.4

Historical composition selection: 20 vol% SiC
CONTEXT_CONTROLLED · Historical chapter p.15

Historical reentry survival: Met model-trajectory requirement qualitative
HISTORICAL_TEST · Historical chapter p.23

MAT-UHTC-HFB2-SIC20-001E2A0

HfB2 + 20 vol% SiC composite

HfB2 + 20 vol% SiC
Oxidation resistance; Hot structure; Thermal/mechanical performance

Oxidation behavior: Superior to HfB2 or SiC alone qualitative
CONTEXT_CONTROLLED · Historical chapter p.16

Historical reentry survival: Met model-trajectory requirement qualitative
HISTORICAL_TEST · Historical chapter p.23

MAT-UHTC-ZRB2-SIC-WC-001E2A0

ZrB2-SiC-WC composite

ZrB2 + SiC + WC; exact fractions claim-specific
High-temperature strength; Toughening; Hot structure screening

High-temperature strength retention: at least 675 MPa
TARGETED_EXTRACTION · Reactive-process chapter p.47

Fracture mode at elevated temperature: Elastic, transgranular qualitative
TARGETED_EXTRACTION · Reactive-process chapter p.47

Next Controlled Source Intake — Ten References

Source-first rule

019

Optical Metamaterials - Fundamentals and Applications - W. Cai, V. Shalaev (Springer, 2010)

Optical metamaterials · Ingestion required before numerical-property promotion.

Source gate

020

Nanostructured Superconductors

Superconductors · Ingestion required before numerical-property promotion.

Source gate

021

Nanomaterials for Solid State Hydrogen Storage - Varin, Czujko (Springer, 2009)

Hydrogen storage · Ingestion required before numerical-property promotion.

Source gate

022

Corrosion Protection and Control Using Nanomaterials - V. Saji, R. Cook (Woodhead, 2012)

Corrosion / nanomaterials · Ingestion required before numerical-property promotion.

Source gate

023

Thermal Nanosystems and Nanomaterials - S. Volz (Springer, 2009)

Thermal nanosystems · Ingestion required before numerical-property promotion.

Source gate

024

Piezoelectric Nanomaterials for Biomedical Applications - G. Ciofani, A. Menciassi (Springer, 2012)

Piezoelectric biomaterials · Ingestion required before numerical-property promotion.

Source gate

025

Porous Silicon Carbide and Gallium Nitride - Feenstra, Wood (Wiley, 2008)

Porous SiC / GaN · Ingestion required before numerical-property promotion.

Source gate

026

Carbon Nanotube-Polymer Composites - B. Grady (Wiley, 2011)

CNT polymer composites · Ingestion required before numerical-property promotion.

Source gate

027

The Nanoscience and Technology of Renewable Biomaterials - L. Lucia, O. Rojas (Wiley, 2009)

Renewable biomaterials · Ingestion required before numerical-property promotion.

Source gate

028

Mechanics of Biomaterials - Fundamental Principles for Implant Design - L. Pruitt, A. Chakravartula (Cambridge, 2011)

Implant mechanics · Ingestion required before numerical-property promotion.

Source gate

Review gate: these ten subjects are already wired into the taxonomy and Phase 3 dependency map, but detailed property claims remain deliberately gated until the source contents are actually ingested. This prevents attractive webpage mockups from becoming an uncited property database.

Property-Claim Control Matrix

Context travels with the number

Claim ID	Material	Property / Claim	Value	Context	Status
CLM-UHTC-0001	MAT-UHTC-ZRB2-001	Melting temperature	3040 / 3250 / 3517 degC	Reported values disagree across cited historical sources · N/A · Intro pp.3-4	CONFLICT_OPEN
CLM-UHTC-0002	MAT-UHTC-ZRB2-SIC20-001	Solidus / liquid formation	~2300 degC	Composite system; eutectic reaction discussed · N/A · Intro p.4	CONTEXT_CONTROLLED
CLM-UHTC-0003	MAT-UHTC-ZRB2-SIC20-001	Historical composition selection	20 vol% SiC	ManLabs study lineage · Historical program · Historical chapter p.15	CONTEXT_CONTROLLED
CLM-UHTC-0004	MAT-UHTC-HFB2-SIC20-001	Oxidation behavior	Superior to HfB2 or SiC alone qualitative	Historical HfB2-20 vol% SiC lineage · High-temperature oxidation · Historical chapter p.16	CONTEXT_CONTROLLED
CLM-UHTC-0005	MAT-UHTC-ZRB2-001	Densification example	Nearly full density at 2200 degC	B/Me ratio 1.89 · Hot pressing · Historical chapter p.14	PROCESS_SPECIFIC
CLM-UHTC-0006	MAT-UHTC-ZRB2-001	Densification limitation	<95 % relative density	B/Me ratio 1.89 at 2300 degC · Hot pressing · Historical chapter p.14	PROCESS_SPECIFIC
CLM-UHTC-0007	MAT-UHTC-ZRB2-001	Protective oxidation regime	below ~1200 degC	Nominally pure ZrB2 in cited historical program · Oxidation testing · Historical chapter p.14	CONTEXT_CONTROLLED
CLM-UHTC-0008	MAT-UHTC-HFB2-001	Relative oxidation performance	Slightly better than corresponding Zr compound qualitative	Historical furnace tests · Oxidizing environment · Historical chapter p.21	CONTEXT_CONTROLLED
CLM-UHTC-0009	MAT-UHTC-ZRB2-SIC20-001	Historical reentry survival	Met model-trajectory requirement qualitative	ManLabs program materials set · Simulated atmospheric reentry · Historical chapter p.23	HISTORICAL_TEST
CLM-UHTC-0010	MAT-UHTC-HFB2-SIC20-001	Historical reentry survival	Met model-trajectory requirement qualitative	ManLabs program materials set · Simulated atmospheric reentry · Historical chapter p.23	HISTORICAL_TEST
CLM-UHTC-0011	MAT-UHTC-ZRB2-SIC-WC-001	High-temperature strength retention	at least 675 MPa	ZrB2-SiC-WC composition/process from cited study · 1600 degC · Reactive-process chapter p.47	TARGETED_EXTRACTION
CLM-UHTC-0012	MAT-UHTC-ZRB2-SIC-WC-001	Fracture mode at elevated temperature	Elastic, transgranular qualitative	ZrB2-SiC-WC composition/process from cited study · 1600 degC · Reactive-process chapter p.47	TARGETED_EXTRACTION

Controlled boundary. Public summary values may be shown only when the underlying claim rows are compatible and the aggregation rule is documented. Safety-critical use, radiation/nuclear/medical use, and Aurora design allowables require qualification independent of screening literature.