graphite
Enable an AI agent to recognise graphite, assess its material condition and suitability, and decide which handling, processing or use actions are justified by available evidence.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 18 findings · 28 questions
Graphite identity Establishes what evidence supports calling the material graphite and where neighbouring carbon classifications begin.
Structural identification
Records observations used to identify graphitic structure and their limitations.
Graphite phase evidence
Captures the evidence supporting graphite identification and any unresolved competing interpretations.
- Which diffraction, spectroscopy or microscopy observations support graphite identification, and which specimen was examined? measurement
- Could the observations also describe poorly ordered carbon or a mixed carbon material, and what additional evidence would resolve that ambiguity? boundary
Material boundaries
Separates graphite identity from product names, neighbouring carbon materials and graphite-containing mixtures.
Graphite versus product label
Records the actual material represented by labels such as graphene, graphite nanoplatelets or graphite grade.
- What thickness, layer-count or structural convention distinguishes this material from a separately modelled graphene product? boundary
- Does this record describe graphite itself, a coated graphite material or a mixture containing graphite and other constituents? definition
Origin and transformation Connects graphite to its natural or synthetic origin and to treatments that establish its present state.
Origin evidence
Records support for origin claims and whether the material combines multiple sources.
Natural, synthetic or mixed
Distinguishes documented origin from origin inferred from appearance or grade naming.
- What records support natural, synthetic or mixed origin, and can they be traced to this lot? provenance
- For natural material, what extraction and beneficiation history is known; for synthetic material, what precursor and graphitisation history is known? provenance
Processing history
Tracks treatments capable of changing graphite structure, particle form or surface condition.
Treatment sequence
Relates the current graphite state to purification, milling, thermal treatment, intercalation, expansion or coating.
- Which treatments were performed, in what sequence, and with what recorded reagents and thermal or mechanical conditions? provenance
- Which proposed next treatments require verification of residual reagents, coatings or previous structural changes? action
Form and internal structure Describes graphite at particle, crystallite and body scales without conflating their measurements.
Particle and flake geometry
Captures distributions of particle dimensions, shape and aggregation.
Size, thickness and aggregation
Distinguishes lateral flake size, thickness and agglomerate size in measurements of graphite particles.
- What lateral size, thickness and shape distributions were measured, using which methods and weighting conventions? measurement
- Do reported sizes represent individual graphite particles or agglomerates, and how did sample dispersion affect the result? measurement
Ordering, orientation and voids
Records internal organisation relevant to graphite powders and consolidated bodies.
Structure across scales
Separates crystallite ordering and preferred orientation from particle packing and internal porosity.
- What evidence describes graphitic ordering and preferred orientation, and how representative is it of the material? measurement
- Which density and porosity measurements distinguish spaces between particles from pores inside particles or a consolidated body? measurement
Composition and material condition Assesses graphite purity, surface modifications, contamination and changes caused by storage or service.
Purity and surface chemistry
Distinguishes bulk composition, residual mineral matter and surface-specific chemistry.
Carbon, impurities and coatings
Records what purity claims include and which constituents could control use suitability.
- How were carbon content, ash and specific impurities measured, and are results reported on dry, as-received or another basis? measurement
- Which coatings, functional groups, moisture or processing residues are present, and what evidence distinguishes surface measurements from bulk composition? measurement
Degradation and contamination
Records changes relative to an established graphite condition or acceptance baseline.
Condition change
Assesses oxidation, wear, fracture or contamination using the material's exposure history and observations.
- What changes in mass, surface chemistry, particle distribution or body integrity are observed relative to the baseline? measurement
- Given recorded atmosphere, temperature and chemical or mechanical exposure, what evidence is needed before continued use or reprocessing? action
Performance and permitted actions Connects graphite properties to a specified use and to justified handling or processing decisions.
Conditioned property evidence
Records performance measurements with the orientation and specimen conditions necessary for interpretation.
Transport and mechanical response
Captures use-relevant electrical, thermal or mechanical behaviour without treating powder and body measurements as interchangeable.
- What electrical or thermal properties were measured, along which directions and at what temperature, density and contact conditions? measurement
- Which mechanical, friction or wear measurements are relevant to this graphite form, and under what loading and environmental conditions were they obtained? measurement
Use and processing decisions
Determines whether available material evidence supports a requested application or transformation.
