{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:QIQFBMVTJKWCLYY2P4VOK3FHP4","short_pith_number":"pith:QIQFBMVT","canonical_record":{"source":{"id":"1208.5662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-28T13:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"865800c1b358ab31d46f40e29aaf21f7f0b8c0d4b255008fef764fb550778fbe","abstract_canon_sha256":"0cc6786c39ef2f2ee6be62b2fcaf062ce558ea24cf23d73cf60fdb9b92e9d8b5"},"schema_version":"1.0"},"canonical_sha256":"822050b2b34aac25e31a7f2ae56ca77f0e956b6193b49692719c88c497f324dd","source":{"kind":"arxiv","id":"1208.5662","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5662","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5662v1","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5662","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"QIQFBMVTJKWC","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QIQFBMVTJKWCLYY2","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QIQFBMVT","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:QIQFBMVTJKWCLYY2P4VOK3FHP4","target":"record","payload":{"canonical_record":{"source":{"id":"1208.5662","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-28T13:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"865800c1b358ab31d46f40e29aaf21f7f0b8c0d4b255008fef764fb550778fbe","abstract_canon_sha256":"0cc6786c39ef2f2ee6be62b2fcaf062ce558ea24cf23d73cf60fdb9b92e9d8b5"},"schema_version":"1.0"},"canonical_sha256":"822050b2b34aac25e31a7f2ae56ca77f0e956b6193b49692719c88c497f324dd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:32.759918Z","signature_b64":"ZBxrMiI5Hx09nmX0kCz/PzUyXzn/byWPwaVuMVD5C4ocKSFkkeIjGN+Xo6jEKd2SZh6ccjCEskrhEms0wbJLBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"822050b2b34aac25e31a7f2ae56ca77f0e956b6193b49692719c88c497f324dd","last_reissued_at":"2026-05-18T03:38:32.759488Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:32.759488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.5662","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gwQV1+zHN4flJa9qq7XXniKBhnboMLq8M97sqokYnneerlfV/bnX1tt17ve6cK85wUyXx7xZ+5/hkgiDe39zDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:20:04.026752Z"},"content_sha256":"270fa4fefa1a2bf63963e79d6eccc283d014e23cf81084fe4edd59e0bb21f4e7","schema_version":"1.0","event_id":"sha256:270fa4fefa1a2bf63963e79d6eccc283d014e23cf81084fe4edd59e0bb21f4e7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:QIQFBMVTJKWCLYY2P4VOK3FHP4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nanosized precipitates in H13 tool steel low temperature plasma nitriding","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. M. Lepienski, F. Alvarez, H. Pinto, J. Bettini, L. F. Zagonel, P. Paredez, R. L. O. Basso","submitted_at":"2012-08-28T13:40:22Z","abstract_excerpt":"A comprehensive study of pulsed nitriding in AISI H13 tool steel at low temperature (400{\\deg}C) is reported for several durations. X-ray diffraction results reveal that a nitrogen enriched compound (Epsilon-Fe2-3N, iron nitride) builds up on the surface within the first process hour despite the low process temperature. Beneath the surface, X-ray Wavelength Dispersive Spectroscopy (WDS) in a Scanning Electron Microscope (SEM) indicates relatively higher nitrogen concentrations (up to 12 at.%) within the diffusion layer while microscopic nitrides are not formed and existing carbides are not dis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5662","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mQFT2DDaDT7oQw4rb05JVqdC60XB5aGa6m7eUab2EZzvFB9fEONlHAmPNfKhlO8qf8Oi8EiGBSMZ7oJDEOvWDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T17:20:04.027591Z"},"content_sha256":"e1a9ef6f95957fa18280941bd3bdb57b367ec92b9674736a7fa0e909bf49deae","schema_version":"1.0","event_id":"sha256:e1a9ef6f95957fa18280941bd3bdb57b367ec92b9674736a7fa0e909bf49deae"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4/bundle.json","state_url":"https://pith.science/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T17:20:04Z","links":{"resolver":"https://pith.science/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4","bundle":"https://pith.science/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4/bundle.json","state":"https://pith.science/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QIQFBMVTJKWCLYY2P4VOK3FHP4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:QIQFBMVTJKWCLYY2P4VOK3FHP4","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0cc6786c39ef2f2ee6be62b2fcaf062ce558ea24cf23d73cf60fdb9b92e9d8b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-28T13:40:22Z","title_canon_sha256":"865800c1b358ab31d46f40e29aaf21f7f0b8c0d4b255008fef764fb550778fbe"},"schema_version":"1.0","source":{"id":"1208.5662","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5662","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5662v1","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5662","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"QIQFBMVTJKWC","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QIQFBMVTJKWCLYY2","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QIQFBMVT","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:e1a9ef6f95957fa18280941bd3bdb57b367ec92b9674736a7fa0e909bf49deae","target":"graph","created_at":"2026-05-18T03:38:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"A comprehensive study of pulsed nitriding in AISI H13 tool steel at low temperature (400{\\deg}C) is reported for several durations. X-ray diffraction results reveal that a nitrogen enriched compound (Epsilon-Fe2-3N, iron nitride) builds up on the surface within the first process hour despite the low process temperature. Beneath the surface, X-ray Wavelength Dispersive Spectroscopy (WDS) in a Scanning Electron Microscope (SEM) indicates relatively higher nitrogen concentrations (up to 12 at.%) within the diffusion layer while microscopic nitrides are not formed and existing carbides are not dis","authors_text":"C. M. Lepienski, F. Alvarez, H. Pinto, J. Bettini, L. F. Zagonel, P. Paredez, R. L. O. Basso","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-28T13:40:22Z","title":"Nanosized precipitates in H13 tool steel low temperature plasma nitriding"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5662","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:270fa4fefa1a2bf63963e79d6eccc283d014e23cf81084fe4edd59e0bb21f4e7","target":"record","created_at":"2026-05-18T03:38:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0cc6786c39ef2f2ee6be62b2fcaf062ce558ea24cf23d73cf60fdb9b92e9d8b5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-08-28T13:40:22Z","title_canon_sha256":"865800c1b358ab31d46f40e29aaf21f7f0b8c0d4b255008fef764fb550778fbe"},"schema_version":"1.0","source":{"id":"1208.5662","kind":"arxiv","version":1}},"canonical_sha256":"822050b2b34aac25e31a7f2ae56ca77f0e956b6193b49692719c88c497f324dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"822050b2b34aac25e31a7f2ae56ca77f0e956b6193b49692719c88c497f324dd","first_computed_at":"2026-05-18T03:38:32.759488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:38:32.759488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZBxrMiI5Hx09nmX0kCz/PzUyXzn/byWPwaVuMVD5C4ocKSFkkeIjGN+Xo6jEKd2SZh6ccjCEskrhEms0wbJLBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:38:32.759918Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5662","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:270fa4fefa1a2bf63963e79d6eccc283d014e23cf81084fe4edd59e0bb21f4e7","sha256:e1a9ef6f95957fa18280941bd3bdb57b367ec92b9674736a7fa0e909bf49deae"],"state_sha256":"cf63c7e4fe0c1210df21b885edc1be70872838c0cfd8eef862d05ad0bfb963b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U2zXLkQwVH1uWczIhEOlJa0yjrbn6CiN5qPocP+rPfDO384MsZXVW0nu34V/UlkunqyUHDOrRxSxZVbWUanqBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T17:20:04.032074Z","bundle_sha256":"6a861fecf5021fb8f053c8126a9ba33d22d0b07b466e90f320defedc265fbad7"}}