{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:NF2IV57ON3O4YZY2JHQ2TANPCB","short_pith_number":"pith:NF2IV57O","schema_version":"1.0","canonical_sha256":"69748af7ee6eddcc671a49e1a981af10763d966c1343fd32dfa27b1e8d153fa3","source":{"kind":"arxiv","id":"1907.12341","version":1},"attestation_state":"computed","paper":{"title":"Mechanical Characterisation of the Protective Al$_2$O$_3$ Scale in Cr$_2$AlC MAX phases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"J. Gonzalez-Julian, J. S.K.-L. Gibson, R. Va{\\ss}en, S. Korte-Kerzel, S. Krishnan","submitted_at":"2019-07-29T11:34:51Z","abstract_excerpt":"MAX phases have great potential under demands of both high-temperature and high-stress performance, with their mixed atomic bonding producing the temperature and oxidation resistance of ceramics with the mechanical resilience of metals. Here, we measure the mechanical properties up to 980C by nanoindentation on highly dense and pure Cr$_2$AlC, as well as after oxidation with a burner rig at 1200C for more than 29 hours. Only modest reductions in both hardness and modulus up to 980C were observed, implying no change in deformation mechanism. Furthermore, micro-cantilever fracture tests were car"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1907.12341","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-07-29T11:34:51Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e1fc027b9f7b55edbd8d7d2a016eb5baa86ceb9df6c752eaa67e1fac8a79213b","abstract_canon_sha256":"86e9ad48af0b85226479ceaddf545138d6a5fc93286381fffc9f06eccce2be78"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:50:07.720837Z","signature_b64":"XYK9N+Xim6UdL5+/rlgCIvLPuGkSxdiFiXOdKsTJn6xmiC45HH46WkN7dUJYStPkIM/zGw5RtDULTA3dRkfWDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"69748af7ee6eddcc671a49e1a981af10763d966c1343fd32dfa27b1e8d153fa3","last_reissued_at":"2026-07-04T23:50:07.720454Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:50:07.720454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Mechanical Characterisation of the Protective Al$_2$O$_3$ Scale in Cr$_2$AlC MAX phases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"J. Gonzalez-Julian, J. S.K.-L. Gibson, R. Va{\\ss}en, S. Korte-Kerzel, S. Krishnan","submitted_at":"2019-07-29T11:34:51Z","abstract_excerpt":"MAX phases have great potential under demands of both high-temperature and high-stress performance, with their mixed atomic bonding producing the temperature and oxidation resistance of ceramics with the mechanical resilience of metals. Here, we measure the mechanical properties up to 980C by nanoindentation on highly dense and pure Cr$_2$AlC, as well as after oxidation with a burner rig at 1200C for more than 29 hours. Only modest reductions in both hardness and modulus up to 980C were observed, implying no change in deformation mechanism. Furthermore, micro-cantilever fracture tests were car"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.12341","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.12341/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1907.12341","created_at":"2026-07-04T23:50:07.720504+00:00"},{"alias_kind":"arxiv_version","alias_value":"1907.12341v1","created_at":"2026-07-04T23:50:07.720504+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.12341","created_at":"2026-07-04T23:50:07.720504+00:00"},{"alias_kind":"pith_short_12","alias_value":"NF2IV57ON3O4","created_at":"2026-07-04T23:50:07.720504+00:00"},{"alias_kind":"pith_short_16","alias_value":"NF2IV57ON3O4YZY2","created_at":"2026-07-04T23:50:07.720504+00:00"},{"alias_kind":"pith_short_8","alias_value":"NF2IV57O","created_at":"2026-07-04T23:50:07.720504+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB","json":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB.json","graph_json":"https://pith.science/api/pith-number/NF2IV57ON3O4YZY2JHQ2TANPCB/graph.json","events_json":"https://pith.science/api/pith-number/NF2IV57ON3O4YZY2JHQ2TANPCB/events.json","paper":"https://pith.science/paper/NF2IV57O"},"agent_actions":{"view_html":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB","download_json":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB.json","view_paper":"https://pith.science/paper/NF2IV57O","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1907.12341&json=true","fetch_graph":"https://pith.science/api/pith-number/NF2IV57ON3O4YZY2JHQ2TANPCB/graph.json","fetch_events":"https://pith.science/api/pith-number/NF2IV57ON3O4YZY2JHQ2TANPCB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB/action/storage_attestation","attest_author":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB/action/author_attestation","sign_citation":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB/action/citation_signature","submit_replication":"https://pith.science/pith/NF2IV57ON3O4YZY2JHQ2TANPCB/action/replication_record"}},"created_at":"2026-07-04T23:50:07.720504+00:00","updated_at":"2026-07-04T23:50:07.720504+00:00"}