Qualification and next action
Links decisions to explicit graphite acceptance criteria, representative evidence and remaining uncertainty.
- For the intended use, which graphite-specific limits on impurities, particle geometry, porosity or measured performance apply, and does this lot meet them? boundary
- Which next action is supported - use, additional testing, classification, purification, consolidation, reprocessing or segregation - and what material-dependent handling constraints apply? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these kinds and varieties hold for the sense of graphite this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these identifiers and schemes hold for the sense of graphite this model covers, and on what evidence? provenance
Standards and regulation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these standards and regulation hold for the sense of graphite this model covers, and on what evidence? provenance
Real-world use
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these real-world use hold for the sense of graphite this model covers, and on what evidence? provenance
Typical measurements
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these typical measurements hold for the sense of graphite this model covers, and on what evidence? provenance
Failure modes and hazards
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these failure modes and hazards hold for the sense of graphite this model covers, and on what evidence? provenance
Regional variation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these regional variation hold for the sense of graphite this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of graphite this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- cliftonite, synthetic graphite, graphite-3R, graphite-2H, nuclear graphite, vermicular graphite
What it is Filled
Graphite is the layered crystalline allotrope of elemental carbon (dominant 2H polytype, space group P6₃/mmc, with a 3R rhombohedral stacking variant) in which sp² graphene sheets stack at about 0.335 nm by van der Waals cohesion; it is the thermodynamically stable form of carbon at ambient pressure and is extremely anisotropic in electrical, thermal and mechanical properties.
In scope
- Evidence identifying graphite and distinguishing it from other carbon materials and mixtures
- Natural or synthetic origin and processing history affecting the graphite
- Particle, flake, expanded or consolidated form and its internal structure
- Carbon content, impurities, surface chemistry and contamination
- Directional properties, degradation and suitability for a specified material use
Out of scope
- Graphite deposits, mine planning and extraction operations
- Graphene, diamond, carbon black and other separately identified carbon materials
- Complete batteries, electrodes, reactors and other graphite-containing devices
- Finished composites and formulations whose behaviour depends on multiple constituents
- Processing equipment, workplace exposure programmes and transport regulations
Why it exists Filled
Enable an AI agent to recognise graphite, assess its material condition and suitability, and decide which handling, processing or use actions are justified by available evidence.
Distinguishing features Filled
- Determine whether diffraction and complementary structural evidence support graphite identity rather than relying on black colour, softness or electrical conductivity alone.
- Check whether a material sold as graphene is a few-layer product, graphite nanoplatelets or bulk graphite; record the thickness evidence and classification convention.
- Distinguish graphite from carbon black, char and poorly ordered carbon using structural evidence alongside morphology and processing history.
- Determine whether the object is graphite material or a graphite-containing mixture by identifying binders, coatings and other phases.
- Separate confirmed graphite identity from natural-versus-synthetic origin claims, which require their own provenance or analytical evidence.
What robots and AI may and may not do Filled
Must not
- Misstate the source of mined graphite to hide forced labour or illegal mining.
- Expose workers to graphite dust without proper protection.
- Use unspecified graphite grades in nuclear or safety-critical parts.
- Misdescribe synthetic graphite as natural or the reverse.
Only with a human decision
- Approving graphite material for nuclear or other safety-critical service.
May
- Describe graphite's structure, grades and uses from technical sources.
- Report quality, purity and origin data for a graphite lot.
Moral aspects Filled
- Battery demand drives graphite mining that can harm communities and air.
- Dust exposure harms workers' lungs.
Who is affected
- Mine and plant workers
- Communities near mines
- Buyers
Owners Filled
Steward
The owner of the lot; mining authorities license extraction.
Master systems
- Mining licence registers
Links to other meta-models Filled
parent
- Q13292702 - registry parent class
- Q21073024 - registry parent class
- Q214609 - registry parent class
- Q622460 - registry parent class
- Q723127 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.graphite
- Wikidata: Q5309 (https://www.wikidata.org/wiki/Q5309)
Direct properties required Filled
- Graphite identification confidence: unverified | provisional | supported | disputed; methods and supporting observations
- Origin and production route: natural | synthetic | mixed | unknown; documented route
- Material form: flake | powder | expanded material | consolidated body | other described form
- Graphitic ordering: method-specific diffraction or spectroscopic metrics, including test conditions and uncertainty
- Particle size and shape: size distribution in µm; thickness in nm or µm; dimensionless aspect ratio; measurement basis
- Carbon and impurity composition: carbon in mass %; identified impurities in mass % or mg/kg; analytical method and reporting basis
- Surface condition: as-produced | purified | coated | functionalised | oxidised | contaminated | unknown; supporting evidence
- Density and porosity: density in kg/m³ with bulk, tapped, skeletal or apparent basis; porosity in % with method
- Directional transport properties: electrical resistivity in Ω·m; thermal conductivity in W/(m·K); direction, temperature and specimen condition
- Use qualification: link to intended use, acceptance criteria, test evidence and applicable lot or specimen
Recognition required Filled
- Graphite commonly appears steel gray to black with a metallic or earthy luster.
- It readily leaves a dark gray to black streak on a suitable unglazed surface.
- Crystalline specimens commonly show flakes or plates that separate along closely spaced layers.
- Its soft, slippery character helps distinguish it from many harder dark minerals.
Capabilities and actions required Filled
- Identify and classify a graphite specimen or lot using structural, compositional and provenance evidence.
- Select representative samples and request tests that resolve identity, purity or performance uncertainty.
- Assess whether milling, classification, purification, expansion or consolidation is appropriate for the recorded material.
- Match graphite to a specified use using measured properties and explicit acceptance criteria.
- Recommend continued use, further testing, reprocessing or segregation based on contamination and degradation evidence.
- Specify material-dependent handling constraints for loose particles, flakes or consolidated bodies.
Hazards and failure modes required Filled
- Airborne graphite dust can irritate the eyes and respiratory tract, and sustained occupational exposure can damage lungs.
- Conductive dust can bridge electrical contacts and cause equipment faults or short circuits.
- Finely divided graphite can present a combustible dust hazard under suitable conditions.
- Unrecognized impurities can make a graphite grade unsuitable for its intended chemical or thermal environment.
Standards and interfaces required Filled
- Regulation (EC) No 1907/2006, issued by the European Parliament and the Council of the European Union, provides the REACH framework for graphite supplied as a substance in the European Union, subject to applicable exemptions.
Context of use required Filled
- Graphite occurs in mineral deposits and is processed for electrodes, refractories, lubricants and battery materials.
- Its layered structure and direction-dependent conductivity make material grade, purity and orientation important when assessing a proposed use.
Sources Filled
- Mineral Commodity Summaries, Graphite chapter - Industrial kinds (flake, amorphous, vein, synthetic), producing countries, and end uses (refractories, batteries, lubricants, foundry, recarburisers).
- Wikidata item Q5309, Graphite - Stable identifiers (Wikidata, CAS, EC) and the mineral/allotrope sense of the name.
- PubChem Compound Summary for CID 5462310, Graphite - CAS 7782-42-5, EC 231-955-3, and the elemental-carbon identity of the commercial substance.
- Handbook of Mineralogy: Graphite - Crystal system, polytypes, hardness, density, and distinction from other native-carbon minerals.
- ASTM D7219, Standard Specification for Isotropic and Near-isotropic Nuclear Graphites - Nuclear-grade graphite as a separately specified industrial kind and the property suite used to qualify it.
- IEC 60239, Graphite electrodes for electric arc furnaces - Dimensions and designation - EAF graphite electrodes as a standardised commercial product form.
- OSHA 29 CFR 1910.1000, Air contaminants (Tables Z-1 and Z-3), graphite entries - Occupational exposure limits that treat natural and synthetic graphite dust as distinct regulated forms.
- Wikipedia: Graphite - general description of the item
Open questions
- Which existing Vercy world models or registry entries already own graphite, graphene, expanded graphite or graphite-containing composites, and where should this model link rather than duplicate them?
- Which authoritative identification methods and classification conventions should govern boundaries between graphite, poorly ordered carbon and few-layer products?
- Should intercalated, oxidised and expanded forms remain states of this graphite model or be related to separately registered materials?
- Which sampling and measurement methods provide comparable graphite results across loose powders, flakes and consolidated bodies?
- Which application-specific qualification requirements belong in reusable graphite extensions, particularly for battery, refractory and nuclear uses?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q5309/spec.json